Public water system · CO0130020
ActiveConsolidated Mutual Maple Grove
At a glance
Consolidated Mutual Maple Grove (PWSID CO0130020) is an active community water system in Jefferson County, Colorado. It reports serving 81,400 people through 22,654 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in December 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
81,400
Service connections
22,654
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Consolidated Mutual Maple Grove compare with other water systems in Jefferson County?
By EPA's size categories, Consolidated Mutual Maple Grove is a large system (10,001 to 100,000 people). Jefferson County has 112 active public water systems, and Consolidated Mutual Maple Grove is the 2nd-largest of them by population served. Its population served is about 16 times the county average of 5,159 people per system, and accounts for 14% of the 577,783 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 Consolidated Mutual Maple Grove is about 12 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 228 Colorado systems (10%) list surface water as their primary source.
Who owns and regulates Consolidated Mutual Maple Grove?
EPA lists Consolidated Mutual Maple Grove 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. 39 of the 112 active systems in Jefferson County (35%) are also owned by a local government.
Does Consolidated Mutual Maple Grove have drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in December 2016. The violations listed here began between July 2004 and December 2016. By type: 3 monitoring and reporting and 3 required treatment not met. The contaminant or rule involved most often is E. coli (3 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2016-12-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2016-11-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2005-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2004-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2004-07-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
All 6 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.
Consolidated Mutual Maple Grove: frequently asked questions
Who runs Consolidated Mutual Maple Grove?
Consolidated Mutual Maple Grove (PWSID CO0130020) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Consolidated Mutual Maple Grove serve?
Consolidated Mutual Maple Grove reports serving 81,400 people through 22,654 service connections in Jefferson County, Colorado.
Where does Consolidated Mutual Maple Grove get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Consolidated Mutual Maple Grove have any drinking water violations?
EPA's records list 6 violations for this system; 3 are health-based, and the most recent began in December 2016. 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 Consolidated Mutual Maple Grove'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 6 violations for this system; 3 are health-based, and the most recent began in December 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Consolidated Mutual Maple Grove's water quality report?
As a community water system, Consolidated Mutual Maple Grove 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 Jefferson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Arvada City of | Jefferson | 171,610 | Community | Surface water |
| Green Mountain Wsd | Jefferson | 49,400 | Community | Purchased surface water |
| Bancroft Clover Wsd | Jefferson | 44,000 | Community | Purchased surface water |
| Golden City of | Jefferson | 38,288 | Community | Surface water |
| Bear Creek Wsd | Jefferson | 30,000 | Community | Purchased surface water |
| Wheat Ridge Water District | Jefferson | 20,000 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Consolidated Mutual Maple Grove, PWSID CO0130020, Colorado”, https://aquacensus.com/water-systems/colorado/consolidated-mutual-maple-grove-co0130020 (data as of October 1, 2026).