Public water system · CO0101234
ActiveEastern Adams Co Md
At a glance
Eastern Adams Co Md (PWSID CO0101234) is an active community water system in Adams County, Colorado. It reports serving 2,485 people through 865 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,485
Service connections
865
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Eastern Adams Co Md compare with other water systems in Adams County?
By EPA's size categories, Eastern Adams Co Md is a small system (501 to 3,300 people). Adams County has 82 active public water systems. Its population served is well below the county average of 8,669 people per system, and accounts for 0.3% of the 710,822 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 Eastern Adams Co Md is about 63% 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 Eastern Adams Co Md?
EPA lists Eastern Adams Co 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. 19 of the 82 active systems in Adams County (23%) are also owned by a local government.
Does Eastern Adams Co Md have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2018. The violations listed here began between July 2018 and October 2018. By type: 3 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Total trihalomethanes (TTHM), Haloacetic acids (HAA5), Revised Total Coliform Rule and Chlorine. EPA lists 4 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 |
|---|---|---|---|---|
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
All 4 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.
Eastern Adams Co Md: frequently asked questions
Who runs Eastern Adams Co Md?
Eastern Adams Co Md (PWSID CO0101234) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Eastern Adams Co Md serve?
Eastern Adams Co Md reports serving 2,485 people through 865 service connections in Adams County, Colorado.
Where does Eastern Adams Co Md 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 Eastern Adams Co Md have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2018. 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 Eastern Adams Co 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. EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Eastern Adams Co Md's water quality report?
As a community water system, Eastern Adams Co 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 Adams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Thornton City of | Adams | 226,465 | Community | Surface water |
| Westminster City of | Adams | 202,078 | Community | Surface water |
| South Adams County Wsd | Adams | 75,559 | Community | Purchased surface water |
| Brighton City of | Adams | 56,304 | Community | Purchased surface water |
| Northglenn City of | Adams | 48,927 | Community | Surface water |
| Crestview Wsd | Adams | 23,756 | 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, “Eastern Adams Co Md, PWSID CO0101234, Colorado”, https://aquacensus.com/water-systems/colorado/eastern-adams-co-md-co0101234 (data as of October 1, 2026).