PlainWater
Counties → Colorado

Douglas County, Colorado

Water Systems
73
Population Served
417,473
Total Violations
7,411
497 health-based
PFAS Detected
12
of 13 tested

Violation Analysis

94.5%
Systems with Violations
101.5
Avg Violations per System
6.7%
Health-Based Violations

Water Source Types

GW
31 systems (42%)
SW
19 systems (26%)

PFAS Contamination

13
Systems Tested
12
PFAS Detected
92.3%
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

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

No violations on record (1) One or more violations (49)

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
Castle Rock Town Of 106,822 52 Detected
Highlands Ranch WSD 103,444 13 Detected
Parker WSD 75,949 466 Detected
Meridian MD 23,415 10 Clean
Stonegate MD 15,295 283 Detected
Roxborough WSD 13,765 27 Clean
Pinery Wwd 12,901 328 Detected
Castle Pines North MD 12,800 231 Detected
Sterling Ranch Cab 11,357 8 -
Cottonwood WSD 10,867 131 Detected
Northern Douglas County WSD 6,160 52 Detected
Castle Pines Village MD 5,656 173 Clean
Perry Park WSD 3,890 153 Clean
Consolidated Bell Mtn Ranch MD 1,000 4 -
Parker Evangelical Pres Church Pepc 950 17 -
Alta Convenience No 6104 906 17 -
Roxborough NW Douglas County 860 8 -
Sierra Middle School 750 246 -
Roxborough State Park 710 26 -
Journey Church 626 0 -
Clock Tower Center 560 5 Clean
Castleton Center 500 20 -
Thunderbird WSD 490 541 -
Franktown Elem School 365 239 -
Encompass Preschool 364 395 -
Castlewood Canyon State Park 359 38 -
Beverly Hills Mutual WC 325 87 -
Chatfield South WD 312 37 -
Creekside Bible Church 310 3 -
Silver State Baptist Youth Camp 306 28 -
Silver Heights WSD 301 34 -
Larkspur Town Of 275 143 -
Sanctuary Golf Course 240 6 -
Louviers WSD 238 242 -
Pine Lane Plaza 226 4 -
Stone Canyon Outdoor Edventures 221 484 -
Yogi Bears Jellystone Park Camp Resort 218 41 -
Sedalia WSD 215 551 -
YMCA Camp Shady Brook 208 89 -
Directv Broadcast Facility 200 13 -
Castle Park MHP 191 12 -
Deckers Resort 174 18 -
Pine Tree Plaza West 170 128 -
Ponderosa Retreat and Conference Ctr 167 46 -
Westcreek Lakes WD 165 218 -
Indian Creek Campground 158 26 -
Castle Rock Congre of Jehovahs Witnesses 145 27 -
Golf Club at Bear Dance The 134 7 -
Cornerstone Presbyterian Church 130 140 -
Douglas County Schools O and M East 126 105 -

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
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

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Douglas County? ▼
Douglas County has 7,411 total drinking water violations across 73 water systems, of which 497 are health-based violations. 94.5% of systems have at least one violation.
How many people get water from Douglas County systems? ▼
Water systems in Douglas County serve approximately 417,473 people through 73 public water systems.
Has PFAS been detected in Douglas County water? ▼
Of 13 water systems tested for PFAS in Douglas County, 12 had PFAS detected (92.3% detection rate).
What types of water sources supply Douglas County? ▼
Water systems in Douglas County use GW (31 systems), SW (19 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. 6.7% of Douglas 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.