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Sheridan Lake, CO Tap Water Quality 2026

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

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

Main Utility: Sheridan Lake Wd PWSID: CO0131800 Updated: 2026 Q2
✅

No federal limits exceeded on record

Lead is 0.60 ppb, 4% of the action level and no violations are open. PFAS has never been sampled at this system.

C

Sheridan Lake earns a C for water quality

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

Lead: 0.60 ppb — 4% of the federal action level
PFAS never sampled at this system
154 violations since 2015, 20 health-based
No violations currently open
Sheridan Lake's lead level vs. all Colorado community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: 0.60 ppb — 4% of the federal action level
✓ Lower lead than 96% of Colorado utilities
Population Served
54
~64 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
0
154 since 2015, all resolved

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
4% of EPA action level
0.60 ppb
Action level: 15 ppb
The 90th-percentile lead result is 0.60 ppb, 4% 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.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Public Notice OTHER — — 2026 Resolved
Public Notice OTHER — — 2025 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Unaddressed
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2025 Resolved
Public Notice OTHER — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Resolved
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Groundwater Rule TREATMENT TECHNIQUE — — 2024 Resolved
Public Notice OTHER — — 2024 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2023 Resolved
Combined Uranium MONITORING AND REPORTING — 30 ug/L 2023 Resolved
Combined Uranium MCL EXCEEDANCE 31.25 UG/L 30 ug/L 2023 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2023 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2022 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2022 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2022 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2022 Resolved
Fluoride MONITORING AND REPORTING — 4.0 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
Nitrate MONITORING AND REPORTING — 10 mg/L 2022 Resolved
1,2,4-Trichlorobenzene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
cis-1,2-Dichloroethylene MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
Xylenes, Total MONITORING AND REPORTING — 10 mg/L 2022 Resolved
DICHLOROMETHANE MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
o-Dichlorobenzene MONITORING AND REPORTING — 0.6 mg/L 2022 Resolved
p-Dichlorobenzene MONITORING AND REPORTING — 0.075 mg/L 2022 Resolved
Vinyl chloride MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
1,1-Dichloroethylene MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
trans-1,2-Dichloroethylene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
1,2-Dichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,1-Trichloroethane MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Carbon tetrachloride MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,2-Dichloropropane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Trichloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
1,1,2-Trichloroethane MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Tetrachloroethylene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
CHLOROBENZENE MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Benzene MONITORING AND REPORTING — 0.005 mg/L 2022 Resolved
Toluene MONITORING AND REPORTING — 1 mg/L 2022 Resolved
Ethylbenzene MONITORING AND REPORTING — 0.7 mg/L 2022 Resolved
Styrene MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Endrin MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2022 Resolved
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2022 Resolved
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Diquat MONITORING AND REPORTING — 0.02 mg/L 2022 Resolved
Endothall MONITORING AND REPORTING — 0.1 mg/L 2022 Resolved
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2022 Resolved
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2022 Resolved
Simazine MONITORING AND REPORTING — 0.004 mg/L 2022 Resolved
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2022 Resolved
Picloram MONITORING AND REPORTING — 0.5 mg/L 2022 Resolved
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2022 Resolved
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2022 Resolved
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2022 Resolved
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2022 Resolved
LASSO MONITORING AND REPORTING — — 2022 Resolved
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2022 Resolved
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2022 Resolved
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2022 Resolved
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2022 Resolved
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2022 Resolved
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2022 Resolved
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2022 Resolved
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2022 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2022 Resolved
Combined Radium (-226 and -228) MONITORING AND REPORTING — 5 pCi/L 2022 Resolved
Gross Alpha, Excl. Radon and U MONITORING AND REPORTING — 15 pCi/L 2022 Resolved
Nitrate MONITORING AND REPORTING — 10 mg/L 2022 Resolved
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2021 Resolved
Combined Uranium MCL EXCEEDANCE 42 UG/L 30 ug/L 2020 Resolved
Combined Uranium MCL EXCEEDANCE 57 UG/L 30 ug/L 2020 Resolved
Combined Uranium MCL EXCEEDANCE 59 UG/L 30 ug/L 2020 Resolved
Combined Uranium MCL EXCEEDANCE 62 UG/L 30 ug/L 2020 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2020–2022 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2020–2022 Resolved
Combined Uranium MCL EXCEEDANCE 62 UG/L 30 ug/L 2019 Resolved
Combined Uranium MCL EXCEEDANCE 61 UG/L 30 ug/L 2019 Resolved
Combined Uranium MCL EXCEEDANCE 60 UG/L 30 ug/L 2019 Resolved
Combined Uranium MCL EXCEEDANCE 60 UG/L 30 ug/L 2019 Resolved
Combined Uranium MCL EXCEEDANCE 61.5 UG/L 30 ug/L 2018 Resolved
Combined Uranium MCL EXCEEDANCE 62 UG/L 30 ug/L 2018 Resolved
Combined Uranium MCL EXCEEDANCE 63.5 UG/L 30 ug/L 2018 Resolved
Combined Uranium MCL EXCEEDANCE 62 UG/L 30 ug/L 2018 Resolved
Combined Uranium MCL EXCEEDANCE 55.5 UG/L 30 ug/L 2017 Resolved
Lead and Copper Rule MONITORING AND REPORTING — TT 2016 Resolved
Consumer Confidence Rule OTHER — — 2016 Resolved
Combined Uranium MCL EXCEEDANCE 55 UG/L 30 ug/L 2016 Resolved
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Chlorine MONITORING AND REPORTING — 4.0 mg/L 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
Combined Uranium MCL EXCEEDANCE 50 UG/L 30 ug/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

154 violations are on record since 2015, of which 20 were health-based. All have been resolved and none remain open.

About the Main Water System

Utility Sheridan Lake Wd
PWSID CO0131800
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 54
Service connections 64
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Sheridan Lake tap water safe to drink? ▼
No federal limit is exceeded on record. No violations are currently open. Lead is 0.60 ppb, 4% of the action level.
Does Sheridan Lake 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 Sheridan Lake? ▼
Sheridan Lake Wd (PWSID CO0131800). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-02-28. Inspectors recorded 1 significant deficiency.

What Should Sheridan Lake 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
Flush before drinking
If water has sat in pipes more than six hours, run the cold tap for two minutes before drinking or cooking.

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