Public water system · CO0118175
ActiveChatfield South Wd
At a glance
Chatfield South Wd (PWSID CO0118175) is an active community water system in Douglas County, Colorado. It reports serving 312 people through 129 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; none is health-based, and the most recent began in July 2021.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
312
Service connections
129
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Chatfield South Wd compare with other water systems in Douglas County?
By EPA's size categories, Chatfield South Wd is a very small system (500 people or fewer). Douglas County has 74 active public water systems. Its population served is well below the county average of 5,694 people per system, and accounts for less than 0.1% of the 421,335 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 Chatfield South Wd 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 337 Colorado systems (15%) list purchased surface water as their primary source.
Who owns and regulates Chatfield South Wd?
EPA lists Chatfield South Wd 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. 25 of the 74 active systems in Douglas County (34%) are also owned by a local government.
Does Chatfield South Wd have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in July 2021. The violations listed here began between November 1999 and July 2021. By type: 9 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2011-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Chatfield South Wd: frequently asked questions
Who runs Chatfield South Wd?
Chatfield South Wd (PWSID CO0118175) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Chatfield South Wd serve?
Chatfield South Wd reports serving 312 people through 129 service connections in Douglas County, Colorado.
Where does Chatfield South Wd get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Chatfield South Wd have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in July 2021. 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 Chatfield South Wd'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. EPA's records list 11 violations for this system; none is health-based, and the most recent began in July 2021. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Chatfield South Wd's water quality report?
As a community water system, Chatfield South Wd 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 Douglas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Castle Rock Town of | Douglas | 110,298 | Community | Surface water |
| Highlands Ranch Wsd | Douglas | 103,444 | Community | Surface water |
| Parker Wsd | Douglas | 75,949 | Community | Surface water |
| Meridian Md | Douglas | 23,415 | Community | Purchased surface water |
| Stonegate Md | Douglas | 15,295 | Community | Purchased surface water |
| Roxborough Wsd | Douglas | 13,765 | Community | 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, “Chatfield South Wd, PWSID CO0118175, Colorado”, https://aquacensus.com/water-systems/colorado/chatfield-south-wd-co0118175 (data as of October 1, 2026).