Water Quality: Moses Lake, WA
33 water systems • 36,801 people served
Multiple Health ViolationsWater Quality Summary
Moses Lake is served by 33 public water systems with a combined service population of 36,801 people, and has 1,123 EPA Safe Drinking Water Act violations on record. Critically, 118 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Moses Lake's violation count is 593% above the national average for Washington. Contaminants associated with violations include E. coli, Selenium.
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)
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)
Water Systems Serving Moses Lake
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| MOSES LAKE CITY OF | WA5356300 | Groundwater | 32,428 | 289 |
| CASCADE VALLEY WATER DISTRICT | WA5311500 | Groundwater | 379 | 6 |
| GOLDEN PLAINS MHP #1 | WA5389060 | Groundwater | 360 | 42 |
| STRATFORD ROAD ESTATES | WA5307542 | Groundwater | 312 | 85 |
| HILLCREST WATER USERS ASSN | WA5333200 | Groundwater | 300 | 9 |
| SKYLINE WATER SYSTEM INC | WA5380210 | Groundwater | 293 | 0 |
| PARKER SPRING ACRES WATER ASSOC | WA5322881 | Groundwater | 255 | 40 |
| SUNRISE WATER ASSOCIATION | WA5316177 | Groundwater | 250 | 9 |
| RIDGEVIEW ESTATES WATER ASSOCIATION | WA5303912 | Groundwater | 240 | 2 |
| GROVE TERRACE MHP TWO LLC | WA5308520 | Groundwater | 220 | 104 |
| Saddle Mountain Water Assoc. | WA5375200 | Groundwater | 219 | 6 |
| COUNTRY CLUB ESTATES WATER SYSTEM | WA5318189 | Groundwater | 186 | 0 |
| Westshore Water Company | WA5356143 | Groundwater | 153 | 10 |
| SKYLINE ACRES INC | WA5380200 | Groundwater | 151 | 12 |
| HATTON TOWN OF | WA5331600 | Groundwater | 105 | 12 |
| FIRST POTHOLES WATER USERS ASSN | WA5325250 | Groundwater | 90 | 14 |
| Viking Road Water System | WA5319208 | Groundwater | 88 | 53 |
| MARINE VIEW HOME OWNERS ASSN | WA5351724 | Groundwater | 87 | 6 |
| HI LO HOMEOWNERS ASSN | WA5385203 | Groundwater | 87 | 1 |
| SECT 11 DIV 1 Ridgeview Water Assn | WA5372410 | Groundwater | 79 | 6 |
| ADMIRAL WATER USERS ASSN | WA5334544 | Groundwater | 74 | 7 |
| RAINIER TRACTS WATER ASSN | WA5370910 | Groundwater | 61 | 126 |
| SUNSET ACRES WATER ASSN | WA5385940 | Groundwater | 61 | 11 |
| MT VIEW WATER SYSTEM | WA5357000 | Groundwater | 42 | 96 |
| Sagedale Apartments | WA53AC812 | Groundwater | 40 | 45 |
| SILVER SANDS CONDO WATER | WA5302345 | Groundwater | 37 | 0 |
| SUNRISE ESTATES WATER SYSTEM | WA5313451 | Groundwater | 33 | 94 |
| ORCHARD HOMES WATER SYSTEM | WA5364080 | Groundwater | 31 | 7 |
| MAPLES PLAT WATER SYSTEM | WA5375340 | Groundwater | 30 | 0 |
| Desert Hills | WA53AC131 | Groundwater | 30 | 0 |
| Lyons Water System | WA53AA796 | Groundwater | 28 | 0 |
| SUN DESERT INC | WA5319936 | Groundwater | 27 | 31 |
| PARK ORCHARD TRACT 40 | WA5366139 | Groundwater | 25 | 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 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.