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Community Water System · PWS CO0162511

Milliken Town Of

Milliken, Colorado 80543 - drinking water served from surface water sources to 9,200 people, tracked in EPA SDWIS and UCMR5.

9,200
People served
331
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 331 drinking-water violations at Milliken Town Of - above the Colorado per-system average.

331
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
9,200
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Milliken Town Of

Milliken Town Of is a local-owned community water system that delivers drinking water to 9,200 residents in Milliken, Colorado (Weld County) through 3,132 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 331 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 327 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 13 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Milliken Town Of's 331 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
9,200
Total Violations
331
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
3,132
County
Weld
School/Daycare
No
MCL Violations
0
Monitoring Violations
327
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 13 2025
TTHM MR 12 2024
Total Haloacetic Acids (HAA5) MR 12 2024
Fluoride MR 11 2009
Nitrate MR 11 2009
Arsenic MR 10 2009
Antimony, Total MR 10 2009
Beryllium, Total MR 10 2009
Thallium, Total MR 10 2009
Selenium MR 10 2009
Cadmium MR 10 2009
Chromium MR 10 2009
Mercury MR 10 2009
Nickel MR 10 2009
Barium MR 10 2009
Coliform (TCR) MR 6 2008
Endrin MR 3 2009
BHC-GAMMA MR 3 2009
Diquat MR 3 2009
Endothall MR 3 2009
Picloram MR 3 2009
Dinoseb MR 3 2009
Aldicarb sulfone MR 3 2009
Atrazine MR 3 2009
LASSO MR 3 2009
2,4-D MR 3 2009
2,4,5-TP MR 3 2009
Benzo(a)pyrene MR 3 2009
Total Polychlorinated Biphenyls (PCB) MR 3 2009
Chlordane MR 3 2009

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 124 samples detected PFAS.

Contaminant Date Result MRL Status
NEtFOSAA 8/5/2025 <5.00 ppt 5.00 ppt Not Detected
PFTA 8/5/2025 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 8/5/2025 <6.00 ppt 6.00 ppt Not Detected
PFTrDA 8/5/2025 <7.00 ppt 7.00 ppt Not Detected
PFTrDA 8/5/2025 <7.00 ppt 7.00 ppt Not Detected
NMeFOSAA 8/5/2025 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 8/5/2025 <5.00 ppt 5.00 ppt Not Detected
PFTA 8/5/2025 <8.00 ppt 8.00 ppt Not Detected
PFOA 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFDA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFDoA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 8/27/2025 <2.00 ppt 2.00 ppt Not Detected
PFBS 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
PFHxA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFMBA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFNA 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFMPA 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFHpS 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/27/2025 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFBA 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
PFHxS 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/27/2025 <2.00 ppt 2.00 ppt Not Detected
PFDoA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFEESA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/27/2025 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/27/2025 <5.00 ppt 5.00 ppt Not Detected
PFMBA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFHxS 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFDA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFOS 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFNA 8/27/2025 <4.00 ppt 4.00 ppt Not Detected
PFHpA 8/27/2025 <3.00 ppt 3.00 ppt Not Detected
PFUnA 8/27/2025 <2.00 ppt 2.00 ppt Not Detected
8:2 FTS 8/27/2025 <5.00 ppt 5.00 ppt Not Detected

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 Milliken Town Of.

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 CO0162511 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 Milliken Town Of 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
2025 Lead and Copper Rule MR 13 SDWIS / CO0162511 / 5000
2024 TTHM MR 12 SDWIS / CO0162511 / 2950
2024 Total Haloacetic Acids (HAA5) MR 12 SDWIS / CO0162511 / 2456
2013 Consumer Confidence Rule Other 2 SDWIS / CO0162511 / 7000
2012 Chlorine MR 3 SDWIS / CO0162511 / 0999
2009 Fluoride MR 11 SDWIS / CO0162511 / 1025
2009 Nitrate MR 11 SDWIS / CO0162511 / 1040
2009 Arsenic MR 10 SDWIS / CO0162511 / 1005
2009 Antimony, Total MR 10 SDWIS / CO0162511 / 1074
2009 Beryllium, Total MR 10 SDWIS / CO0162511 / 1075
2009 Thallium, Total MR 10 SDWIS / CO0162511 / 1085
2009 Selenium MR 10 SDWIS / CO0162511 / 1045
2009 Cadmium MR 10 SDWIS / CO0162511 / 1015
2009 Chromium MR 10 SDWIS / CO0162511 / 1020
2009 Mercury MR 10 SDWIS / CO0162511 / 1035

How Milliken Town Of Compares

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

Metric Milliken Town Of Colorado avg Federal benchmark
Total violations 331 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 9,200 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 Milliken Town Of water safe to drink?
Milliken Town Of (PWS ID: CO0162511) has 331 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 9,200 people using Surface Water sources.
How many people does Milliken Town Of serve?
Milliken Town Of serves 9,200 people in Milliken, Colorado. It is a Local-owned system using Surface Water water sources with 3,132 service connections.
What type of violations does Milliken Town Of have?
Milliken Town Of has 331 total violations: 0 health-based violations (MCL exceedances or treatment failures), 327 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Milliken Town Of water?
No. Milliken Town Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Milliken Town Of use?
Milliken Town Of uses Surface Water 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.
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.