Public water system profile

City of Cibolo

Explore available public water records for City of Cibolo (PWSID TX0940018). Find annual reports, results listed in those reports, official sources, and clear notes about what the records can and cannot show. This page does not show conditions at a specific tap.

View report rows

System Snapshot

Available system-level context

This snapshot shows the identity and context fields currently available for City of Cibolo (PWSID TX0940018). Read it with the source links and limitations below.

Last updated: Data reviewed:

System identity

PWSID
TX0940018
State
Texas
Linked communities
Cibolo
County context
Not listed in current record
System type
Public water system
Source water
Purchased surface water and groundwater
Population served context
Not listed in current record
Service connections
Not listed in current record
Latest reviewed report
2025 report link found
Data updated
2026-08-11

A source-backed population-served value is not currently shown for this system. City population should not be used as a substitute for the public water system population.

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

Report-listed rows summarized from the latest reviewed report

23 report-listed rows are summarized for City of Cibolo. A listed row is not the same thing as a current advisory or household tap result.

Report year
2025
Rows summarized
23
Source tables represented
14
Scope
Past reporting period
Report-row preview from the latest reviewed report for City of Cibolo
Substance and testing periodReported valueRange in reportLimit or standardSource tableReport-printed status
Coliform BacteriaTesting period: January 1 through December 31, 20250 Not listed in this summarized entryHighest No. of PositiveTotal No. of Positive E. Coli or Fecal Coliform Samples: 0MCLG: 0; Total Coliform MCL: 0; Fecal Coliform or E. Coli MCL: 0Coliform BacteriaPage 4Typical source, as printed: Naturally present in the environment.Violation: N, as printed for this sample period
CopperTesting period: 09/16/2025Sites above action level00.066 ppm90th PercentileNot listed in this summarized entryMCLG: 1.3; Action Level (AL): 1.3Lead and CopperPage 4Typical source, as printed: Erosion of natural deposits; Leaching from wood preservatives; Corrosion of household plumbing systems.Violation: N, as printed for this sample period
LeadTesting period: 09/16/2025Sites above action level02.4 ppb90th PercentileNot listed in this summarized entryMCLG: 0; Action Level (AL): 15Lead and CopperPage 4Typical source, as printed: Corrosion of household plumbing systems; Erosion of natural deposits.Violation: N, as printed for this sample period
Haloacetic Acids (HAA5)Testing period: 202513 ppbHighest Level Detected3.4 - 14.3MCLG: No goal for the total; MCL: 60Disinfection By-ProductsPage 4Typical source, as printed: By-product of drinking water disinfection.Violation: N, as printed for this sample period
Total Trihalomethanes (TTHM)Testing period: 202554 ppbHighest Level Detected22.9 - 61.3MCLG: No goal for the total; MCL: 80Disinfection By-ProductsPage 4Typical source, as printed: By-product of drinking water disinfection.Violation: N, as printed for this sample period
Nitrate [measured as Nitrogen]Testing period: 20252 ppmHighest Level Detected0 - 1.97MCLG: 10; MCL: 10Inorganic ContaminantsPage 4Typical source, as printed: Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits.Violation: N, as printed for this sample period
Free ChlorineTesting period: 20252.26 ppmAverage Level: 2.26; Average Level: 2.261.58 - 3.6MRDL: 4; MRDLG: 4Disinfectant ResidualPage 5Typical source, as printed: Water additive used to control microbes.Violation: N, as printed for this sample period
Barium - CRWA Wells RanchTesting period: 2025.082 mg/LHighest Level Detected.001 - 2MCLG: 2; MCL: 2CRWA Wells Ranch - Inorganic ContaminantsPage 5Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.Violation: N, as printed for this sample period
Beta/photon emitters - CRWA Wells RanchTesting period: 20244.8 pCi/LHighest Level Detected0.0 - 4.8MCLG: 0; MCL: 50CRWA Wells Ranch - Radioactive ContaminantsPage 5Typical source, as printed: Decay of natural and man-made deposits.Violation: N, as printed for this sample period
Alpha emitters - CRWA Wells RanchTesting period: 2024<3.0 pCi/LHighest Level DetectedN/AMCLG: 0; MCL: 15CRWA Wells Ranch - Radioactive ContaminantsPage 5Typical source, as printed: Erosion of natural deposits.Violation: N, as printed for this sample period
Radium-228 - CRWA Wells RanchTesting period: 2024<1.0 pCi/LHighest Level DetectedN/AMCLG: 0; MCL: 5CRWA Wells Ranch - Radioactive ContaminantsPage 5Typical source, as printed: Erosion of natural deposits.Violation: N, as printed for this sample period
Di (2-ethylhexyl) phthalate - CRWA Wells RanchTesting period: 2025<0.6 ppbHighest Level Detected0.6 - 6MCLG: 0; MCL: 6CRWA Wells Ranch - Synthetic organic contaminants including pesticides and herbicidesPage 5Typical source, as printed: Discharge from rubber and chemical factories.Violation: N, as printed for this sample period
Barium - CRWA Lake Dunlap WTPTesting period: 20250.04 mg/LHighest Level Detected0.0000 - 2.0MCLG: 2; MCL: 2CRWA Lake Dunlap WTP - Inorganic ContaminantsPage 6Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.Violation: N, as printed for this sample period
Fluoride - CRWA Lake Dunlap WTPTesting period: 2025<0.5 mg/LHighest Level Detected0.5 - 4.0MCLG: 4; MCL: 4CRWA Lake Dunlap WTP - Inorganic ContaminantsPage 6Typical source, as printed: Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.Violation: N, as printed for this sample period
Turbidity - highest single measurement - CRWA Lake Dunlap WTPTesting period: 2025 report period0.175 NTULevel DetectedNot listed in this summarized entryTreatment Technique: 1 NTUCRWA Lake Dunlap WTP - TurbidityPage 6Typical source, as printed: Soil runoff, Bacteria, organic material, suspended particles.Violation: N, as printed for this sample period
Turbidity - lowest monthly percent meeting limit - CRWA Lake Dunlap WTPTesting period: 2025 report period100% Not listed in this summarized entryLevel DetectedNot listed in this summarized entryTreatment Technique: 0.3 NTUCRWA Lake Dunlap WTP - TurbidityPage 6Typical source, as printed: Soil runoff, Bacteria, organic material, suspended particles.Violation: N, as printed for this sample period
Chlorite - City of SchertzTesting period: 20250 ppmHighest Level Detected0MCLG: 0.8; MCL: 1City of Schertz - Disinfection By-ProductsPage 6Typical source, as printed: By-product of drinking water disinfection.Violation: N, as printed for this sample period
Haloacetic Acids (HAA5) - City of SchertzTesting period: 20251.3 ppbHighest Level Detected0 - 1.3MCLG: No goal for the total; MCL: 60City of Schertz - Disinfection By-ProductsPage 7Typical source, as printed: By-product of drinking water disinfection.Violation: N, as printed for this sample period
Total Trihalomethanes (TTHM) - City of SchertzTesting period: 20257 ppbHighest Level Detected4.6 - 6.3MCLG: No goal for the total; MCL: 80City of Schertz - Disinfection By-ProductsPage 7Typical source, as printed: By-product of drinking water disinfection.Violation: N, as printed for this sample period
Barium - City of SchertzTesting period: 20250.117 ppmHighest Level Detected0.117 - 0.117MCLG: 2; MCL: 2City of Schertz - Inorganic ContaminantsPage 7Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.Violation: N, as printed for this sample period
Fluoride - City of SchertzTesting period: 2025<0.5 ppmHighest Level Detected0.11 - 0.5MCLG: 4; MCL: 4.0City of Schertz - Inorganic ContaminantsPage 7Typical source, as printed: Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.Violation: N, as printed for this sample period
Beta/photon emitters - City of SchertzTesting period: 20254.9 pCi/L*Highest Level Detected0 - 4.9MCLG: 0; MCL: 50City of Schertz - Radioactive ContaminantsPage 7Typical source, as printed: Decay of natural and man-made deposits.Violation: N, as printed for this sample period
Chlorine - City of SchertzTesting period: 20251.70 ppmAverage Level: 1.70; Average Level: 1.701.2 - 2.10MRDL: 4; MRDLG: 4City of Schertz - Disinfectant ResidualPage 7Typical source, as printed: Water additive used to control microbes.Violation: N, as printed for this sample period

Report row

Coliform Bacteria

Range in report
Total No. of Positive E. Coli or Fecal Coliform Samples: 0
Highest No. of Positive
0 Not listed in this summarized entry
Testing period
January 1 through December 31, 2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; Total Coliform MCL: 0; Fecal Coliform or E. Coli MCL: 0
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Coliform Bacteria

Typical source, as printed: Naturally present in the environment.

Report row

Copper

Range in report
Not listed in this summarized entry
90th Percentile
0.066 ppm
Testing period
09/16/2025
Sites above action level
0
Limit or standard
MCLG: 1.3; Action Level (AL): 1.3
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Lead and Copper

Typical source, as printed: Erosion of natural deposits; Leaching from wood preservatives; Corrosion of household plumbing systems.

Report row

Lead

Range in report
Not listed in this summarized entry
90th Percentile
2.4 ppb
Testing period
09/16/2025
Sites above action level
0
Limit or standard
MCLG: 0; Action Level (AL): 15
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Lead and Copper

Typical source, as printed: Corrosion of household plumbing systems; Erosion of natural deposits.

Report row

Haloacetic Acids (HAA5)

Range in report
3.4 - 14.3 ppb
Highest Level Detected
13 ppb
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: No goal for the total; MCL: 60
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Disinfection By-Products

Typical source, as printed: By-product of drinking water disinfection.

Report row

Total Trihalomethanes (TTHM)

Range in report
22.9 - 61.3 ppb
Highest Level Detected
54 ppb
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: No goal for the total; MCL: 80
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Disinfection By-Products

Typical source, as printed: By-product of drinking water disinfection.

Report row

Nitrate [measured as Nitrogen]

Range in report
0 - 1.97 ppm
Highest Level Detected
2 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 10; MCL: 10
Report-printed status
Violation: N, as printed for this sample period

Source · Page 4

Inorganic Contaminants

Typical source, as printed: Runoff from fertilizer use; Leaching from septic tanks, sewage; Erosion of natural deposits.

Report row

Free Chlorine

Range in report
1.58 - 3.6 ppm
Average Level: 2.26; Average Level: 2.26
2.26 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MRDL: 4; MRDLG: 4
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

Disinfectant Residual

Typical source, as printed: Water additive used to control microbes.

Report row

Barium - CRWA Wells Ranch

Range in report
.001 - 2 mg/L
Highest Level Detected
.082 mg/L
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 2; MCL: 2
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

CRWA Wells Ranch - Inorganic Contaminants

Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

Report row

Beta/photon emitters - CRWA Wells Ranch

Range in report
0.0 - 4.8 pCi/L
Highest Level Detected
4.8 pCi/L
Testing period
2024
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; MCL: 50
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

CRWA Wells Ranch - Radioactive Contaminants

Typical source, as printed: Decay of natural and man-made deposits.

Report row

Alpha emitters - CRWA Wells Ranch

Range in report
N/A
Highest Level Detected
<3.0 pCi/L
Testing period
2024
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; MCL: 15
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

CRWA Wells Ranch - Radioactive Contaminants

Typical source, as printed: Erosion of natural deposits.

Report row

Radium-228 - CRWA Wells Ranch

Range in report
N/A
Highest Level Detected
<1.0 pCi/L
Testing period
2024
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; MCL: 5
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

CRWA Wells Ranch - Radioactive Contaminants

Typical source, as printed: Erosion of natural deposits.

Report row

Di (2-ethylhexyl) phthalate - CRWA Wells Ranch

Range in report
0.6 - 6 ppb
Highest Level Detected
<0.6 ppb
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; MCL: 6
Report-printed status
Violation: N, as printed for this sample period

Source · Page 5

CRWA Wells Ranch - Synthetic organic contaminants including pesticides and herbicides

Typical source, as printed: Discharge from rubber and chemical factories.

Report row

Barium - CRWA Lake Dunlap WTP

Range in report
0.0000 - 2.0 mg/L
Highest Level Detected
0.04 mg/L
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 2; MCL: 2
Report-printed status
Violation: N, as printed for this sample period

Source · Page 6

CRWA Lake Dunlap WTP - Inorganic Contaminants

Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

Report row

Fluoride - CRWA Lake Dunlap WTP

Range in report
0.5 - 4.0 mg/L
Highest Level Detected
<0.5 mg/L
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 4; MCL: 4
Report-printed status
Violation: N, as printed for this sample period

Source · Page 6

CRWA Lake Dunlap WTP - Inorganic Contaminants

Typical source, as printed: Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.

Report row

Turbidity - highest single measurement - CRWA Lake Dunlap WTP

Range in report
Not listed in this summarized entry
Level Detected
0.175 NTU
Testing period
2025 report period
Sites above action level
Not applicable to this summarized entry
Limit or standard
Treatment Technique: 1 NTU
Report-printed status
Violation: N, as printed for this sample period

Source · Page 6

CRWA Lake Dunlap WTP - Turbidity

Typical source, as printed: Soil runoff, Bacteria, organic material, suspended particles.

Report row

Turbidity - lowest monthly percent meeting limit - CRWA Lake Dunlap WTP

Range in report
Not listed in this summarized entry
Level Detected
100% Not listed in this summarized entry
Testing period
2025 report period
Sites above action level
Not applicable to this summarized entry
Limit or standard
Treatment Technique: 0.3 NTU
Report-printed status
Violation: N, as printed for this sample period

Source · Page 6

CRWA Lake Dunlap WTP - Turbidity

Typical source, as printed: Soil runoff, Bacteria, organic material, suspended particles.

Report row

Chlorite - City of Schertz

Range in report
0 ppm
Highest Level Detected
0 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0.8; MCL: 1
Report-printed status
Violation: N, as printed for this sample period

Source · Page 6

City of Schertz - Disinfection By-Products

Typical source, as printed: By-product of drinking water disinfection.

Report row

Haloacetic Acids (HAA5) - City of Schertz

Range in report
0 - 1.3 ppb
Highest Level Detected
1.3 ppb
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: No goal for the total; MCL: 60
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Disinfection By-Products

Typical source, as printed: By-product of drinking water disinfection.

Report row

Total Trihalomethanes (TTHM) - City of Schertz

Range in report
4.6 - 6.3 ppb
Highest Level Detected
7 ppb
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: No goal for the total; MCL: 80
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Disinfection By-Products

Typical source, as printed: By-product of drinking water disinfection.

Report row

Barium - City of Schertz

Range in report
0.117 - 0.117 ppm
Highest Level Detected
0.117 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 2; MCL: 2
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Inorganic Contaminants

Typical source, as printed: Discharge of drilling wastes; Discharge from metal refineries; Erosion of natural deposits.

Report row

Fluoride - City of Schertz

Range in report
0.11 - 0.5 ppm
Highest Level Detected
<0.5 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 4; MCL: 4.0
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Inorganic Contaminants

Typical source, as printed: Erosion of natural deposits; Water additive which promotes strong teeth; Discharge from fertilizer and aluminum factories.

Report row

Beta/photon emitters - City of Schertz

Range in report
0 - 4.9 pCi/L*
Highest Level Detected
4.9 pCi/L*
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MCLG: 0; MCL: 50
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Radioactive Contaminants

Typical source, as printed: Decay of natural and man-made deposits.

Report row

Chlorine - City of Schertz

Range in report
1.2 - 2.10 ppm
Average Level: 1.70; Average Level: 1.70
1.70 ppm
Testing period
2025
Sites above action level
Not applicable to this summarized entry
Limit or standard
MRDL: 4; MRDLG: 4
Report-printed status
Violation: N, as printed for this sample period

Source · Page 7

City of Schertz - Disinfectant Residual

Typical source, as printed: Water additive used to control microbes.

Source report notes

Source: City of Cibolo 2025 Consumer Confidence Report. Retrieved 2026-08-11.

  • Applies to: Coliform Bacteria, Copper, Lead, Haloacetic Acids (HAA5), Total Trihalomethanes (TTHM), Nitrate [measured as Nitrogen]

    Visually reviewed against official PDF page 4. Source-printed values retained without present-day interpretation.

  • Applies to: Free Chlorine, Barium - CRWA Wells Ranch, Beta/photon emitters - CRWA Wells Ranch, Alpha emitters - CRWA Wells Ranch, Radium-228 - CRWA Wells Ranch

    Visually reviewed against official PDF page 5. Source-printed values retained without present-day interpretation.

  • Applies to: Di (2-ethylhexyl) phthalate - CRWA Wells Ranch

    Visually reviewed against official PDF page 5. The source prints a less-than result of <0.6 and a range of 0.6 - 6; both are retained without reconciliation.

  • Applies to: Barium - CRWA Lake Dunlap WTP, Turbidity - highest single measurement - CRWA Lake Dunlap WTP, Turbidity - lowest monthly percent meeting limit - CRWA Lake Dunlap WTP, Chlorite - City of Schertz

    Visually reviewed against official PDF page 6. Source-printed values retained without present-day interpretation.

  • Applies to: Fluoride - CRWA Lake Dunlap WTP

    Visually reviewed against official PDF page 6. The source prints a less-than result of <0.5 and a range of 0.5 - 4.0; both are retained without reconciliation.

  • Applies to: Haloacetic Acids (HAA5) - City of Schertz, Barium - City of Schertz, Fluoride - City of Schertz, Beta/photon emitters - City of Schertz, Chlorine - City of Schertz

    Visually reviewed against official PDF page 7. Source-printed values retained without present-day interpretation.

  • Applies to: Total Trihalomethanes (TTHM) - City of Schertz

    Visually reviewed against official PDF page 7. The source prints Highest Level Detected 7 and Range of Individual Samples 4.6 - 6.3; both are retained without reconciliation.

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

Violation Records

Violation records shown on this page

This section shows 0 system-scoped violation detail records currently included for City of Cibolo. Annual reports and current notices can use different timing and terminology.

No system-scoped violation detail records are included in the available reviewed records for this system. This is not an official compliance finding. Check the official utility, state, or EPA source for current compliance and notice information.

Important limitation

Profile summary note

This page summarizes public records reviewed by this site. It does not replace official notices, utility updates, or state drinking water information.

System profile limitations

  • This record is based on official City of Cibolo utility pages, the 2025 Consumer Confidence Report, TCEQ verification guidance, and an EPA ECHO identity cross-check reviewed through August 11, 2026.
  • Address-level service can vary. Confirm the serving provider with a bill, account portal, utility, city, or state source.
  • The 2025 report also says Cibolo Crossing and Mesa at Turning Stone Units 6 and 7 receive drinking water purchased from the City of Schertz.
  • Population served was not listed from an allowed source; the local record omits the value rather than storing zero as a population count.
  • Source water is summarized from the 2025 report as purchased surface water and groundwater; this is report context, not a complete live source-water inventory.
  • This system page displays summarized entries and does not include a complete historical contaminant table; the source data includes all result rows from the 2025 report.
  • This page shows summarized entries from the available report. It does not include a complete contaminant or violation table.
  • Missing fields are not findings. They mean the field is not shown on this page from the records currently available.
  • This page summarizes available public records. It may not include every update, notice, or urgent official advisory.

Latest Reviewed Report

Latest reviewed report found by this site

The 2025 report found for City of Cibolo summarizes a past reporting period. It is not a live alert page.

Utility reportReport data updated:

2025 Consumer Confidence Report

Open 2025 water quality report

The 2025 report link is available for City of Cibolo. Use the linked source report for the full table, definitions, footnotes, and official context. This page includes summarized entries from the available report. They are not a complete copy of the report table.

Report year
2025
Summarized entries shown
23
Source name
City of Cibolo 2025 Consumer Confidence Report
Source URL
Open report source
Source retrieved
2026-08-11
Last reviewed
2026-08-11

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

Data coverage

This page summarizes selected public records for this public water system. It may not include every report, update, current notice, or address-level service detail.

Latest reviewed report
2025 report link found
Report-listed rows
23 summarized report entries 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
Cibolo
County context
Not listed in current record

Local Context

City and state context for this system

City of Cibolo is linked here to Cibolo 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
Cibolo
County context
Not listed in current record
State context
Texas

Related Explainers

Related contaminants and guides

Use these explainers with City of Cibolo's report year, source table, and official report. Links are limited to existing guide and contaminant pages.

Metals and inorganic chemicals

Lead

Lead is regulated through a treatment technique and tap-sampling action-level framework. A report row does not describe every tap or identify a home's plumbing.

Read the Lead contaminant guide

Metals and inorganic chemicals

Nitrate

Nitrate is a regulated inorganic contaminant. Report labels often specify that the result is measured as nitrogen, and that basis must remain attached to the value and unit.

Read the Nitrate 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

Corrections

Suggest a correction or newer source

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Evidence

Official sources and report links

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Data methodology

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

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Data limitations

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

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