Water Quality: Centennial, CO
10 water systems • 106,671 people served
Multiple Health ViolationsWater Quality Summary
Centennial is served by 10 public water systems with a combined service population of 106,671 people, and has 232 EPA Safe Drinking Water Act violations on record. Critically, 26 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Centennial's violation count is 70% above the national average for Colorado. Contaminants associated with violations include Total Organic Carbon.
Contaminants Found
Not a direct health risk but reacts with disinfectants to form carcinogenic byproducts such as trihalomethanes.
Common source: Decaying plant material, algae, soil organic matter in source water
EPA limit: Treatment technique (must reduce TOC based on source water level)
Water Systems Serving Centennial
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| SOUTHGATE WSD | CO0103721 | Surface Water | 55,000 | 0 |
| ARAPAHOE CNTY WWWA | CO0203002 | Groundwater | 31,000 | 169 |
| WILLOWS WD | CO0103100 | Surface Water | 19,000 | 0 |
| ELKHORN RANCH MD NO 1 | CO0120244 | Groundwater | 530 | 0 |
| APPLE & CHERRY RIDGE VILLAGE | CO0135119 | Surface Water | 350 | 1 |
| THE ASPENS MOBILE HOME VILLAGE | CO0119122 | Surface Water | 318 | 3 |
| CHAPARRAL VILLAGE MHP | CO0101078 | Surface Water | 303 | 1 |
| MEADOWLARK MOBILE HOME PARK | CO0135505 | Surface Water | 125 | 1 |
| MOUNTAIN SHADOWS MOBILE ESTATES | CO0151350 | Groundwater | 45 | 29 |
| JOINT WATER PURIFICATION PLANT | CO0103418 | Groundwater | 0 | 28 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Colorado
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.