Water Quality: Greeley, CO
8 water systems • 141,047 people served
Multiple Health ViolationsWater Quality Summary
Greeley is served by 8 public water systems with a combined service population of 141,047 people, and has 106 EPA Safe Drinking Water Act violations on record. Critically, 19 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Greeley's violation count is 22% below the national average for Colorado. Contaminants associated with violations include Chlorine, Chlorine Dioxide, Disinfection Byproducts, E. coli, Fecal Coliform.
Contaminants Found
Eye and nose irritation at high levels; long-term exposure above the MCL may cause liver and kidney damage.
Common source: Water treatment disinfectant added to kill harmful microorganisms
EPA limit: 4.0 mg/L (MRDL — Maximum Residual Disinfectant Level)
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Indicates direct fecal contamination; associated with diarrhea, cramps, nausea, and potential severe illness.
Common source: Human and animal fecal waste
EPA limit: Zero tolerance (any positive triggers violations)
Water Systems Serving Greeley
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| GREELEY CITY OF | CO0162321 | Surface Water | 132,310 | 15 |
| CENTRAL WELD CNTY WD | CO0162122 | Surface Water | 7,662 | 2 |
| WOODLANDS EAST | CO0162852 | Surface Water | 350 | 0 |
| GREELEY MOBILE MANOR | CO0162326 | Surface Water | 180 | 0 |
| GREEN ACRES MOBILE HOME PARK | CO0162327 | Surface Water | 180 | 0 |
| SANS SOUCI MHP | CO0107702 | Surface Water | 150 | 89 |
| PARADISE VILLAGE COOP MOBILE HOME PARK | CO0162601 | Surface Water | 140 | 0 |
| LMP COOP MHP | CO0107483 | Surface Water | 75 | 0 |
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.