Water Quality: Kennewick, WA
14 water systems • 122,548 people served
Multiple Health ViolationsWater Quality Summary
Kennewick is served by 14 public water systems with a combined service population of 122,548 people, and has 670 EPA Safe Drinking Water Act violations on record. Critically, 83 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Kennewick's violation count is 313% above the national average for Washington. Contaminants associated with violations include Barium, Selenium, TTHM, Total Haloacetic Acids (HAA5).
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Hair loss, nail brittleness, and nervous system damage at elevated concentrations.
Common source: Natural geological deposits, mining discharges, oil refinery waste
EPA limit: 0.05 mg/L (50 ppb)
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 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 Kennewick
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| KENNEWICK CITY OF | WA5338100 | Surface Water | 114,468 | 18 |
| BADGER MOUNTAIN IRRIGATION DISTRICT | WA5322617 | Surface Water | 2,331 | 273 |
| SUMMIT VIEW WATER SYSTEM | WA5303303 | Groundwater | 1,869 | 124 |
| BC WATER CO | WA53AA373 | Groundwater | 1,262 | 114 |
| Community Sewer and Water District | WA5305966 | Groundwater | 1,200 | 3 |
| WHITE BLUFF WATER ASSOCIATION | WA5396100 | Groundwater | 386 | 41 |
| HOMESTEAD MANUFACTURED HOUSING | WA5318180 | Groundwater | 300 | 23 |
| TRI-CITY WATER DISTRICT #45 | WA5389400 | Groundwater | 300 | 1 |
| PASCO HEIGHTS DOMESTIC WATER ASSN | WA5366350 | Groundwater | 135 | 2 |
| SUNDANCE IMPROVEMENT ASSOCIATION | WA5385209 | Groundwater | 100 | 38 |
| EATON PARK SUBDIVISION | WA5322285 | Groundwater | 70 | 11 |
| GOODNIGHT WATER SYSTEM | WA5303414 | Groundwater | 47 | 7 |
| BADGER CANYON WATER ASSN | WA5300604 | Groundwater | 40 | 1 |
| GOOD NEIGHBORS WATER ASSN | WA5376468 | Groundwater | 40 | 14 |
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 Washington
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.