Water Quality: Post Falls, ID
12 water systems • 42,169 people served
Multiple Health ViolationsWater Quality Summary
Post Falls is served by 12 public water systems with a combined service population of 42,169 people, and has 512 EPA Safe Drinking Water Act violations on record. Critically, 4 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Post Falls's violation count is 285% above the national average for Idaho. Contaminants associated with violations include E. coli.
Contaminants Found
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)
Water Systems Serving Post Falls
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| POST FALLS CITY OF | ID1280147 | Groundwater | 20,285 | 408 |
| EAST GREENACRES IRRIGATION DIST | ID1280064 | Groundwater | 11,165 | 36 |
| ROSS POINT WATER DIST | ID1280163 | Groundwater | 8,965 | 0 |
| PINE VILLA PARK AND WATER ASSN | ID1280142 | Groundwater | 500 | 4 |
| ROYAL HIGHLAND WATER SYSTEM | ID1280164 | Groundwater | 275 | 2 |
| HAUSER LAKE HEIGHTS | ID1280289 | Groundwater | 257 | 9 |
| SAINT DOMINIC SCHOOL | ID1280247 | Groundwater | 228 | 23 |
| MCGUIRE ESTATES WATER USERS | ID1280118 | Groundwater | 158 | 5 |
| SOUTH RIVER WATER ASSN | ID1280155 | Groundwater | 150 | 4 |
| HIGHWAY 54 WATER ASSOCIATION, INC | ID1280221 | Groundwater | 100 | 10 |
| TRAILS END ESTATES | ID1280310 | Groundwater | 46 | 8 |
| HIDDEN HILL MOBILE HOME PARK | ID1280092 | Groundwater | 40 | 3 |
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 Idaho
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.