Spokane Water Quality
Washington
According to EPA SDWIS, Spokane, Washington is served by 35 community water systems covering about 430,067 people. The same extract lists 20 health-based violation records, most recently coded 1040 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Spokane, Washington is delivered through 35 EPA-regulated community water systems serving an estimated 430,067 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 20 violation records across the 35 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 2 distinct EPA contaminant codes: Nitrate, Revised Total Coliform Rule. 17 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Washington drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| SPOKANE CITY OF | 346,138 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 1 | 19,035 | 0 | Clean |
| MODERN ELECTRIC WATER CO | 18,487 | 0 | Clean |
| MODEL IRRIGATION DIST #18 | 7,903 | 0 | Clean |
| PASADENA PARK IRR DIST 17 | 6,269 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 4 | 6,233 | 0 | Clean |
| ORCHARD AVENUE IRRIGATION DIST 6 | 4,330 | 0 | Clean |
| TRENTWOOD IRRIGATION DISTRICT 3 | 4,228 | 0 | Clean |
| IRVIN WATER DISTRICT #6 | 4,150 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 3 | 3,768 | 0 | Clean |
| North Spokane Irrigation District 8 | 2,214 | 0 | Clean |
| MILLWOOD CITY OF | 1,925 | 4 | Health |
| WHITWORTH UNIVERSITY | 1,200 | 0 | Clean |
| RIDGE WATER ASSOCIATION | 615 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 5 | 485 | 0 | Clean |
| WEST PRAIRIE VILLAGE | 375 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 8 | 375 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 6 | 358 | 0 | Clean |
| CHATTAROY VALLEY MOBILE ESTATES | 333 | 0 | Clean |
| River Bluff Water System | 330 | 0 | Clean |
| DUFORT WATER ASSOCIATION | 216 | 0 | Clean |
| MULLEN HILL TERRACE MHP | 207 | 0 | Clean |
| MOUNT ST MICHAELS SCHOOL & CHURCH | 162 | 0 | Clean |
| SPO CO WATER DIST 3 SYS 9 | 105 | 0 | Clean |
| PINE ACRES MOBILE HOME PARK | 100 | 2 | Health |
| INDIAN VILLAGE ESTATES WATER ASSN | 90 | 0 | Clean |
| SHADY PINES TRAILER COURT | 70 | 0 | Clean |
| BEAR CLAW SUBD | 65 | 0 | Clean |
| PONDORAY SHORES WATER & SEWER | 63 | 0 | Clean |
| TEEN CHALLENGE | 61 | 14 | Health |
| RIVERVALE WATER ASSN | 48 | 0 | Clean |
| HIDDEN HILLS ESTATES | 39 | 0 | Clean |
| WOODLAND PARK TRAILER COURT | 38 | 0 | Clean |
| RIDGEVIEW PARK ESTATES | 30 | 0 | Clean |
| PATTERSON ADDITION | 22 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| TEEN CHALLENGE | Nitrate | 2024-10-01 |
| TEEN CHALLENGE | Nitrate | 2024-10-01 |
| TEEN CHALLENGE | Nitrate | 2024-07-01 |
| TEEN CHALLENGE | Nitrate | 2024-04-01 |
| TEEN CHALLENGE | Nitrate | 2024-04-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| TEEN CHALLENGE | Nitrate | 2024-01-01 |
| MILLWOOD CITY OF | Revised Total Coliform Rule | 2022-11-01 |
| MILLWOOD CITY OF | Revised Total Coliform Rule | 2022-11-01 |
| MILLWOOD CITY OF | Revised Total Coliform Rule | 2022-11-01 |
| MILLWOOD CITY OF | Revised Total Coliform Rule | 2022-11-01 |
| PINE ACRES MOBILE HOME PARK | Revised Total Coliform Rule | 2018-02-01 |
| PINE ACRES MOBILE HOME PARK | Revised Total Coliform Rule | 2018-02-01 |
What are Spokane's health-based records for?
Spokane's health-based violation records carry 2 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Nitrate | 14 | 1 |
| Revised Total Coliform Rule | 6 | 2 |
TRI Facilities in Spokane
| Facility | Total Releases |
|---|---|
| Inland Empire Paper Co | 21.9K lbs |
| Central Pre-Mix Sullivan Road | 15.3K lbs |
| Par Montana Spokane Terminal | 14.0K lbs |
| Pyrotek Inc | 9.2K lbs |
| Goodrich Landing Systems Carbon Operations | 8.1K lbs |
| Phillips 66 Spokane-Parkwater Terminal | 7.7K lbs |
| Central Pre-Mix Concrete Co. Crestline Facility | 5.1K lbs |
| Travis Pattern & Foundry Inc | 1.7K lbs |
| Steelfab of Oregon | 197 lbs |
| Elkay Plumbing Products Co | 91 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Spokane, Washington? ▼
How many water violations does Spokane have in this EPA extract? ▼
What contaminants were found in Spokane water? ▼
How many water systems serve Spokane? ▼
Where does Spokane get its drinking water? ▼
Are there pollution sources near Spokane? ▼
How does Spokane compare in Washington?
Of the 365 Washington places with at least one community water system on file, Spokane ranks #14 by number of systems (35).
Either side of it: Moses Lake (35), Poulsbo (35), Tonasket (34), Lynden (31)
About This Data
Figures here are the current EPA SDWIS extract joined to the 35 community water systems whose service area lists Spokane, ranked against the 365 Washington places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.