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Community Water System · PWS CO0162255

Erie Town Of

Erie, Colorado 80516 - drinking water served from surface water sources to 40,061 people, tracked in EPA SDWIS and UCMR5.

40,061
People served
114
EPA violations
3
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 114 drinking-water violations at Erie Town Of, 3% of them health-based - above the Colorado per-system average.

114
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
40,061
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Erie Town Of

Erie Town Of is a local-owned community water system that delivers drinking water to 40,061 residents in Erie, Colorado (Boulder County) through 12,119 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 114 total violations for this system , of which 3 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 111 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is TTHM, recorded in 6 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%).

Erie Town Of's 114 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
40,061
Total Violations
114
Health-Based Violations
3
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
12,119
County
Boulder
School/Daycare
No
MCL Violations
3
Monitoring Violations
111
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
TTHM MR 6 2021
Total Haloacetic Acids (HAA5) MR 6 2021
Surface Water Treatment Rule MR 3 1993
Nitrite MR 3 2007
Endrin MR 3 2020
Methoxychlor MR 3 2020
Toxaphene MR 3 2020
Dalapon MR 3 2020
Diquat MR 3 2020
Picloram MR 3 2020
Dinoseb MR 3 2020
Hexachlorocyclopentadiene MR 3 2020
Aldicarb sulfone MR 3 2020
Carbofuran MR 3 2020
Aldicarb MR 3 2020
Atrazine MR 3 2020
LASSO MR 3 2020
Heptachlor epoxide MR 3 2020
2,4-D MR 3 2020
HEXACHLOROBENZENE MR 3 2020
Benzo(a)pyrene MR 3 2020
Pentachlorophenol MR 3 2020
1,2-DIBROMO-3-CHLOROPROPANE MR 3 2020
Chlordane MR 3 2020
Di(2-ethylhexyl) adipate MR 3 2020
ETHYLENE DIBROMIDE MR 3 2020
OXAMYL MR 3 2020
Heptachlor MR 3 2020
Di(2-ethylhexyl) phthalate MR 3 2020
Simazine MR 3 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.

Contaminant Date Result MRL Status
NFDHA 9/11/2024 <20.00 ppt 20.00 ppt Not Detected
HFPO-DA 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 9/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFPeA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFEESA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 9/11/2024 <4.00 ppt 4.00 ppt Not Detected
ADONA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 9/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFHpS 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 9/11/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFUnA 9/11/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFOS 9/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFBS 9/11/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 9/11/2024 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 9/11/2024 <7.00 ppt 7.00 ppt Not Detected
6:2 FTS 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
NEtFOSAA 9/11/2024 <5.00 ppt 5.00 ppt Not Detected
PFTA 9/11/2024 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 9/11/2024 <6.00 ppt 6.00 ppt Not Detected
PFBA 5/6/2024 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 5/6/2024 <5.00 ppt 5.00 ppt Not Detected
ADONA 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 5/6/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 5/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFUnA 5/6/2024 <2.00 ppt 2.00 ppt Not Detected
PFHxA 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 5/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFOS 5/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFDoA 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 5/6/2024 <4.00 ppt 4.00 ppt Not Detected
PFHxS 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpA 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 5/6/2024 <7.00 ppt 7.00 ppt Not Detected
PFOA 5/6/2024 <4.00 ppt 4.00 ppt Not Detected
4:2 FTS 5/6/2024 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 5/6/2024 <5.00 ppt 5.00 ppt Not Detected
PFTA 5/6/2024 <8.00 ppt 8.00 ppt Not Detected
PFHpS 5/6/2024 <3.00 ppt 3.00 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 Erie 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 CO0162255 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 Erie 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
2021 TTHM MR 6 SDWIS / CO0162255 / 2950
2021 Total Haloacetic Acids (HAA5) MR 6 SDWIS / CO0162255 / 2456
2020 Endrin MR 3 SDWIS / CO0162255 / 2005
2020 Methoxychlor MR 3 SDWIS / CO0162255 / 2015
2020 Toxaphene MR 3 SDWIS / CO0162255 / 2020
2020 Dalapon MR 3 SDWIS / CO0162255 / 2031
2020 Diquat MR 3 SDWIS / CO0162255 / 2032
2020 Picloram MR 3 SDWIS / CO0162255 / 2040
2020 Dinoseb MR 3 SDWIS / CO0162255 / 2041
2020 Hexachlorocyclopentadiene MR 3 SDWIS / CO0162255 / 2042
2020 Aldicarb sulfone MR 3 SDWIS / CO0162255 / 2044
2020 Carbofuran MR 3 SDWIS / CO0162255 / 2046
2020 Aldicarb MR 3 SDWIS / CO0162255 / 2047
2020 Atrazine MR 3 SDWIS / CO0162255 / 2050
2020 LASSO MR 3 SDWIS / CO0162255 / 2051

How Erie Town Of Compares

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

Metric Erie Town Of Colorado avg Federal benchmark
Total violations 114 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 40,061 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 Erie Town Of water safe to drink?
Erie Town Of (PWS ID: CO0162255) has 114 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40,061 people using Surface Water sources.
How many people does Erie Town Of serve?
Erie Town Of serves 40,061 people in Erie, Colorado. It is a Local-owned system using Surface Water water sources with 12,119 service connections.
What type of violations does Erie Town Of have?
Erie Town Of has 114 total violations: 3 health-based violations (MCL exceedances or treatment failures), 111 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Erie Town Of water?
No. Erie Town Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Erie Town Of use?
Erie 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.