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Community Water System · PWS CO0151050

Avondale WSD

Pueblo, Colorado 81003 - drinking water served from groundwater sources to 1,615 people, tracked in EPA SDWIS and UCMR5.

1,615
People served
65
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 65 drinking-water violations at Avondale WSD, 12% of them health-based - below the Colorado per-system average.

65
Total EPA violations on record
12%
Health-based (MCL / treatment failure)
1,615
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Avondale WSD

Avondale WSD is a local-owned community water system that delivers drinking water to 1,615 residents in Pueblo, Colorado (Pueblo County) through 484 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 65 total violations for this system , of which 8 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 53 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

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

Avondale WSD's 65 violations sit below 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
1,615
Total Violations
65
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
484
County
Pueblo
School/Daycare
No
MCL Violations
3
Monitoring Violations
53
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 6 2007
Surface Water Treatment Rule TT 5 2018
Revised Total Coliform Rule Other 4 2017
Fluoride MR 3 2007
Mercury MR 3 2007
Beryllium, Total MR 3 2007
Selenium MR 3 2007
Coliform (TCR) MCL 3 2010
TTHM MR 3 2019
Total Haloacetic Acids (HAA5) MR 3 2019
Hexachlorocyclopentadiene MR 3 2017
HEXACHLOROBENZENE MR 3 2017
Chromium MR 3 2007
Cadmium MR 3 2007
Nickel MR 3 2007
Antimony, Total MR 3 2007
Barium MR 3 2007
Arsenic MR 3 2007
Thallium, Total MR 3 2007
Coliform (TCR) MR 2 1993

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 Avondale WSD.

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 CO0151050 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 Avondale WSD 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
2019 TTHM MR 3 SDWIS / CO0151050 / 2950
2019 Total Haloacetic Acids (HAA5) MR 3 SDWIS / CO0151050 / 2456
2018 Surface Water Treatment Rule TT 5 SDWIS / CO0151050 / 0200
2017 Revised Total Coliform Rule Other 4 SDWIS / CO0151050 / 8000
2017 Hexachlorocyclopentadiene MR 3 SDWIS / CO0151050 / 2042
2017 HEXACHLOROBENZENE MR 3 SDWIS / CO0151050 / 2274
2010 Coliform (TCR) MCL 3 SDWIS / CO0151050 / 3100
2007 Nitrate MR 6 SDWIS / CO0151050 / 1040
2007 Fluoride MR 3 SDWIS / CO0151050 / 1025
2007 Mercury MR 3 SDWIS / CO0151050 / 1035
2007 Beryllium, Total MR 3 SDWIS / CO0151050 / 1075
2007 Selenium MR 3 SDWIS / CO0151050 / 1045
2007 Chromium MR 3 SDWIS / CO0151050 / 1020
2007 Cadmium MR 3 SDWIS / CO0151050 / 1015
2007 Nickel MR 3 SDWIS / CO0151050 / 1036

How Avondale WSD Compares

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

Metric Avondale WSD Colorado avg Federal benchmark
Total violations 65 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 1,615 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 Avondale WSD water safe to drink? ▼
Avondale WSD (PWS ID: CO0151050) has 65 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,615 people using Groundwater sources.
How many people does Avondale WSD serve? ▼
Avondale WSD serves 1,615 people in Pueblo, Colorado. It is a Local-owned system using Groundwater water sources with 484 service connections.
What type of violations does Avondale WSD have? ▼
Avondale WSD has 65 total violations: 8 health-based violations (MCL exceedances or treatment failures), 53 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Avondale WSD water? ▼
No PFAS testing data is available for Avondale WSD under the EPA's UCMR5 monitoring program.
What water source does Avondale WSD use? ▼
Avondale WSD 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.