Public water system · CO0203002
ActiveArapahoe Cnty Wwwa
At a glance
Arapahoe Cnty Wwwa (PWSID CO0203002) is an active community water system in Arapahoe County, Colorado. It reports serving 31,000 people through 3,951 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
31,000
Service connections
3,951
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Arapahoe Cnty Wwwa compare with other water systems in Arapahoe County?
By EPA's size categories, Arapahoe Cnty Wwwa is a large system (10,001 to 100,000 people). Arapahoe County has 39 active public water systems, and Arapahoe Cnty Wwwa is the 6th-largest of them by population served. Its population served is about 40% above the county average of 22,146 people per system, and accounts for 3.6% of the 863,682 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 Arapahoe Cnty Wwwa is about 4.6 times 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 Arapahoe Cnty Wwwa?
EPA lists Arapahoe Cnty Wwwa as privately owned. 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. 22 of the 39 active systems in Arapahoe County (56%) are also privately owned.
Does Arapahoe Cnty Wwwa have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2019. The violations listed here began between January 2017 and July 2019. By type: 11 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Di(2-ethylhexyl) adipate (2 of them). 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 |
|---|---|---|---|---|
| 2019-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Polychlorinated biphenyls (PCBs), totalcode 2383 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Polychlorinated biphenyls (PCBs), totalcode 2383 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | 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.
Arapahoe Cnty Wwwa: frequently asked questions
Who runs Arapahoe Cnty Wwwa?
Arapahoe Cnty Wwwa (PWSID CO0203002) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Arapahoe Cnty Wwwa serve?
Arapahoe Cnty Wwwa reports serving 31,000 people through 3,951 service connections in Arapahoe County, Colorado.
Where does Arapahoe Cnty Wwwa 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 Arapahoe Cnty Wwwa have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 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 Arapahoe Cnty Wwwa'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, none is health-based, and the most recent began in July 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 Arapahoe Cnty Wwwa's water quality report?
As a community water system, Arapahoe Cnty Wwwa 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 Arapahoe County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aurora City of | Arapahoe | 533,407 | Community | Surface water |
| East Cherry Creek Valley Wsd | Arapahoe | 66,130 | Community | Purchased surface water |
| Englewood City of | Arapahoe | 57,332 | Community | Surface water |
| Southgate Wsd | Arapahoe | 55,000 | Community | Purchased surface water |
| Southwest Metropolitan Wsd | Arapahoe | 48,648 | Community | Purchased surface water |
| Platte Canyon Wsd | Arapahoe | 19,485 | Community | Purchased surface water |
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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, “Arapahoe Cnty Wwwa, PWSID CO0203002, Colorado”, https://aquacensus.com/water-systems/colorado/arapahoe-cnty-wwwa-co0203002 (data as of October 1, 2026).