Water Quality: Meridian, ID
7 water systems • 148,669 people served
Multiple Health ViolationsWater Quality Summary
Meridian is served by 7 public water systems with a combined service population of 148,669 people, and has 84 EPA Safe Drinking Water Act violations on record. Critically, 25 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Meridian's violation count is 37% below the national average for Idaho. Contaminants associated with violations include Chlorine Dioxide, E. coli, HAA5, Haloacetic Acids, Stage 2 DBP.
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
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)
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)
Linked to increased cancer risk and potential reproductive and developmental effects with long-term exposure.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Meridian
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MERIDIAN WATER DEPT | ID4010097 | Groundwater | 147,340 | 17 |
| MEADOWS AT WEST MOUNTAIN | ID4430103 | Groundwater | 550 | 20 |
| ARROWROCK RANCH | ID4010247 | Groundwater | 250 | 1 |
| GREENHILLS ESTATES 3 | ID4010069 | Groundwater | 200 | 18 |
| TIMBERSTONE HOA | ID3140220 | Groundwater | 170 | 9 |
| TERRACE WATER CORP INC | ID4010036 | Groundwater | 84 | 2 |
| BITTERCREEK MEADOWS SUBDIVISION | ID4010200 | Groundwater | 75 | 17 |
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.