PlainWater
Counties → Colorado

Arapahoe County, Colorado

Water Systems
40
Population Served
864,434
Total Violations
5,553
199 health-based
PFAS Detected
5
of 5 tested

Violation Analysis

75.0%
Systems with Violations
138.8
Avg Violations per System
3.6%
Health-Based Violations

Water Source Types

SW
20 systems (50%)
GW
20 systems (50%)

PFAS Contamination

5
Systems Tested
5
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

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

No violations on record (10) One or more violations (30)

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
Aurora City Of 533,407 18 Detected
East Cherry Creek Valley WSD 66,130 1,783 Detected
Englewood City Of 57,332 58 Detected
Southgate WSD 55,000 0 -
Southwest Metropolitan WSD 48,648 0 -
Arapahoe Cnty Wwwa 31,000 521 Detected
Platte Canyon WSD 19,485 0 -
Willows WD 19,000 2 -
Cherry Creek Village WD 9,215 0 -
Inverness WSD 8,140 154 Detected
Glendale City Of 4,400 3 -
Rangeview MD 2,487 207 -
Deer Trail Town Of 1,648 444 -
Foxridge Farms MHP 1,440 170 -
Byers WSD 1,000 26 -
Bow Mar WSD 899 0 -
Columbine Lakes HOA 843 4 -
The Meadows 758 1 -
Woodshire East Mobile Home Park Ltd 751 3 -
Circle K No 4054 500 18 -
Arapahoe Park Horsetrack 482 14 -
Lds Strasburg 231 9 -
East Valley MD 230 39 -
Appogee Kazmira LLC 200 12 -
Travois HOA 175 858 -
Stage Run HOA 150 97 -
Cedar Village MHP 130 0 -
Meadowood Village MHP 125 10 -
Sierra Bonita Estates 122 6 -
Country Gardens MHP 115 91 -
Country Homes Land Co 100 0 -
Golden Gun Club 58 0 -
May Farms WS and Entertainment Center 57 0 -
Western Metals Recycling 45 264 -
Rolling Plains Estate 40 386 -
Raleigh House 35 6 -
Eastern Service Center 30 63 -
Galbraith Estates 26 202 -
Joint Water Purification Plant 0 84 -
Wise Project 0 0 -

Other Counties in Colorado

Denver County
5 systems · 1,312,794 served · 487 violations
El Paso County
140 systems · 757,938 served · 21,020 violations
Adams County
86 systems · 711,442 served · 11,205 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 Arapahoe County? ▼
Arapahoe County has 5,553 total drinking water violations across 40 water systems, of which 199 are health-based violations. 75.0% of systems have at least one violation.
How many people get water from Arapahoe County systems? ▼
Water systems in Arapahoe County serve approximately 864,434 people through 40 public water systems.
Has PFAS been detected in Arapahoe County water? ▼
Of 5 water systems tested for PFAS in Arapahoe County, 5 had PFAS detected (100.0% detection rate).
What types of water sources supply Arapahoe County? ▼
Water systems in Arapahoe County use SW (20 systems), GW (20 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. 3.6% of Arapahoe 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.