MyCleanWater

Cortez, Colorado Water Quality Report

Water quality data for 4 water systems serving 9,556 people.

45
Poor
out of 100

Water Source

4
Water Systems
10K
People Served
Surface water
Water Source

Detected Contaminants

ContaminantDetected LevelEPA Limit (MCL)Health Guideline% of LimitStatus
lithium25.0 No federal limit10.0 ug/L(EPA/USGS HBSL)
250%
Above guideline

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Compliance & Violations

Active Violations (56)

66

Oct 1, 2025

moderate

66

Oct 1, 2025

moderate

66

Oct 1, 2025

moderate

66

Oct 1, 2025

moderate

75

Sep 8, 2025

minor

75

Sep 8, 2025

minor

51

Jul 1, 2025

moderate

51

Jul 1, 2025

moderate

51

Jul 1, 2025

moderate

51

Jul 1, 2025

moderate

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

71

Jul 1, 2025

minor

75

Jun 8, 2025

minor

75

Jun 8, 2025

minor

5A

Apr 11, 2025

minor

5A

Apr 11, 2025

minor

35

Apr 11, 2025

moderate

35

Apr 11, 2025

moderate

5A

Apr 11, 2025

minor

35

Apr 11, 2025

moderate

35

Apr 11, 2025

moderate

5A

Apr 11, 2025

minor

75

Mar 8, 2025

minor

75

Mar 8, 2025

minor

66

Jan 1, 2025

moderate

66

Jan 1, 2025

moderate

66

Jan 1, 2025

moderate

75

Dec 8, 2024

minor

75

Dec 8, 2024

minor

4G

Oct 17, 2024

minor

2E

Oct 17, 2024

critical

2E

Oct 17, 2024

critical

2E

Oct 17, 2024

critical

4G

Oct 17, 2024

minor

4G

Oct 17, 2024

minor

71

Jul 1, 2024

minor

71

Jul 1, 2024

minor

71

Jul 1, 2024

minor

76

Oct 6, 2023

minor

76

Oct 6, 2023

minor

76

Jul 6, 2023

minor

76

Jul 6, 2023

minor

71

Oct 19, 1999

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Violation

Unknown

minor

Resolved Violations (297)

3A

Mar 1, 2025 — Mar 31, 2025

minor

36

Mar 1, 2025 — Mar 31, 2025

moderate

3A

Mar 1, 2025 — Mar 31, 2025

minor

3A

Mar 1, 2025 — Mar 31, 2025

minor

36

Mar 1, 2025 — Mar 31, 2025

moderate

+ 292 more resolved violations

Frequently Asked Questions

Is Cortez tap water safe to drink?

Cortez's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.

What contaminants are in Cortez tap water?

1 contaminants have been detected in Cortez's water supply across 4 water systems. See the full contaminant table above for details.

How can I improve my water quality in Cortez?

Install a water filter rated for the specific contaminants found in Cortez's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.

Does Cortez have any water quality violations?

Yes, Cortez currently has 56 active violations. See the violations section above for details.