PlainWater
Counties → Colorado

Adams County, Colorado

Water Systems
86
Population Served
711,442
Total Violations
11,205
474 health-based
PFAS Detected
7
of 7 tested

Violation Analysis

86.0%
Systems with Violations
130.3
Avg Violations per System
4.2%
Health-Based Violations

Water Source Types

SW
32 systems (37%)
GW
18 systems (21%)

PFAS Contamination

7
Systems Tested
7
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Adams Colorado water systems by violation status, EPA SDWIS records.

No violations on record (7) One or more violations (43)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Thornton City Of 226,465 36 Detected
Westminster City Of 202,078 18 Clean
South Adams County WSD 74,341 0 Detected
Brighton City Of 56,304 89 Detected
Northglenn City Of 48,927 7 Clean
Crestview WSD 23,756 0 -
North Washington Street WSD 14,500 6 -
Federal Heights City Of 11,678 4 Clean
Todd Creek Village MD 7,202 68 Detected
Bennett Town Of 4,400 62 -
Wikiup MHP 2,500 161 -
North Pecos WSD 2,500 0 -
Eastern Adams Co MD 2,485 12 -
Strasburg WSD 2,050 64 -
Kimberly Hills MHP 2,005 49 -
Pine Lakes Ranch 1,905 14 -
Friendly Village of Aurora MHP 1,786 0 -
Woodland Hills Mhc 1,740 8 -
Hillcrest Village MHP 1,505 51 -
Eastgate Village Manufactured Homes 1,500 22 -
Redwood Estates 1,500 0 -
The Grove at Alta Ridge 1,300 53 -
Greatrock North WSD 1,250 89 -
Denver Cascade MHP 1,200 16 -
Holiday Hills Village 1,190 1 -
Casa Estates MHP 1,117 6 -
Friendly Village of the Rockies 1,046 11 -
Adams County Parks 868 519 -
Countryside Village of Denver 863 31 -
Mile High WC 700 102 -
Lamplighter MHP 651 9 -
Barr Lake State Park 609 46 -
Watkins Square 515 61 -
Franklin Mobile Home Park 513 32 -
Belleview Christian College 460 215 -
Mountain View Fellowship 447 3 -
Avilla Eastlake 410 76 -
HI Land Acres WSD 350 18 -
Green Acres MHP 325 89 -
Mountain View Wua 320 57 -
Chaparral Village MHP 303 4 -
Thornton Estates 300 2 -
Cavanaugh Hills WS 286 208 -
Hazeltine Heights Water 261 286 -
Garden Meadows 250 0 -
Pioneer Mobile Home Park 250 0 -
Johnson Auto Plaza 247 17 -
Buffalo Run Golf Course 240 4 -
Riverdale Peaks II MD 209 26 -
Mile High Mobile Home Park 209 12 -

Other Counties in Colorado

Denver County
5 systems · 1,312,794 served · 487 violations
Arapahoe County
40 systems · 864,434 served · 5,553 violations
El Paso County
140 systems · 757,938 served · 21,020 violations
Jefferson County
113 systems · 577,729 served · 5,182 violations
Larimer County
136 systems · 519,497 served · 9,218 violations
Boulder County
82 systems · 428,472 served · 7,231 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Adams County? ▼
Adams County has 11,205 total drinking water violations across 86 water systems, of which 474 are health-based violations. 86.0% of systems have at least one violation.
How many people get water from Adams County systems? ▼
Water systems in Adams County serve approximately 711,442 people through 86 public water systems.
Has PFAS been detected in Adams County water? ▼
Of 7 water systems tested for PFAS in Adams County, 7 had PFAS detected (100.0% detection rate).
What types of water sources supply Adams County? ▼
Water systems in Adams County use SW (32 systems), GW (18 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 4.2% of Adams County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.