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Community Water System · PWS CO0154510

Milner Park

Clark, Colorado 80428 - drinking water served from groundwater sources to 100 people, tracked in EPA SDWIS and UCMR5.

100
People served
198
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 198 drinking-water violations at Milner Park, 6% of them health-based - above the Colorado per-system average.

198
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
100
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Milner Park

Milner Park is a private-owned community water system that delivers drinking water to 100 residents in Clark, Colorado (Routt County) through 42 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 198 total violations for this system , of which 12 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 183 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 15 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Colorado, EPA tracks 2,193 public water systems serving 7,473,456 people, with 238,796 cumulative violations and 30,589 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 108.9 violations. Statewide, 98 of 163 UCMR5-tested systems have reported PFAS detections (60.1%).

Milner Park's 198 violations sit above the Colorado average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
100
Total Violations
198
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
42
County
Routt
School/Daycare
No
MCL Violations
8
Monitoring Violations
183
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 15 2003
Coliform (TCR) MCL 7 2006
Nitrate MR 6 2004
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 2019
TTHM MR 3 2020
Total Haloacetic Acids (HAA5) MR 3 2020
Arsenic MR 3 2020
Barium MR 3 2020
Nickel MR 3 2020
Beryllium, Total MR 3 2020
Antimony, Total MR 3 2020
Thallium, Total MR 3 2020
o-Dichlorobenzene MR 3 2020
p-Dichlorobenzene MR 3 2020
Vinyl chloride MR 3 2020
1,1-Dichloroethylene MR 3 2020
1,2-Dichloroethane MR 3 2020
1,1,1-Trichloroethane MR 3 2020
Carbon tetrachloride MR 3 2020
1,2-Dichloropropane MR 3 2020
Trichloroethylene MR 3 2020
1,1,2-Trichloroethane MR 3 2020
Tetrachloroethylene MR 3 2020
CHLOROBENZENE MR 3 2020
Benzene MR 3 2020
Toluene MR 3 2020
Styrene MR 3 2020
Chlordane MR 3 2020
Total Polychlorinated Biphenyls (PCB) MR 3 2020
Simazine MR 3 2020

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Milner Park.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CO0154510 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Colorado Drinking Water Authority

Colorado Department of Public Health and Environment, Water Quality Control is the primacy agency that licenses and inspects Milner Park under EPA-delegated authority.

Open CO regulator portal

Source: Colorado Department of Public Health and Environment, Water Quality Control

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2022 Lead and Copper Rule MR 3 SDWIS / CO0154510 / 5000
2020 TTHM MR 3 SDWIS / CO0154510 / 2950
2020 Total Haloacetic Acids (HAA5) MR 3 SDWIS / CO0154510 / 2456
2020 Arsenic MR 3 SDWIS / CO0154510 / 1005
2020 Barium MR 3 SDWIS / CO0154510 / 1010
2020 Nickel MR 3 SDWIS / CO0154510 / 1036
2020 Beryllium, Total MR 3 SDWIS / CO0154510 / 1075
2020 Antimony, Total MR 3 SDWIS / CO0154510 / 1074
2020 Thallium, Total MR 3 SDWIS / CO0154510 / 1085
2020 o-Dichlorobenzene MR 3 SDWIS / CO0154510 / 2968
2020 p-Dichlorobenzene MR 3 SDWIS / CO0154510 / 2969
2020 Vinyl chloride MR 3 SDWIS / CO0154510 / 2976
2020 1,1-Dichloroethylene MR 3 SDWIS / CO0154510 / 2977
2020 1,2-Dichloroethane MR 3 SDWIS / CO0154510 / 2980
2020 1,1,1-Trichloroethane MR 3 SDWIS / CO0154510 / 2981

How Milner Park Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Milner Park Colorado avg Federal benchmark
Total violations 198 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 13.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 100 3,408 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,193 regulated public water systems in Colorado.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Milner Park water safe to drink? ▼
Milner Park (PWS ID: CO0154510) has 198 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 100 people using Groundwater sources.
How many people does Milner Park serve? ▼
Milner Park serves 100 people in Clark, Colorado. It is a Private-owned system using Groundwater water sources with 42 service connections.
What type of violations does Milner Park have? ▼
Milner Park has 198 total violations: 12 health-based violations (MCL exceedances or treatment failures), 183 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Milner Park water? ▼
No PFAS testing data is available for Milner Park under the EPA's UCMR5 monitoring program.
What water source does Milner Park use? ▼
Milner Park uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.