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Colorado City, CO Tap Water Quality 2026

Water quality report for Colorado City, CO — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Colorado City's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Colorado City Md PWSID: CO0151200 Updated: 2026 Q2
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2 violations currently open

Lead is 3.00 ppb, 20% of the action level. PFAS has never been sampled at this system.

F

Colorado City earns an F for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: 3.00 ppb — 20% of the federal action level
PFAS never sampled at this system
110 violations since 2015, 28 health-based
2 violations currently open
Colorado City's lead level vs. all Colorado community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 3.00 ppb — 20% of the federal action level
✓ Lower lead than 35% of Colorado utilities
Population Served
2218
~1209 connections
Water Source
Surface water
Drawn from surface water — SDWIS source code SW
Active Violations
2
2 open of 110 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
20% of EPA action level
3.00 ppb
Action level: 15 ppb
Copper (Cu)
90th percentile of tap samples. SDWIS reports a copper figure only when a system exceeds the action level, so any value here is an exceedance.
115.4% of EPA action level
1,500 ppb
Action level: 1,300 ppb
The 90th-percentile lead result is 3.00 ppb, 20% of the 15 ppb federal action level. The action level is a treatment trigger, not a legal maximum, and it is measured across sampled taps rather than at any single home. Copper reached the action level here; a copper figure appears in SDWIS only when a system triggers it.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Unaddressed
Lead and Copper Rule MONITORING AND REPORTING — TT 2026 Unaddressed
Public Notice OTHER — — 2025 Unaddressed
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2025 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Resolved
Public Notice OTHER — — 2024 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2024 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2024 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2024 Resolved
Public Notice OTHER — — 2023 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Groundwater Rule TREATMENT TECHNIQUE — — 2023 Unaddressed
Public Notice OTHER — — 2023 Resolved
Consumer Confidence Rule OTHER — — 2023 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2023 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2023 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2023 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.064 MG/L 0.060 mg/L 2023 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2023 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2023 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2023 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2023 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2023 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2023 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.072 MG/L 0.060 mg/L 2022 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2022 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.06094 MG/L 0.060 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.092 MG/L 0.080 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.081 MG/L 0.060 mg/L 2022 Resolved
Public Notice OTHER — — 2022 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2022 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.082 MG/L 0.060 mg/L 2022 Resolved
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022 Resolved
Barium MONITORING AND REPORTING — 2 mg/L 2022 Resolved
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Chromium MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Mercury MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
Nickel MONITORING AND REPORTING — — 2022 Resolved
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2022 Resolved
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2022 Resolved
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
Selenium MONITORING AND REPORTING — 0.05 mg/L 2022 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.077 MG/L 0.060 mg/L 2021 Resolved
TTHM MCL EXCEEDANCE 0.087 MG/L 0.080 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2021 Resolved
Consumer Confidence Rule OTHER — — 2021 Resolved
TTHM MCL EXCEEDANCE 112.18 UG/L 0.080 mg/L 2021 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 92.05 UG/L 0.060 mg/L 2021 Resolved
Public Notice OTHER — — 2021 Resolved
Public Notice OTHER — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2020 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2020 Resolved
Public Notice OTHER — — 2020 Resolved
Revised Total Coliform Rule OTHER — — 2020 Resolved
Consumer Confidence Rule OTHER — — 2019 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2019 Resolved
Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2019 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2018 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2018 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2018 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2018 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2018 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2018 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2018 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.063 MG/L 0.060 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.094 MG/L 0.080 mg/L 2018 Resolved
TTHM MCL EXCEEDANCE 0.099 MG/L 0.080 mg/L 2017 Resolved
Total Haloacetic Acids (HAA5) MCL EXCEEDANCE 0.066 MG/L 0.060 mg/L 2017 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2017 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2017 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2017 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2017 Resolved
TTHM MCL EXCEEDANCE 0.0914 MG/L 0.080 mg/L 2017 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2017 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2017 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2017 Resolved
Chlorine dioxide DISINFECTANT LEVEL 0.87 MG/L 0.8 mg/L 2016 Resolved
Chlorine dioxide MONITORING AND REPORTING — 0.8 mg/L 2016 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Stage 2 Disinfectants and Disinfection Byproducts Rule MONITORING AND REPORTING — — 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2016 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2016 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Surface Water Treatment Rule TREATMENT TECHNIQUE — — 2016 Resolved
Interim Enhanced Surface Water Treatment Rule MONITORING AND REPORTING — — 2016 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2016 Resolved
Chlorite MONITORING AND REPORTING — 1.0 mg/L 2016 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
TTHM MCL EXCEEDANCE 0.1 MG/L 0.080 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

2 violations remain open, out of 110 recorded since 2015 (28 health-based).

About the Main Water System

Utility Colorado City Md
PWSID CO0151200
Water source Surface water — Drawn from surface water — SDWIS source code SW
Population served 2,218
Service connections 1,209
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Colorado City tap water safe to drink? ▼
No federal limit is exceeded on record. 2 violation(s) remain open. Lead is 3.00 ppb, 20% of the action level.
Does Colorado City water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Colorado City? ▼
Colorado City Md (PWSID CO0151200). Surface water. Drawn from surface water — SDWIS source code SW
When was this system last inspected? ▼
It was last inspected on 2023-05-03. Inspectors recorded 3 significant deficiencies.

What Should Colorado City Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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