Annual report summary

City of Glenwood Springs: 2026 Drinking Water Quality Report Summary

11 reviewed rows from the 2026 report for PWSID CO0123314, shown with the original report source and row-level context.

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Reviewed annual reportSource retrieved: July 23, 2026Data reviewed: August 15, 2026

Report identity and source

Public water system: City of Glenwood Springs
PWSID: CO0123314
Report year: 2026
Official publisher/source: City of Glenwood Springs 2026 Drinking Water Quality Report
Source retrieved: 2026-07-23
Last reviewed: 2026-08-15

Reviewed Report Rows

11 reviewed rows from the 2026 report

Measurements, ranges, units, limit fields, status cells, likely-source wording, and table names remain scoped to the named annual-report rows.

Disinfectants

reported report rows grouped under their printed table heading.

Disinfectants: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Chlorine	Lowest period percentage of samples meeting TT requirement: 100%	0 of 10 samples below 0.2 ppm	December, 2025	ppm	TT Requirement: At least 95% of samples per period must be at least 0.2 ppm, or when sample size is less than 40 no more than one sample may be below 0.2 ppm; MRDL: 4.0	TT Violation: No (row sample period)	5	Disinfectants Sampled in the Distribution System

Report rowChlorine

Reported measurementLowest period percentage of samples meeting TT requirement: 100%

Range in report0 of 10 samples below 0.2 ppm

Testing period in reportDecember, 2025

Unitppm

Limit or standard fieldTT Requirement: At least 95% of samples per period must be at least 0.2 ppm, or when sample size is less than 40 no more than one sample may be below 0.2 ppm; MRDL: 4.0

Status printed for this rowTT Violation: No (row sample period)

Source page5

Source tableDisinfectants Sampled in the Distribution System

Microorganism Contaminants

reported report rows grouped under their printed table heading.

Microorganism Contaminants: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
E. coli	Results: 1	Reported result: 1	06/04/2025	Not listed for this report row	MCL: Routine and a Repeat Sample are Total Coliform Positive, and One is also Fecal Positive/E. Coli Positive	MCL Violation: No (row sample period)	5	Microorganism Contaminants Sampled in the Distribution System

Report rowE. coli

Reported measurementResults: 1

Range in reportReported result: 1

Testing period in report06/04/2025

UnitNot listed for this report row

Limit or standard fieldMCL: Routine and a Repeat Sample are Total Coliform Positive, and One is also Fecal Positive/E. Coli Positive

Status printed for this rowMCL Violation: No (row sample period)

Source page5

Source tableMicroorganism Contaminants Sampled in the Distribution System

Lead and Copper

reported report rows grouped under their printed table heading.

Lead and Copper: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Sites above action level	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Copper	90th Percentile: 0.06	0.002 to 0.138	0	07/01/2024 to 07/12/2024	ppm	AL: 1.3	90th Percentile AL Exceedance: No (row sample period)	6	Lead and Copper Sampled in the Distribution System
Lead	90th Percentile: 1	0 to 2.0	0	07/01/2024 to 07/12/2024	ppb	AL: 15	90th Percentile AL Exceedance: No (row sample period)	6	Lead and Copper Sampled in the Distribution System

Report rowCopper

Reported measurement90th Percentile: 0.06

Range in report0.002 to 0.138

Sites above action level0

Testing period in report07/01/2024 to 07/12/2024

Unitppm

Limit or standard fieldAL: 1.3

Status printed for this row90th Percentile AL Exceedance: No (row sample period)

Source page6

Source tableLead and Copper Sampled in the Distribution System

Report rowLead

Reported measurement90th Percentile: 1

Range in report0 to 2.0

Sites above action level0

Testing period in report07/01/2024 to 07/12/2024

Unitppb

Limit or standard fieldAL: 15

Status printed for this row90th Percentile AL Exceedance: No (row sample period)

Source page6

Source tableLead and Copper Sampled in the Distribution System

Disinfection Byproducts

reported report rows grouped under their printed table heading.

Disinfection Byproducts: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Total Haloacetic Acids (HAA5)	Average: 24.9; Average: 24.9	7.69 to 59.15	2025	ppb	MCL: 60; MCLG: N/A	Violation: No (row sample period)	6	Disinfection Byproducts Sampled in the Distribution System
Total Trihalomethanes (TTHM)	Average: 28.01; Average: 28.01	9.67 to 70.81	2025	ppb	MCL: 80; MCLG: N/A	Violation: No (row sample period)	6	Disinfection Byproducts Sampled in the Distribution System

Report rowTotal Haloacetic Acids (HAA5)

Reported measurementAverage: 24.9; Average: 24.9

Range in report7.69 to 59.15

Testing period in report2025

Unitppb

Limit or standard fieldMCL: 60; MCLG: N/A

Status printed for this rowViolation: No (row sample period)

Source page6

Source tableDisinfection Byproducts Sampled in the Distribution System

Report rowTotal Trihalomethanes (TTHM)

Reported measurementAverage: 28.01; Average: 28.01

Range in report9.67 to 70.81

Testing period in report2025

Unitppb

Limit or standard fieldMCL: 80; MCLG: N/A

Status printed for this rowViolation: No (row sample period)

Source page6

Source tableDisinfection Byproducts Sampled in the Distribution System

Total Organic Carbon Removal Ratio

reported report rows grouped under their printed table heading.

Total Organic Carbon Removal Ratio: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Total Organic Carbon Ratio	Average: 1.18; Average: 1.18	0.6 to 3.1	2025	Ratio	TT Minimum Ratio: 1.00	TT Violation: No (row sample period)	7	Total Organic Carbon Removal Ratio of Raw and Finished Water

Report rowTotal Organic Carbon Ratio

Reported measurementAverage: 1.18; Average: 1.18

Range in report0.6 to 3.1

Testing period in report2025

UnitRatio

Limit or standard fieldTT Minimum Ratio: 1.00

Status printed for this rowTT Violation: No (row sample period)

Source page7

Source tableTotal Organic Carbon Removal Ratio of Raw and Finished Water

Turbidity Treatment Technique

reported report rows grouped under their printed table heading.

Turbidity Treatment Technique: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Turbidity - highest single measurement	Highest single measurement: 0.147	Highest single measurement: 0.147 NTU	May	NTU	TT Requirement: Maximum 1 NTU for any single measurement	TT Violation: No (row sample period)	7	Summary of Turbidity Sampled at the Entry Point to the Distribution System
Turbidity - monthly treatment standard	Lowest monthly percentage of samples meeting TT requirement: 100%	Monthly result: 100%	Dec	%	TT Requirement: In any month, at least 95% of samples must be less than 0.3 NTU	TT Violation: No (row sample period)	7	Summary of Turbidity Sampled at the Entry Point to the Distribution System

Report rowTurbidity - highest single measurement

Reported measurementHighest single measurement: 0.147

Range in reportHighest single measurement: 0.147 NTU

Testing period in reportMay

UnitNTU

Limit or standard fieldTT Requirement: Maximum 1 NTU for any single measurement

Status printed for this rowTT Violation: No (row sample period)

Source page7

Source tableSummary of Turbidity Sampled at the Entry Point to the Distribution System

Report rowTurbidity - monthly treatment standard

Reported measurementLowest monthly percentage of samples meeting TT requirement: 100%

Range in reportMonthly result: 100%

Testing period in reportDec

Unit%

Limit or standard fieldTT Requirement: In any month, at least 95% of samples must be less than 0.3 NTU

Status printed for this rowTT Violation: No (row sample period)

Source page7

Source tableSummary of Turbidity Sampled at the Entry Point to the Distribution System

Inorganic Contaminants

reported report rows grouped under their printed table heading.

Inorganic Contaminants: 2026 annual-report rows for City of Glenwood Springs
Report row	Reported measurement	Range in report	Testing period in report	Unit	Limit or standard field	Status printed for this row	Source page	Source table
Fluoride	Average: 0.75; Average: 0.75	0.73 to 0.78	2024	ppm	MCL: 4; MCLG: 4	Violation: No (row sample period)	7	Inorganic Contaminants Sampled at the Entry Point to the Distribution System
Nitrate	Average: 0.3; Average: 0.3	0.3 to 0.3	2025	ppm	MCL: 10; MCLG: 10	Violation: No (row sample period)	8	Inorganic Contaminants Sampled at the Entry Point to the Distribution System

Report rowFluoride

Reported measurementAverage: 0.75; Average: 0.75

Range in report0.73 to 0.78

Testing period in report2024

Unitppm

Limit or standard fieldMCL: 4; MCLG: 4

Status printed for this rowViolation: No (row sample period)

Source page7

Source tableInorganic Contaminants Sampled at the Entry Point to the Distribution System

Report rowNitrate

Reported measurementAverage: 0.3; Average: 0.3

Range in report0.3 to 0.3

Testing period in report2025

Unitppm

Limit or standard fieldMCL: 10; MCLG: 10

Status printed for this rowViolation: No (row sample period)

Source page8

Source tableInorganic Contaminants Sampled at the Entry Point to the Distribution System

Report footnotes

1: Printed No cells apply only to the row's stated sample or report period and do not establish current status.
2: The report says some representative monitoring may be more than one year old and displays only detected contaminants sampled within the last five years.
3: The report describes one June 4, 2025 positive sampling event, immediate repeat samples that did not detect contamination, and no administered violation. This is dated report-period context, not a current-status statement.
4: Lead and copper values summarize selected-tap monitoring from July 1 through July 12, 2024. They are not measurements for every service line, property, or household tap.
5: The source says that if the minimum ratio is not met and no violation is identified, the system achieved compliance using alternative criteria. The row remains a treatment-technique ratio, not a concentration.
6: The highest single NTU measurement is distinct from the monthly percentage of samples meeting the treatment technique.

Reported row

Chlorine

Likely source listed in report: Water additive used to control microbes
Source table: Disinfectants Sampled in the Distribution System

Preservation and source notes

reported row transcribed from linked report page 5. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

E. coli

Likely source listed in report: Human and animal fecal waste
Source table: Microorganism Contaminants Sampled in the Distribution System

Preservation and source notes

Page 5 prints one result on June 4, 2025 and a separate incident narrative. The narrative is preserved as dated source context and does not establish current microbiological conditions, current notices, or safety.

Reported row

Copper

Likely source listed in report: Corrosion of household plumbing systems; erosion of natural deposits
Source table: Lead and Copper Sampled in the Distribution System

Preservation and source notes

reported row transcribed from linked report page 6. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Lead

Likely source listed in report: Corrosion of household plumbing systems; erosion of natural deposits
Source table: Lead and Copper Sampled in the Distribution System

Preservation and source notes

reported row transcribed from linked report page 6. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Total Haloacetic Acids (HAA5)

Likely source listed in report: Byproduct of drinking water disinfection
Source table: Disinfection Byproducts Sampled in the Distribution System

Preservation and source notes

reported row transcribed from linked report page 6. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Total Trihalomethanes (TTHM)

Likely source listed in report: Byproduct of drinking water disinfection
Source table: Disinfection Byproducts Sampled in the Distribution System

Preservation and source notes

reported row transcribed from linked report page 6. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Total Organic Carbon Ratio

Likely source listed in report: Naturally present in the environment
Source table: Total Organic Carbon Removal Ratio of Raw and Finished Water

Preservation and source notes

reported row transcribed from linked report page 7. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Turbidity - highest single measurement

Likely source listed in report: Soil runoff
Source table: Summary of Turbidity Sampled at the Entry Point to the Distribution System

Preservation and source notes

reported row transcribed from linked report page 7. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Turbidity - monthly treatment standard

Likely source listed in report: Soil runoff
Source table: Summary of Turbidity Sampled at the Entry Point to the Distribution System

Preservation and source notes

reported row transcribed from linked report page 7. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Fluoride

Likely source listed in report: Erosion of natural deposits; water additive which promotes strong teeth; discharge from fertilizer and aluminum factories
Source table: Inorganic Contaminants Sampled at the Entry Point to the Distribution System

Preservation and source notes

reported row transcribed from linked report page 7. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Reported row

Nitrate

Likely source listed in report: Runoff from fertilizer use; leaching from septic tanks, sewage; erosion of natural deposits
Source table: Inorganic Contaminants Sampled at the Entry Point to the Distribution System

Preservation and source notes

reported row transcribed from linked report page 8. Printed fields describe the row sample period and are not a present-day safety or compliance conclusion.

Report Context

Context attributed to the source report

These summaries are limited to the named annual report and do not assert live system, compliance, or advisory status.

Annual-report identity and scope

The official report directly prints PWSID CO0123314, identifies itself as the 2026 Drinking Water Quality Report, and says it covers calendar year 2025.

General vulnerable-population notice

The report reproduces general EPA guidance for people who may be more vulnerable to contaminants. It is educational context, not a system-specific advisory.

Source-water context

The report names No Name Creek, Grizzly Creek, and the Roaring Fork River as surface-water intakes and lists potential contamination sources as assessment context.

Detected-data scope

The report says its tables cover detections from January 1 through December 31, 2025 unless otherwise noted, may include representative data older than one year, and show only detected contaminants sampled within the last five years.

June 2025 sampling narrative

The report says a June 4, 2025 sample at one site was positive for Total Coliform and E. coli, immediate repeat samples at the original, upstream, and downstream sites did not detect contamination, and no violation was administered. The statement is preserved only as historical report-period context.

Unregulated monitoring context

The UCMR table prints None Detected for 2025 and leaves the value, range, sample-size, and unit cells blank. No twelfth result row is created.

Printed report-period statement

The report ends with a statement indicating zero violations, significant deficiencies, and formal enforcement actions. The statement is retained only as report-period context.

Definitions

The report defines the regulatory terms and units used in its tables. They are reproduced as report-reading context, not as interpretation of any result.

Definitions printed in this report

MCL: Maximum Contaminant Level: The highest level of a contaminant allowed in drinking water.
TT: Treatment Technique: A required process intended to reduce the level of a contaminant in drinking water.
Health-Based: A violation of either an MCL or TT.
Non-Health-Based: A violation that is not an MCL or TT.
AL: Action Level: The concentration of a contaminant which, if exceeded, triggers treatment and other regulatory requirements.
MRDL: Maximum Residual Disinfectant Level: The highest level of a disinfectant allowed in drinking water.
MCLG: Maximum Contaminant Level Goal: The level below which there is no known or expected risk to health and which allows a margin of safety.
MRDLG: Maximum Residual Disinfectant Level Goal: The level below which there is no known or expected risk to health.
Violation: Failure to meet a Colorado Primary Drinking Water Regulation.
Formal Enforcement Action: Escalated action taken by the State to bring a non-compliant water system back into compliance.
V/E: Variance and Exemptions: Department permission not to meet an MCL or treatment technique under certain conditions.
Gross Alpha: Gross alpha particle activity compliance value, including radium-226 but excluding radon 222 and uranium.
pCi/L: Picocuries per liter: A measure of radioactivity in water.
NTU: Nephelometric Turbidity Unit: A measure of the clarity or cloudiness of water.
Compliance Value: A single or calculated value used to determine whether a regulatory contaminant level is met.
Average: Typical value.
Range: Lowest value to the highest value.
Sample Size: Number or count of values, meaning the number of water samples collected.
ppm: Parts per million, equivalent to milligrams per liter.
ppb: Parts per billion, equivalent to micrograms per liter.
N/A: Not applicable or not available.
Level 1 Assessment: A study of the water system to identify possible reasons total coliform bacteria were found.
Level 2 Assessment: A detailed study to identify possible reasons for an E. coli MCL violation or repeated total coliform findings.

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

Report Disclosures

Source-period disclosures kept separate from live status

These items preserve report wording and scope. They do not create violation records, advisory records, or a current-status conclusion.

Source limitation

Annual report is not current status

The 2026 document covers calendar year 2025 and also includes some 2024 monitoring. Its rows and narrative do not establish present-day compliance, notice status, safety, or conditions at a household tap.