Kittitas, WA
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Kittitas in Washington · Population: 44,736
SDWIS systems such as ELLENSBURG WATER DEPT; SNOQUALMIE PASS UTILITY DISTRICT; SUNCADIA RESORT anchor Kittitas, WA's EPA extract. Derived burden score 6/100 (Low Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
No TRI Form R facilities sit in Kittitas in this extract; water coverage still lists ELLENSBURG WATER DEPT; SNOQUALMIE PASS UTILITY DISTRICT; SUNCADIA RESORT. AQS monitors logged median AQI 23 / peak 94 in 2024.
Burden score 6/100 (Low Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Kittitas -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
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 | 320 (87%) | 46 | 0 | 94 |
| 2023 | 287 (79%) | 74 | 1 | 254 |
| 2022 | 259 (71%) | 100 | 3 | 164 |
| 2021 | 303 (83%) | 57 | 3 | 173 |
| 2020 | 297 (81%) | 57 | 2 | 724 |
Source: 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 (46)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| ELLENSBURG WATER DEPT | 20,900 | 0 |
| SNOQUALMIE PASS UTILITY DISTRICT | 5,832 | 0 |
| SUNCADIA RESORT | 2,640 | 0 |
| KITTITAS CITY OF | 2,247 | 0 |
| CLE ELUM WATER DEPARTMENT | 2,213 | 1 |
| ROSLYN CITY OF | 2,099 | 0 |
| BASIN WATER SOURCES INC | 1,158 | 0 |
| KITTITAS COUNTY WATER DISTRICT #5 | 700 | 0 |
| SOUTH CLE ELUM WATER DEPT | 541 | 0 |
| KITTITAS COUNTY WATER DISTRICT #4 | 510 | 0 |
| KITTITAS COUNTY WATER DISTRICT #7 | 463 | 0 |
| VANTAGE WATER SYSTEM | 405 | 0 |
| EASTON WATER DISTRICT | 362 | 0 |
| GRASSLANDS WATER SYSTEM | 264 | 0 |
| KITTITAS CO WD #2 | 242 | 0 |
| INDIAN RIDGE WATER ASSOCIATION | 216 | 0 |
| Outlaw Camp | 193 | 0 |
| PINELOCH SUN BEACH CLUB | 190 | 0 |
| QUAIL RUN MOBILE HOME PARK | 165 | 0 |
| CASCADE VILLAGE MHP | 164 | 0 |
| Palomino Fields | 156 | 0 |
| EVERGREEN VALLEY | 152 | 0 |
| SPORTSMAN TRAILER PARK | 151 | 0 |
| DRIFTWOOD ACRES MAINTENANCE CORP | 114 | 0 |
| DIAMOND POINT WATER SYSTEM | 110 | 0 |
| CENTRAL MOBILE HOME PARK | 110 | 0 |
| PONDEROSA MOBILE HOME PARK | 105 | 0 |
| SKY MEADOWS RANCH COUNTRY CLUB WTR | 98 | 0 |
| SUN ISLAND MAINTENANCE ASSN | 97 | 0 |
| WILDWOOD 2 AND 3 | 93 | 0 |
| Game Farm Estates | 81 | 0 |
| Kiona West Heights Water Assoc. | 77 | 0 |
| Cougar Campers | 44 | 0 |
| HIDDEN VALLEY GUEST RANCH | 43 | 0 |
| LAKEVIEW MOBILE TERRACE | 43 | 0 |
| RESERVOIR HILL MAINTENANCE ASSN | 34 | 0 |
| Granite Glen | 34 | 0 |
| CASCADE VIEW ESTATES #4 | 30 | 0 |
| Turf Trails Domestic | 30 | 0 |
| Cottage Farms | 30 | 0 |
| Grasslands Park | 29 | 0 |
| Dakota Heights Water System | 29 | 0 |
| CASCADE VIEW ESTATES #1 | 28 | 0 |
| Mountain Ridge | 28 | 2 |
| SWIFTWATER TRAILER PARK | 27 | 0 |
| CASCADE VIEW ESTATES #3 | 25 | 0 |
Cities in Kittitas (9)
Frequently Asked Questions
What is the environmental risk level in Kittitas, Washington? ▼
Are there Superfund sites in Kittitas? ▼
How many toxic release facilities are in Kittitas? ▼
What is the air quality in Kittitas? ▼
Is the drinking water safe in Kittitas? ▼
What environmental agencies cover Kittitas? ▼
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.