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Community Water System · PWS CO0128900

Walsenburg City Of

Walsenburg, Colorado 81089 - drinking water served from surface water sources to 3,230 people, tracked in EPA SDWIS and UCMR5.

3,230
People served
260
EPA violations
135
Health-based
Untested
UCMR5 result

The verdict

EPA records 260 drinking-water violations at Walsenburg City Of, 52% of them health-based - above the Colorado per-system average.

260
Total EPA violations on record
52%
Health-based (MCL / treatment failure)
3,230
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Walsenburg City Of

Walsenburg City Of is a local-owned community water system that delivers drinking water to 3,230 residents in Walsenburg, Colorado (Huerfano County) through 1,928 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 260 total violations for this system , of which 135 (52%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 61 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 Interim Enhanced Surface Water Treatment Rule, recorded in 73 violations (TT, health-based). 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%).

Walsenburg City Of's 260 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
3,230
Total Violations
260
Health-Based Violations
135
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,928
County
Huerfano
School/Daycare
No
MCL Violations
16
Monitoring Violations
61
Treatment Tech Violations
119

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Interim Enhanced Surface Water Treatment Rule TT 73 2022
Public Notice Other 53 2025
Surface Water Treatment Rule TT 39 2018
Interim Enhanced Surface Water Treatment Rule MR 27 2020
TTHM MCL 16 2020
Surface Water Treatment Rule MR 9 2020
E. COLI MR 6 2018
TTHM MR 6 2025
Groundwater Rule TT 5 2015
Revised Total Coliform Rule Other 3 2020
Total Haloacetic Acids (HAA5) MR 3 2015
Lead and Copper Rule MR 3 2024
LEAD AND COPPER RULE REVISIONS TT 2 2024
LEAD AND COPPER RULE REVISIONS RPT 2 2024
Benzene MR 1 1989
Carbon tetrachloride MR 1 1989
1,1,1-Trichloroethane MR 1 1989
Trichloroethylene MR 1 1989
1,2-Dichloroethane MR 1 1989
1,1-Dichloroethylene MR 1 1989
p-Dichlorobenzene MR 1 1989

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 Walsenburg City 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 CO0128900 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 Walsenburg City 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 Public Notice Other 53 SDWIS / CO0128900 / 7500
2025 TTHM MR 6 SDWIS / CO0128900 / 2950
2024 Lead and Copper Rule MR 3 SDWIS / CO0128900 / 5000
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / CO0128900 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / CO0128900 / 5200
2022 Interim Enhanced Surface Water Treatment Rule TT 73 SDWIS / CO0128900 / 0300
2020 Interim Enhanced Surface Water Treatment Rule MR 27 SDWIS / CO0128900 / 0300
2020 TTHM MCL 16 SDWIS / CO0128900 / 2950
2020 Surface Water Treatment Rule MR 9 SDWIS / CO0128900 / 0200
2020 Revised Total Coliform Rule Other 3 SDWIS / CO0128900 / 8000
2018 Surface Water Treatment Rule TT 39 SDWIS / CO0128900 / 0200
2018 E. COLI MR 6 SDWIS / CO0128900 / 3014
2015 Groundwater Rule TT 5 SDWIS / CO0128900 / 0700
2015 Total Haloacetic Acids (HAA5) MR 3 SDWIS / CO0128900 / 2456
1989 Benzene MR 1 SDWIS / CO0128900 / 2990

How Walsenburg City Of Compares

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

Metric Walsenburg City Of Colorado avg Federal benchmark
Total violations 260 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 135 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 3,230 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 Walsenburg City Of water safe to drink? ▼
Walsenburg City Of (PWS ID: CO0128900) has 260 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,230 people using Surface Water sources.
How many people does Walsenburg City Of serve? ▼
Walsenburg City Of serves 3,230 people in Walsenburg, Colorado. It is a Local-owned system using Surface Water water sources with 1,928 service connections.
What type of violations does Walsenburg City Of have? ▼
Walsenburg City Of has 260 total violations: 135 health-based violations (MCL exceedances or treatment failures), 61 monitoring/reporting violations, and 119 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Walsenburg City Of water? ▼
No PFAS testing data is available for Walsenburg City Of under the EPA's UCMR5 monitoring program.
What water source does Walsenburg City Of use? ▼
Walsenburg City 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. 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.