Public water system · CO0151050
ActiveAvondale Wsd
At a glance
Avondale Wsd (PWSID CO0151050) is an active community water system in Pueblo County, Colorado. It reports serving 1,615 people through 484 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,615
Service connections
484
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Avondale Wsd compare with other water systems in Pueblo County?
By EPA's size categories, Avondale Wsd is a small system (501 to 3,300 people). Pueblo County has 27 active public water systems, and Avondale Wsd is the 6th-largest of them by population served. Its population served is well below the county average of 6,191 people per system, and accounts for 1% of the 167,168 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active community water system reports serving 6,703 people, so Avondale Wsd is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Colorado has 1,068 active community water systems, 48% of the state's 2,207 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,437 Colorado systems (65%) list groundwater as their primary source.
Who owns and regulates Avondale Wsd?
EPA lists Avondale Wsd as owned by a local government. The CO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 9 of the 27 active systems in Pueblo County (33%) are also owned by a local government.
Does Avondale Wsd have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2019. The violations listed here began between October 2007 and January 2019. By type: 9 monitoring and reporting, 1 required treatment not met, 1 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminants or rules involved are Total trihalomethanes (TTHM), Haloacetic acids (HAA5), Surface Water Treatment Rule and Revised Total Coliform Rule. EPA lists 12 as resolved. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-07-02 | Required treatment not metFailure to Filter (SWTR) · code 42 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2017-09-05 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorobenzenecode 2274 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2010-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Berylliumcode 1075 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Avondale Wsd: frequently asked questions
Who runs Avondale Wsd?
Avondale Wsd (PWSID CO0151050) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Avondale Wsd serve?
Avondale Wsd reports serving 1,615 people through 484 service connections in Pueblo County, Colorado.
Where does Avondale Wsd get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Avondale Wsd have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2019. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Avondale Wsd's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in January 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Avondale Wsd's water quality report?
As a community water system, Avondale Wsd must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Pueblo County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Pueblo Board of Ww | Pueblo | 114,070 | Community | Surface water |
| Pueblo West Md | Pueblo | 30,000 | Community | Surface water |
| St Charles Mesa Wd | Pueblo | 9,690 | Community | Surface water |
| Chemical Materials Activity West | Pueblo | 3,000 | Non-transient non-community | Groundwater |
| Colorado City Md | Pueblo | 2,755 | Community | Surface water |
| Circle K No 4062 | Pueblo | 756 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Avondale Wsd, PWSID CO0151050, Colorado”, https://aquacensus.com/water-systems/colorado/avondale-wsd-co0151050 (data as of October 1, 2026).