Water Quality: Garden Valley, ID
8 water systems • 1,081 people served
Multiple Health ViolationsWater Quality Summary
Garden Valley is served by 8 public water systems with a combined service population of 1,081 people, and has 159 EPA Safe Drinking Water Act violations on record. Critically, 52 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Garden Valley's violation count is 20% above the national average for Idaho. Contaminants associated with violations include Chlorine Dioxide, Disinfection Byproducts, E. coli, Gross Alpha, Lead.
Contaminants Found
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)
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Causes neurological damage, developmental delays in children, and kidney damage in adults even at low exposure levels.
Common source: Old plumbing pipes, lead solder, brass fixtures
EPA limit: Action Level: 0.015 mg/L (15 ppb)
Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Water Systems Serving Garden Valley
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MOUNTAIN VIEW WATER AND ROAD ASSN | ID4080031 | Groundwater | 305 | 29 |
| CASTLE MOUNTAIN CREEKS OWNERS ASSN | ID4080007 | Surface Water | 250 | 66 |
| SCRIVER WOODS HOMEOWNERS ASSN | ID4080034 | Groundwater | 150 | 7 |
| VALLEY HI ESTATES | ID4080051 | Groundwater | 140 | 3 |
| MOUNTAIN SHADOWS HOA INC. | ID4080100 | Groundwater | 89 | 19 |
| GARDEN VALLEY RANCHETTES HOMEOWNERS | ID4080018 | Groundwater | 78 | 31 |
| SHILO RANCH ESTATES | ID4080042 | Groundwater | 44 | 1 |
| SOUTHFORK LANDING INC | ID4080117 | Groundwater | 25 | 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.