Spokane, WA
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Spokane in Washington · Population: 544,323
Spokane, WA is tracked across three EPA datasets covering 35 Toxics Release Inventory (TRI) facilities, 76 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 61/100 (High Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 749.5K lbs of reported toxic releases under EPCRA Section 313, while 6 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 38 and a peak AQI of 106 in 2024, with 77% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 280 (77%) | 85 | 1 | 106 |
| 2023 | 257 (70%) | 104 | 1 | 447 |
| 2022 | 254 (70%) | 105 | 3 | 185 |
| 2021 | 242 (66%) | 114 | 3 | 195 |
| 2020 | 286 (78%) | 73 | 0 | 785 |
Source: EPA Air Quality System (AQS) Annual AQI by County EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Washington, see the EPA's AirNow.gov.
Water Systems (76)
| System | Population | Violations |
|---|---|---|
| SPOKANE CITY OF | 343,167 | 0 |
| WHITWORTH WATER DISTRICT 2 | 26,883 | 0 |
| VERA WATER & POWER | 24,692 | 0 |
| CONSOLIDATED IRRIG DIST 19 SYSTEM 2 | 21,220 | 0 |
| SPO CO WATER DIST 3 SYS 1 | 18,983 | 0 |
| EASTERN WASHINGTON UNIVERSITY | 17,108 | 0 |
| CHENEY CITY OF | 14,621 | 0 |
| LIBERTY LAKE SEWER & WATER DISTRICT | 14,212 | 0 |
| AIRWAY HEIGHTS CITY OF | 9,489 | 0 |
| CONSOLIDATED IRRIG DIST 19 SYSTEM 1 | 9,434 | 0 |
| MODEL IRRIGATION DIST #18 | 7,903 | 0 |
| PASADENA PARK IRR DIST 17 | 6,269 | 0 |
| SPO CO WATER DIST 3 SYS 4 | 6,155 | 0 |
| FAIRCHILD AIR FORCE BASE | 5,553 | 0 |
| DEER PARK CITY OF | 5,045 | 0 |
| MEDICAL LAKE CITY OF | 4,982 | 0 |
| ORCHARD AVENUE IRRIGATION DIST 6 | 4,330 | 0 |
| EAST SPOKANE WATER DIST 1 | 4,285 | 0 |
| TRENTWOOD IRRIGATION DISTRICT 3 | 4,228 | 0 |
| IRVIN WATER DISTRICT #6 | 4,150 | 0 |
| SPO CO WATER DIST 3 SYS 3 | 3,765 | 0 |
| HUTCHINSON IRRIGATION DIST #16 | 2,826 | 0 |
| North Spokane Irrigation District 8 | 2,214 | 0 |
| CARNHOPE IRRIGATION DISTRICT 7 | 2,104 | 0 |
| MILLWOOD CITY OF | 1,925 | 4 |
| MOAB IRRIGATION DIST #20 | 1,790 | 0 |
| REARDAN TOWN OF | 1,418 | 0 |
| WHITWORTH UNIVERSITY | 1,200 | 0 |
| WILBUR TOWN OF | 1,040 | 0 |
| HANGMAN HILLS WATER DIST 15 | 827 | 0 |
| HARRINGTON CITY OF | 650 | 0 |
| RIDGE WATER ASSOCIATION | 615 | 0 |
| ROCKFORD TOWN OF | 570 | 0 |
| CONSOLIDATED SUPPORT SERVICES | 569 | 0 |
| SPO CO WATER DIST 3 SYS 5 | 485 | 0 |
| PIONEER WATER COMPANY | 443 | 0 |
| FOUR LAKES WATER DISTRICT 10 | 433 | 0 |
| SEVEN BAYS ESTATES UNLIMITED | 431 | 0 |
| UPPER COLUMBIA ACADEMY | 380 | 0 |
| WEST PRAIRIE VILLAGE | 375 | 0 |
| SPO CO WATER DIST 3 SYS 8 | 375 | 0 |
| SPO CO WATER DIST 3 SYS 6 | 358 | 0 |
| STRATHVIEW WATER DISTRICT 16 | 351 | 0 |
| CRESTON PUBLIC WATER | 348 | 2 |
| CHATTAROY VALLEY MOBILE ESTATES | 333 | 0 |
| River Bluff Water System | 330 | 0 |
| SPANGLE TOWN OF | 270 | 0 |
| GREEN BLUFF WATER ASSN | 218 | 0 |
| DUFORT WATER ASSOCIATION | 216 | 0 |
| MULLEN HILL TERRACE MHP | 207 | 0 |
| LATAH TOWN OF | 194 | 0 |
| LAKEHURST H2O | 170 | 0 |
| MOUNT ST MICHAELS SCHOOL & CHURCH | 162 | 0 |
| REFLECTION WATER ASSOCIATION | 150 | 0 |
| ALOHA PINES ESTATES WATER SYSTEM | 125 | 0 |
| SNOWBLAZE | 121 | 3 |
| WAVERLY TOWN OF | 120 | 0 |
| SPO CO WATER DIST 3 SYS 9 | 105 | 0 |
| PINE ACRES MOBILE HOME PARK | 100 | 2 |
| INDIAN VILLAGE ESTATES WATER ASSN | 90 | 0 |
| VEL VIEW WATER DIST 13 | 77 | 0 |
| MARSHALL COMMUNITY WATER ASSN | 74 | 0 |
| BEAR CLAW SUBD | 70 | 0 |
| VALLEY OF THE HORSES WATER DIST #12 | 70 | 0 |
| TEEN CHALLENGE | 61 | 11 |
| SYRINGA HEIGHTS MOBILE HOME PARK | 52 | 0 |
| PINE HAYDEN SUBD | 50 | 0 |
| ASPEN REFLECTIONS LANDING WATER | 49 | 0 |
| RIVERVALE WATER ASSN | 48 | 0 |
| CHATTAROY SPRINGS WATER ASSN | 43 | 4 |
| HIDDEN HILLS ESTATES | 39 | 0 |
| WOODLAND PARK TRAILER COURT | 38 | 0 |
| SLEEPY HOLLOW APTS | 35 | 0 |
| RIDGEVIEW PARK ESTATES | 30 | 0 |
| WILDROSE VILLAGE | 30 | 0 |
| PATTERSON ADDITION | 22 | 0 |
TRI Facilities (35)
Cities in Spokane (12)
Frequently Asked Questions
What is the environmental risk level in Spokane, Washington? ▼
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What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.