Tapcensus

Water quality in Sterling Ranch, Colorado

Sterling Ranch is in Douglas County. 74 active public water systems serve the county; 39 had an EPA violation in the past three years.

Most likely your provider

Dominion Wsd CO0118021 · Community water system · Surface water purchased · Littleton
Serves 0 people Rules violated, past 3 years 0 Last sanitary survey Feb 13, 2026 Distance 0.1 mi

Your location is within the outer bounds of this system's EPA service area.

Other community water systems in Douglas County

28 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Chatfield South WD
312 0 1.7 mi
View Ridge Mutual WC
35 3 1.9 mi
Roxborough Wsd
13,765 0 2.1 mi
Louviers Wsd
238 3 2.5 mi
Sedalia Wsd
215 1 4.6 mi
Highlands Ranch Wsd
103,444 0 4.9 mi
Thunderbird Wsd
490 1 5.8 mi
Northern Douglas County Wsd
6,160 0 6.6 mi
Castle Pines North MD
12,800 1 8.1 mi
Castle Pines Village MD
5,656 1 8.7 mi
Beverly Hills Mutual WC
325 1 9.3 mi
Silver Heights Wsd
301 0 10.8 mi
Meridian MD
23,415 3 11.3 mi
Parker Wsd
75,949 4 13.3 mi
Stonegate MD
15,295 0 13.3 mi
Castle Rock Town of
110,298 1 13.4 mi
Cottonwood Wsd
10,867 7 14.5 mi
Sierra Vista HOA
120 0 15.9 mi
Pinery Wwd
12,901 1 16.2 mi
Consolidated Bell Mtn Ranch MD
1,162 1 16.2 mi
Perry Park Wsd
3,890 3 17.4 mi
Foxhill MD
123 0 17.7 mi
Larkspur Town of
275 4 19.9 mi
Westcreek Lakes WD
165 8 25.0 mi
Sterling Ranch Cab
11,501 2 —
All 29 community water systems in Douglas County
Non-community systems in Douglas County (45: schools, campgrounds, workplaces, restaurants)

These systems serve places you visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Highlands Ranch Law Enforcement Training
50 0 0
Roxborough State Park
710 1 0
Core Electric Cooperative
81 2 0
Sacred Heart Retreat Jesuits
67 1 0
Sanctuary Golf Course
240 1 0
Silver State Baptist Youth Camp
306 2 1
Journey Church
626 0 0
Sprucewood Inn
46 1 0
Canyons Community Church
47 0 0
Creekside Bible Church
Castle Rock
310 1 0
United Church of Christ Parker Hilltop
Parker
95 8 0
Cornerstone Presbyterian Church
130 0 0
Colo Agricultural Leadership Foundation
25 2 0
Pine Lane Plaza
226 0 0
Castle Rock Congre of Jehovahs Witnesses
145 2 1
Christlife Community Church
100 0 0
Spirit of Hope Lutheran Church
102 1 0
Sri Venkateswara Temple
50 1 1
Castlewood Community Preschool
125 9 0
Golf Club at Bear Dance the
134 0 0
Yogi Bears Jellystone Park Camp Resort
218 0 0
Parker Evangelical Pres Church Pepc
950 1 0
Adrianas Mexican Restaurant
66 0 0
Encompass Preschool
Parker
364 7 2
Castlewood Canyon State Park
359 0 0
YMCA Camp Shady Brook
208 2 0
Stone Canyon Outdoor Edventures
221 0 0
Ponderosa Retreat and Conference Ctr
167 1 0
Alta Convenience NO 6104
906 0 0
Sierra Middle School
750 1 0
Clock Tower Center
560 0 0
Castleton Center
500 0 0
Franktown Elem School
365 0 0
Directv Broadcast Facility
200 0 0
Deckers Resort
174 0 0
Pine Tree Plaza West
170 0 0
Indian Creek Campground
158 0 0
Douglas County Schools O and M East
126 0 0
Flat Rocks Campground
114 0 0
C and L Gas
75 0 0
North Rainbow Falls WC
69 2 0
Cherry Valley Elem School
60 3 0
Camp Colorado
40 0 0
E and C Precast Concrete INC
35 0 0
Cottonwood Riding Club
32 3 0
About this data

Water systems are matched to Douglas County, nearest to Sterling Ranch first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.

Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Colorado records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.