ROCK SPRINGS, CITY OF (WY, WY5601182)

System Snapshot

Available system-level context

This snapshot shows the identity and context fields currently available for ROCK SPRINGS, CITY OF (PWSID WY5601182). Read it with the source links and limitations below.

Last updated: July 22, 2026Data reviewed: July 22, 2026

System identity

PWSID: WY5601182
State: Wyoming
Linked communities: Rock Springs
County context: Not listed in current record
System type: Not listed in current record
Source water: Green River surface water purchased from the Joint Powers Water Board and treated at its Green River water treatment plant
Population served: Not listed in current record
Service connections: Not listed in current record
Latest reviewed report: 2025 report link found
Data updated: 2026-07-22

Read these as system-level fields from reviewed public records. Confirm provider and address-specific questions with official utility, city, state, or EPA sources.

Report-Listed Rows

All report-listed rows from the latest reviewed report

All 13 report-listed rows are shown for ROCK SPRINGS, CITY OF. A listed row is not the same thing as a current advisory or household tap result.

Report year: 2025
Rows shown: 13
Source tables represented: 7
Scope: Past reporting period

All 13 table rows from the latest reviewed report for ROCK SPRINGS, CITY OF
Substance and testing period	Reported value	Range in report	Limit or standard	Source table	Report-printed status
TurbidityTesting period: January 1st - December 31st, 2025	.123; Met Treatment Rule 100% NTULEVEL DETECTED: YOUR WATER	Not listed in this summarized entry	MCGL: N/A; MCL: TT	MICROBIOLOGICAL CONTAMINANTS (UNIT)Page 10Typical source, as printed: Soil Runoff.	VIOLATION: NO, as printed for this report period
AcrylamideTesting period: January 1st - December 31st, 2025	.000085 ppmLEVEL DETECTED: YOUR WATER	Not listed in this summarized entry	MCGL: 0; MCL: TT	SYNTHETIC ORGANIC CONTAMINANTS Including pesticides & herbicides (UNIT)Page 10Typical source, as printed: Added to water during the treatment process.	VIOLATION: NO, as printed for this report period
ChlorineTesting period: January 1st - December 31st, 2025	LOW: .07; HIGH: 1.20 ppmLOW; HIGH	.07 - 1.20	MRDGL: 4; MRDL: 4	DISINFECTANTS & DISINFECTION BYPRODUCTS (UNIT)Page 10Typical source, as printed: Water additive used to control microbes.	VIOLATION: NO, as printed for this report period
Total Organic Carbons: TOCTesting period: January 1st - December 31st, 2025	LOW: 1.6; HIGH: 4.3; ANNUAL AVG: 36.70 ppmLOW; HIGH; ANNUAL AVG	1.6 - 4.3	MCGL: N/A; MCL: TT	DISINFECTANTS & DISINFECTION BYPRODUCTS (UNIT)Page 10Typical source, as printed: Trees, grass, animals & other carbon base life forms found in and around the water source.	VIOLATION: NO, as printed for this report period
Haloacetic acids: HAA-5sTesting period: January 1st - December 31st, 2025	LOW: 1.3; HIGH: 28; HIGHEST LRAA: 22.50 ppbLOW; HIGH; HIGHEST LRAA	1.3 - 28	MCGL: N/A; MCL: 60	DISINFECTANTS & DISINFECTION BYPRODUCTS (UNIT)Page 10Typical source, as printed: Byproduct of drinking water disinfection.	VIOLATION: NO, as printed for this report period
Total Trihalomethanes: TTHMsTesting period: 2025	37.00 ppbHighest LRAA	26 - 44	MCL: 80; MCLG: N/A	Water Quality Testing Results TablePage 10Typical source, as printed: Byproduct of drinking water disinfection.	Violation: NO, as printed for this report period
FluorideTesting period: 2025	.2 ppmLevel Detected: Your Water	Not listed in this summarized entry	MCL: 4; MCLG: 4	Water Quality Testing Results TablePage 10Typical source, as printed: Erosion of natural deposits, discharge from fertilizer and aluminum factories, and/or water additive which promotes strong teeth.	Violation: NO, as printed for this report period
Gross AlphaTesting period: 1/2024*	.2 pCi/LLEVEL DETECTED: YOUR WATER	Not listed in this summarized entry	MCGL: N/A; MCL: 15	RADIOACTIVE CONTAMINANTS (UNIT)Page 10Typical source, as printed: Erosion of natural deposits.	VIOLATION: NO, as printed for this report period
Combined RadiumTesting period: 1/2024*	.70 pCi/LLEVEL DETECTED: YOUR WATER	Not listed in this summarized entry	MCGL: N/A; MCL: 5	RADIOACTIVE CONTAMINANTS (UNIT)Page 10Typical source, as printed: Erosion of natural deposits.	VIOLATION: NO, as printed for this report period
UraniumTesting period: 1/2024*	1.5 ppbLEVEL DETECTED: YOUR WATER	Not listed in this summarized entry	MCGL: N/A; MCL: 30	RADIOACTIVE CONTAMINANTS (UNIT)Page 10Typical source, as printed: Naturally present in the environment.	VIOLATION: NO, as printed for this report period
LeadTesting period: 2025Sites above action level1 out of 32	3 ppb90TH PERCENTILE	0 - 17	MCL: N/A; ACTION LEVEL: 15	LEAD & COPPER TESTED AT CUSTOMER TAPSPage 10Typical source, as printed: Corrosion of household plumbing systems and/or erosion of natural deposits.	VIOLATION: NO, as printed for this report period
CopperTesting period: 2025Sites above action level0 out of 32	.67 ppm90TH PERCENTILE	.01 - 1.2	MCL: 1.30; ACTION LEVEL: 1.30	LEAD & COPPER TESTED AT CUSTOMER TAPSPage 10Typical source, as printed: Corrosion of household plumbing systems and/or erosion of natural deposits.	VIOLATION: NO, as printed for this report period
LithiumTesting period: 2023*	LOW: 0; HIGH: 16; ANNUAL AVG: 9.625 ppbLOW; HIGH; ANNUAL AVG	0 - 16	Not listed in this summarized entry	UNREGULATED CONTAMINANTS (UNIT)Page 10Typical source, as printed: A naturally occurring metal. May be found at higher concentrations in certain parts of the country, particularly in groundwater sources in arid locations in Western U.S.	The source prints VIOLATION: NO, MCGL: GOAL as N/A, and MCL: MAX ALLOWED as N/A. These reported cells are preserved here as context rather than regulatory fields because the report identifies lithium as unregulated.

Report row

Turbidity

Range in report: Not listed in this summarized entry
LEVEL DETECTED: YOUR WATER: .123; Met Treatment Rule 100% NTU
Testing period: January 1st - December 31st, 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: TT
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Acrylamide

Range in report: Not listed in this summarized entry
LEVEL DETECTED: YOUR WATER: .000085 ppm
Testing period: January 1st - December 31st, 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: 0; MCL: TT
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Chlorine

Range in report: .07 - 1.20 ppm
LOW; HIGH: LOW: .07; HIGH: 1.20 ppm
Testing period: January 1st - December 31st, 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MRDGL: 4; MRDL: 4
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Total Organic Carbons: TOC

Range in report: 1.6 - 4.3 ppm
LOW; HIGH; ANNUAL AVG: LOW: 1.6; HIGH: 4.3; ANNUAL AVG: 36.70 ppm
Testing period: January 1st - December 31st, 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: TT
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Haloacetic acids: HAA-5s

Range in report: 1.3 - 28 ppb
LOW; HIGH; HIGHEST LRAA: LOW: 1.3; HIGH: 28; HIGHEST LRAA: 22.50 ppb
Testing period: January 1st - December 31st, 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: 60
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Total Trihalomethanes: TTHMs

Range in report: 26 - 44 ppb
Highest LRAA: 37.00 ppb
Testing period: 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCL: 80; MCLG: N/A
Report-printed status: Violation: NO, as printed for this report period

Report row

Fluoride

Range in report: Not listed in this summarized entry
Level Detected: Your Water: .2 ppm
Testing period: 2025
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCL: 4; MCLG: 4
Report-printed status: Violation: NO, as printed for this report period

Report row

Gross Alpha

Range in report: Not listed in this summarized entry
LEVEL DETECTED: YOUR WATER: .2 pCi/L
Testing period: 1/2024*
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: 15
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Combined Radium

Range in report: Not listed in this summarized entry
LEVEL DETECTED: YOUR WATER: .70 pCi/L
Testing period: 1/2024*
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: 5
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Uranium

Range in report: Not listed in this summarized entry
LEVEL DETECTED: YOUR WATER: 1.5 ppb
Testing period: 1/2024*
Sites above action level: Not applicable to this summarized entry
Limit or standard: MCGL: N/A; MCL: 30
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Lead

Range in report: 0 - 17 ppb
90TH PERCENTILE: 3 ppb
Testing period: 2025
Sites above action level: 1 out of 32
Limit or standard: MCL: N/A; ACTION LEVEL: 15
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Copper

Range in report: .01 - 1.2 ppm
90TH PERCENTILE: .67 ppm
Testing period: 2025
Sites above action level: 0 out of 32
Limit or standard: MCL: 1.30; ACTION LEVEL: 1.30
Report-printed status: VIOLATION: NO, as printed for this report period

Report row

Lithium

Range in report: 0 - 16 ppb
LOW; HIGH; ANNUAL AVG: LOW: 0; HIGH: 16; ANNUAL AVG: 9.625 ppb
Testing period: 2023*
Sites above action level: Not applicable to this summarized entry
Limit or standard: Not listed in this summarized entry
Report-printed status: The source prints VIOLATION: NO, MCGL: GOAL as N/A, and MCL: MAX ALLOWED as N/A. These reported cells are preserved here as context rather than regulatory fields because the report identifies lithium as unregulated.

Read the 2025 table with these notes

All 13 printed rows from the 2025 reporting-period table are shown above. Values, units, ranges, dates, limits, qualifiers, blanks, printed wording, and printed status cells remain tied to the report period. They do not establish current compliance, a current advisory, safety, exposure, address-level service, or a household-tap condition.

Definitions and table footnotes

Parts per million or Milligrams per liter (ppm or mg/L): One part per million corresponds to one minute in two (2) years, or one penny in $10,000.
Parts per billion or Micrograms per liter (ppb or ug/l): One part per billion corresponds to one minute in 2,000 years, or a single penny in $10,000,000.
Picocurie (pCi/L): A picocurie is a unit of measurement used to measure the activity of radionuclide contaminants in drinking water.
Nephelometric Turbidity Unit (NTU): Nephelometric turbidity unit is a measure of the clarity of water.
Action Level (AL): The concentration of a contaminant, which, if exceeded, triggers treatment or other requirements which a water system must follow.
Treatment Technique (TT): A treatment technique is a required process intended to reduce the level of a contaminant in drinking water.
Maximum Contaminant Level (MCL): The highest level of a contaminant that is allowed in drinking water.
Maximum Contaminant Level Goal (MCLG): The level of a contaminant in drinking water below which there is no known or expected risk to health.
Maximum Residual Disinfectant Level Goal (MRDLG): The level of a drinking water disinfectant below which there is no known or expected risk to health.
Maximum Residual Disinfectant Level (MRDL): The highest level of a disinfectant allowed in drinking water.
90TH Percentile: 90% or 9/10 of test results are below the value shown.

1 Turbidity is reported as the highest single measurement and the lowest monthly percentage of samples meeting the turbidity limits specified for the filtration technology being used. (PDF page 10.)

2 In an effort to insure the safest water possible the State has required us to monitor some contaminants not required by Federal regulations. Of those contaminants only the ones listed above were found in your water. (PDF page 10.)

Source: Rock Springs Municipal Utility 2026-issued report. The PDF was reviewed as a complete 11-page document; it prints PWS ID WY 5601182C while EPA independently identifies PWSID WY5601182.

Source report notes

Source: Rock Springs Municipal Utility 2025 Annual Water Quality Report. Retrieved 2026-08-20.

Applies to: Turbidity, Acrylamide, Chlorine, Total Organic Carbons: TOC, Haloacetic acids: HAA-5s, Gross Alpha, Combined Radium, Uranium, Lead, Copper, Lithium
Printed values, units, ranges, periods, criteria, status cells, labels, footnotes, and inconsistencies remain historical annual-report evidence. They do not establish current compliance, a current notice or advisory, water safety, exposure, address-level service, service-line material, household conditions, or conditions at a particular tap.
Applies to: Total Trihalomethanes: TTHMs
The source prints a low of 26, high of 44, and highest LRAA of 37.00 ppb. Violation: NO applies only to this row and the 2025 report period; it is not a current compliance, advisory, safety, or tap-level conclusion.
Applies to: Fluoride
The source prints .2 ppm and no range. Violation: NO applies only to this row and the 2025 report period; it is not a current compliance, advisory, safety, or tap-level conclusion.

Review the linked source report for definitions, footnotes, and official wording.

Evidence-limited lookup

A dated hardness value was not found in the reviewed reports

The reviewed Rock Springs report tables for 2023 through 2025 do not print a total-hardness value with a unit, date, or sampling location. That is a source gap, not evidence that the water has no measurable hardness.

What to request

Ask the utility for total hardness as calcium carbonate (CaCO₃), the unit, sample date, sampling location, and whether the value describes source water, treated water, or distribution water.

Ask the utility for a dated hardness record →

Sources checked: 2025-period report, 2024-period report, and 2023-period report. None of the reviewed tables supplied a report-bound hardness value.

Federal monitoring

UCMR5 context is present; PFAS results are not established

The report explains UCMR5 and includes an unregulated lithium row, but the reviewed result set does not establish system-specific PFAS participation or results.

Printed lithium context

The unregulated lithium row is dated 2023 and prints low 0, high 16, and annual average 9.625 ppb. It remains report-period evidence.

Open the source report

PFAS evidence limit

No accepted system-specific PFAS participation, sampling locations, method results, or current PFAS status was recovered for WY5601182. Do not infer detection or non-detection from the program explanation or absence of a PFAS row.

Use the regulator contact path

Service-line evidence

Inventory access is described; property material is not determined

The 2025 report provides an inventory-copy and material-question contact path. The reviewed source does not publish categories, a replacement schedule, or a property-level result.

Report-period path

Use the report’s water-quality contact at 307-352-1405 or the utility at 307-352-1527.

The contact path supports retrieval; it does not establish material at an individual property.

Replacement program limit

No accepted current replacement-program scope, schedule, funding record, or completion record was found. This is an evidence gap, not a finding that no program exists.

Ask the utility for the current record →

Source: 2026-issued report, lead/service-line section. Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

Source and ownership roles

Green River source, JPWB treatment, RSMU distribution

The system record keeps source, treatment, owner/operator, and customer-distribution roles distinct.

Source

EPA classifies the system’s source category as surface water. The annual report names the Green River and Green River Lakes context.

Treatment supplier

The report says water is purchased from the Joint Powers Water Board, whose Green River plant treats the source water.

Customer system

Rock Springs Municipal Utility provides distribution and billing contacts. These roles do not prove every address served by WY5601182.

Sources: EPA identity record, 2026-issued annual report, and utility billing page. Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

Treatment process

Purchased-water treatment role

The annual report identifies the Joint Powers Water Board Green River plant as the treatment source for Rock Springs water.

Verified treatment relationship

The Green River plant treats water sourced from the Green River, then pumps treated water to Rock Springs through 30-inch and 20-inch mains. The report’s chlorine row identifies a water additive used to control microbes.

Unresolved treatment details

The reviewed sources do not establish current chlorine dosing or formulation, corrosion-control treatment, treatment targets, or intentional fluoridation. The fluoride result is a report row, not proof of a fluoridation program.

Read lead/copper context →

Sources: 2026-issued report and Water Operations page. Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

Facilities and operations

Storage, mains, distribution, and seasonal demand

Source-specific figures are presented side by side where the operations page and annual report use different line-mile counts.

Utility operations page

Storage: 8 tanks; 12,000,000 gallons total capacity
Distribution: 120+ miles of 4–30 inch lines
Connections: 6,500 connections
Demand: About 10 million gallons/day in summer; 3 million in winter

Annual report description

The annual report says the system has over 330 miles of distribution lines ranging from 4 to 30 inches. The difference from the operations page is retained as a dated, source-specific discrepancy rather than silently reconciled.

Open the operations source Open the annual report source

Construction, flushing, outage, and drought records

No accepted current capital-project register, main-replacement schedule, flushing schedule, drought stage, or address-specific outage notice was recovered. The operations and notices pages are follow-up destinations, not proof of current status.

Open the utility notices archive

Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

Service relationship

No accepted drinking-water service boundary was found

An exact EPA Version 3 query for WY5601182 returned a feature labeled Lead Service Line Inventory / Residential Area. That feature is not presented as a drinking-water service-area map.

Use an official provider path

Confirm the system with a bill, account, or Rock Springs Municipal Utility at 307-352-1527. City boundaries and inventory populations do not answer the address-level question.

Open billing/provider guidance

Retained query evidence

The exact query is preserved for follow-up with the utility or state GIS program. It is evidence-limited and does not establish connected properties or coverage.

Open the EPA query result

Checked September 18, 2026. EPA Region 8 identity records provide system identity context only.

Evidence coverage

Sanitary-survey evidence remains unresolved

No released WY5601182 sanitary-survey or capacity-development result was accepted in the reviewed source set. This is a retrieval limitation, not a compliance finding.

Request dated survey, inspection, or capacity-development records from the utility, Wyoming DEQ, or EPA Region 8. Retain the resulting record’s scope, date, and source.

Open the EPA Region 8 drinking-water contact form Open Wyoming DEQ water-quality resources

Regulatory record limits

Action and return-to-compliance history still needs retrieval

No accepted system-scoped violation, enforcement, variance, waiver, or return-to-compliance record was recovered for WY5601182 in this review.

What to request next

Request exact action IDs, effective dates, and decisions from EPA Region 8 or Wyoming DEQ. The report’s printed “NO” cells remain row- and period-specific and cannot be used to infer a complete current regulatory history.

Open the EPA Region 8 drinking-water contact form Open Wyoming DEQ water-quality resources

Customer billing

2026–2027 residential rate context

This dated rate schedule is a billing resource, not evidence about water quality or current compliance.

Minimum water/sewer: $39.31
Residential water, 0–268 cf: $21.46 minimum for 5/8–3/4 inch meters
Water, 269–670 cf: $0.05145 per cubic foot, capped at $20.68
Water over 670 cf: $0.03617 per cubic foot
Minimum sewer: $17.85; $0.06661 per cubic foot

Assistance question

The reviewed schedule does not establish an affordability program. Ask billing about current options at 307-352-1527 or [email protected].

Open the official rate schedule

Source geography

Green River basin context and assessment limits

The report describes the river’s geography and points to Wyoming DEQ assessment resources. A system-specific assessment was not recovered in this review.

Green River source context

The report describes a 730-mile river beginning at Green River Lakes near Pinedale, flowing through western Wyoming and the Upper Green River Valley before reaching the Green River treatment location. This geography does not establish a current contaminant result or the water at an individual tap.

Assessment record

The system-specific source-water assessment remains evidence-limited. The general DEQ resource path is retained as a next step, not proof that a particular assessment finding applies to this system.

Open Wyoming DEQ water-quality resources

Protection resources

The annual report gives general source-protection practices such as proper disposal of waste, fertilizer, medications, and pet waste. No system-specific protection plan was accepted.

Review the source-protection page in the report

Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

2025 reporting period

Customer-tap monitoring context

These statistics belong to the sampled group and stated period. They do not describe every home or current household-tap conditions.

Lead

90th percentile: 3 ppb
Range: 0–17 ppb
Action-level sites: 1 of 32

Copper

90th percentile: .67 ppm
Range: .01–1.2 ppm
Action-level sites: 0 of 32

Every printed “NO” is tied to the report row and period. It is not a current compliance, advisory, safety, or property-level conclusion. Source: 2026-issued report, page 10.

Historical annual reports

Earlier report tables, preserved separately

Expand each period to review every row transcribed from the reviewed archive source. Dates, units, ranges, limits, blank cells, and printed status values remain tied to that report period.

2024 reporting-period table14 rows · January 1–December 31, 2024 unless otherwise stated

The 2025-issued PDF was text-extracted and checked against its printed table. Its printed blank for Gross Beta’s detected value is retained.

2024 reporting-period table for ROCK SPRINGS, CITY OF
Reported row	Testing period	Value	Unit	Range or qualifier	Limit or standard	Printed status	Source table
Turbidity	2024	.109	NTU	Met Treatment Rule 100%	MCLG N/A; MCL TT	NO	Microbiological contaminants
Acrylamide	2024	.00009	ppm	Not printed	MCLG 0; MCL TT	NO	Synthetic organic contaminants
Chlorine	2024	LOW .11; HIGH 1.18	ppm	Low/high	MRDGL 4; MRDL 4	NO	Disinfectants and disinfection byproducts
Total Organic Carbons: TOC	2024	LOW 1.6; HIGH 4.3; ANNUAL AVG 35.35%	ppm	Actual % removed: annual average	MCLG N/A; MCL TT	NO	Disinfectants and disinfection byproducts
Haloacetic acids: HAA-5s	2024	LOW 2; HIGH 20; HIGHEST LRAA 15.25	ppm	Low/high/highest LRAA	MCLG N/A; MCL 60	NO	Disinfectants and disinfection byproducts
Total Trihalomethanes: TTHMs	2024	LOW 19; HIGH 56; HIGHEST LRAA 36.75	ppb	Low/high/highest LRAA	MCLG N/A; MCL 80	NO	Disinfectants and disinfection byproducts
Fluoride	2024	.2	ppm	Not printed	MCLG 4; MCL 4	NO	Inorganic contaminants
Gross Alpha	1/2024	.02	pCi/L	Date shown in table	MCLG N/A; MCL 15	NO	Radioactive contaminants
Gross Beta	1/2017*	Blank in source table	pCi/L	Date shown in table	MCLG N/A; MCL 50	NO	Radioactive contaminants
Combined Radium	1/2024	.70	pCi/L	Date shown in table	MCLG N/A; MCL 5	NO	Radioactive contaminants
Uranium	1/2024	1.5	ppb	Date shown in table	MCLG N/A; MCL 30	NO	Radioactive contaminants
Lead	2022*	90th percentile 3	ppb	0–41; 4th highest value	MCL N/A; action level 15; 1 of 30 above AL	NO	Lead and copper tested at customer taps
Copper	2022*	90th percentile .72	ppm	.08–.79; 4th highest value	MCL 1.30; action level 1.30; 0 of 30 above AL	NO	Lead and copper tested at customer taps
Lithium	2023*	LOW 0; HIGH 16; ANNUAL AVG 9.625	ppb	Low/high/annual average	MCLG N/A; MCL N/A	NO	Unregulated contaminants

Source: 2024-period official report. These entries describe that report period, not current conditions or a household tap result.

2023 reporting-period table16 rows · January 1–December 31, 2023

The 2024-issued PDF is image-only. The table on page 5 was visually reviewed; values, dates, qualifiers, and printed blanks are transcribed without reconciliation.

2023 reporting-period table for ROCK SPRINGS, CITY OF
Reported row	Testing period	Value	Unit	Range or qualifier	Limit or standard	Printed status	Source table
Turbidity	2023	.203	NTU	Met Treatment Rule	MCLG N/A; MCL TT	NO	Test results
Nitrate as N	2023	.14	ppm	Not printed	MCLG 10; MCL 10	NO	Test results
Acrylamide	2023	.00009	ppm	Not printed	MCLG 0; MCL TT	NO	Test results
Fluoride	2023	.2	ppm	Not printed	MCLG 4; MCL 4	NO	Test results
Total Organic Carbons: TOC	2023	HIGH 4.7; LOW 1.5; ANNUAL AVG 68.08%	ppm	Actual % removed: annual average	MCLG N/A; MCL N/A	NO	Test results
Haloacetic acids: HAA-5s	2023	18.5	ppb	Annual average	MCLG N/A; MCL 60	NO	Test results
Total Trihalomethanes: TTHMs	2023	34.50	ppb	Annual average	MCLG N/A; MCL 80	NO	Test results
Lead	June–August 2022	90th percentile 3	ppb	4th highest value; range not printed	MCLG N/A; action level 15	NO	Test results
Copper	June–August 2022	90th percentile .72	ppm	4th highest value; range not printed	MCL 1.3; action level 1.30	NO	Test results
Bromate	2023	ND	ppm	Not printed	MCLG 0; MCL 10	NO	Test results
Chlorine	2023	HIGH 1.60; LOW .09	ppm	High/low	MCLG 4; MCL 4	NO	Test results
Gross Alpha	1/11/2023	.02	pCi/L	Date shown in table	MCLG N/A; MCL 15	NO	Test results
Gross Beta	1/2017	.7	pCi/L	Date shown in table	MCLG N/A; MCL 50	NO	Test results
Radium 228	1/11/2023	.04	pCi/L	Date shown in table	MCLG N/A; MCL 5	NO	Test results
Uranium	1/11/2023	.0015	ppb	Date shown in table	MCLG N/A; MCL 30	NO	Test results
Lithium	2023	HIGH 16; LOW 0; ANNUAL AVG 9.625	ppb	High/low/annual average	MCLG N/A; MCL N/A	NO	Test results

Source: 2023-period official report. These entries describe that report period, not current conditions or a household tap result.

Latest Reviewed Report

Latest reviewed report found by this site

The 2025 report found for ROCK SPRINGS, CITY OF summarizes a past reporting period. It is not a live alert page.

Utility reportReport data updated: August 20, 2026

2025 Annual Water Quality Report

Open 2025 water quality report

All 13 rows from the 2025 reporting-period table appear above with the report’s printed units, ranges, limits, qualifiers, and status cells. Earlier report periods are presented separately.

Report year: 2025
Report rows shown: 13
Source name: Rock Springs Municipal Utility 2025 Annual Water Quality Report
Source URL: Open report source
Source retrieved: 2026-07-19
Last reviewed: 2026-07-19

Use the linked source report for the full table, definitions, footnotes, and official context.

Data coverage

This page renders all 13 reviewed rows from the latest report and keeps the 2024 and 2023 report-row tables in separate history disclosures. It does not determine current notices, address-level service, or household-tap conditions.

Latest reviewed report: 2025 report link found
Report-listed rows: 13 complete 2025 report rows shown
Detailed violation records: No detailed system-scoped records displayed
Population served: Not listed in current record
Service connections: Not listed in current record
City context: Rock Springs
County context: Not listed in current record

Customer and report requests

Rock Springs Municipal Utility contact paths

Use the official contact details for provider confirmation, report requests, concerns, and emergencies.

Billing and report contact

212 D Street, Rock Springs, WY 82901 · Monday–Friday, 8 a.m.–5 p.m.

307-352-1527 · [email protected]

Open the official billing page

Water-quality and emergency paths

Water Superintendent: 307-352-1405. Plant: 307-875-4317 ext. 225. After-hours emergency service: 307-362-6575.

Contact destinations do not prove current notice or live outage status.

Alternate language and format requests

The 2025 report says translated and alternate-format copies can be requested by phone, text, mail, or visit. A translated report was not independently confirmed.

Call 307-352-1527, text 307-352-1447, mail 212 D Street, or visit the utility.

Notices and archive

Use the utility’s maintained notices/archive destination for current source checking. This site does not turn the link into a current notice determination.

Open the utility notices and report archive

Sources checked September 18, 2026. Report-period values do not establish current compliance, advisory status, safety, exposure, address-level service, or conditions at a household tap.

Customer question

Ask before collecting a household sample

The report gives a lead-testing contact path, but the reviewed sources do not establish a current eligibility, cost, bottle, collection, or result-interpretation program.

Questions to ask

Which contact handles a property-specific water-quality question?
Is sampling available, and who collects or analyzes the sample?
What fee, bottle, chain-of-custody, and interpretation steps apply?
Which current notice or treatment records should be reviewed with the result?

Lead contact in the report

The report names the water-quality contact at 307-352-1405. This contact path does not determine a property condition or provide medical advice.

Read general EPA lead information

Governance context

City Council and JPWB meeting context

The 2025 report says City Council meetings are usually on the first and third Tuesday at 7 p.m.; JPWB meetings are held on the fourth Thursday. Verify current times and locations before attending.

The report invites residents to attend regular City Council or Joint Powers Water Board meetings. Use current city and utility notices for agendas, location, and participation instructions.

Check the utility notices destination Review the meeting context in the annual report

Local Context

City and state context for this system

ROCK SPRINGS, CITY OF is linked here to Rock Springs for navigation. That relationship does not confirm the provider for a specific address; use a bill, utility portal, or official lookup source.

Linked local context

Linked communities: Rock Springs
County context: Not listed in current record
State context: Wyoming

Browse related context

County context is shown as a field when it appears in the current record. County pages are not currently available on this site.

Related Explainers

Related contaminants and guides

Use these explainers with ROCK SPRINGS, CITY OF's report year, source table, and official report. Links are limited to existing guide and contaminant pages.

Metals and inorganic chemicals

Fluoride

Fluoride is a regulated inorganic contaminant that can occur naturally or be adjusted by a water provider. A report result alone does not establish which source applies.

Read the Fluoride contaminant guide

Disinfection byproducts

Total trihalomethanes (TTHM)

TTHM is the defined sum of four trihalomethanes formed as disinfection byproducts. It is distinct from HAA5 and from the chlorine disinfectant.

Read the Total trihalomethanes (TTHM) contaminant guide

How to look up your drinking water system

Start with a utility bill, PWSID, state lookup tool, or official report so you can find the public water system behind a city or provider name.

View How to look up your drinking water system

How to read a water quality report

A plain-English walkthrough of Consumer Confidence Reports, including report years, detected contaminants, legal limits, violations, and source notes.

View How to read a water quality report

Detection vs. violation vs. advisory

A careful guide to three different water-record terms, what each one can mean, and what official source to check next.

View Detection vs. violation vs. advisory

What public water data can and cannot tell you

What official public water records can help you check, what they cannot prove, and why missing data needs cautious interpretation.

View What public water data can and cannot tell you

How to ask your water provider about testing

Focused questions to ask a utility or water provider about reports, testing, notices, PWSID, and where to verify official records.

View How to ask your water provider about testing

What a drinking water violation means

How to separate monitoring, reporting, treatment, and health-based violation language before drawing conclusions.

View What a drinking water violation means

Corrections

Suggest a correction or newer source

If you have a newer official report, utility source, or correction, send the source link for review. This helps keep profile summaries tied to public records.

Suggest an update

Evidence

Official sources and report links

Use official federal, state, utility, or report sources before treating a page as final.

EPA data
EPA Region 8 Drinking Water Watch Wyoming identity records (opens official source)
Utility report
Rock Springs Municipal Utility 2025 Annual Water Quality Report (opens official source)
Utility website
Rock Springs Municipal Utility billing page (opens official source)
State data
Wyoming DEQ drinking-water record links (opens official source)

Data methodology

Review source hierarchy, missing-data handling, and record limitations.

View Data methodology

Data limitations

See why limited records, missing fields, and current notices need careful interpretation.

View Data limitations