Public water system · CO0118076
ActiveStonegate Md
At a glance
Stonegate Md (PWSID CO0118076) is an active community water system in Douglas County, Colorado. It reports serving 15,295 people through 4,093 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
15,295
Service connections
4,093
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Stonegate Md compare with other water systems in Douglas County?
By EPA's size categories, Stonegate Md is a large system (10,001 to 100,000 people). Douglas County has 74 active public water systems, and Stonegate Md is the 5th-largest of them by population served. Its population served is about 169% above the county average of 5,694 people per system, and accounts for 3.6% 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 Stonegate Md is about 128% above 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 Stonegate Md?
EPA lists Stonegate Md 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 Stonegate Md 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 2020. The violations listed here began between April 2008 and July 2020. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (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 |
|---|---|---|---|---|
| 2020-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2020-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2017-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Oxamylcode 2036 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endrincode 2005 | 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.
Stonegate Md: frequently asked questions
Who runs Stonegate Md?
Stonegate Md (PWSID CO0118076) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Stonegate Md serve?
Stonegate Md reports serving 15,295 people through 4,093 service connections in Douglas County, Colorado.
Where does Stonegate Md 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 Stonegate Md 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 2020. 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 Stonegate Md'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 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Stonegate Md's water quality report?
As a community water system, Stonegate Md 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 |
| Roxborough Wsd | Douglas | 13,765 | Community | Surface water |
| Pinery Wwd | Douglas | 12,901 | 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, “Stonegate Md, PWSID CO0118076, Colorado”, https://aquacensus.com/water-systems/colorado/stonegate-md-co0118076 (data as of October 1, 2026).