Public water system · CO0118070
ActiveRoxborough Nw Douglas County
At a glance
Roxborough Nw Douglas County (PWSID CO0118070) is an active community water system in Douglas County, Colorado. It reports serving 860 people through 184 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2017.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
860
Service connections
184
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Roxborough Nw Douglas County compare with other water systems in Douglas County?
By EPA's size categories, Roxborough Nw Douglas County is a small system (501 to 3,300 people). 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 0.2% 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 Roxborough Nw Douglas County 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 Roxborough Nw Douglas County?
EPA lists Roxborough Nw Douglas County 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 Roxborough Nw Douglas County have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2017. The violations listed here began between October 2017 and October 2017. By type: 2 monitoring and reporting. The contaminants or rules involved are Haloacetic acids (HAA5) and Total trihalomethanes (TTHM). EPA lists 2 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 |
|---|---|---|---|---|
| 2017-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
All 2 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.
Roxborough Nw Douglas County: frequently asked questions
Who runs Roxborough Nw Douglas County?
Roxborough Nw Douglas County (PWSID CO0118070) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Roxborough Nw Douglas County serve?
Roxborough Nw Douglas County reports serving 860 people through 184 service connections in Douglas County, Colorado.
Where does Roxborough Nw Douglas County 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 Roxborough Nw Douglas County have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in October 2017. 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 Roxborough Nw Douglas County'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 2 violations for this system; none is health-based, and the most recent began in October 2017. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Roxborough Nw Douglas County's water quality report?
As a community water system, Roxborough Nw Douglas County 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, “Roxborough Nw Douglas County, PWSID CO0118070, Colorado”, https://aquacensus.com/water-systems/colorado/roxborough-nw-douglas-county-co0118070 (data as of October 1, 2026).