Clallam, 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 Clallam in Washington · Population: 77,593
Clallam, WA is tracked across three EPA datasets covering 5 Toxics Release Inventory (TRI) facilities, 55 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 36/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 166.1K lbs of reported toxic releases under EPCRA Section 313, while 5 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 36 and a peak AQI of 69 in 2024, with 88% 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 | 321 (88%) | 45 | 0 | 69 |
| 2023 | 307 (84%) | 57 | 1 | 101 |
| 2022 | 272 (75%) | 91 | 2 | 124 |
| 2021 | 298 (82%) | 67 | 0 | 81 |
| 2020 | 304 (83%) | 55 | 1 | 368 |
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 (55)
| System | Population | Violations |
|---|---|---|
| PORT ANGELES CITY OF | 28,946 | 0 |
| SEQUIM CITY OF | 14,293 | 0 |
| MT. VISTA - DUNGENESS GOLF COURSE | 3,200 | 0 |
| Dry Creek Water Association | 3,030 | 0 |
| WEST SEQUIM BAY INC | 2,759 | 0 |
| SUNLAND WATER DISTRICT | 2,235 | 0 |
| MAKAH NEAH BAY | 1,300 | 42 |
| ESTATES INC | 1,043 | 0 |
| Solmar Water | 895 | 0 |
| QUILEUTE WATER SYSTEM | 885 | 0 |
| LOWER ELWHA VALLEY | 511 | 0 |
| DUNGENESS MEADOWS | 488 | 0 |
| MONTERRA | 464 | 0 |
| DUNGENESS BAY PLAT | 461 | 0 |
| BLACK DIAMOND WATER DISTRICT | 452 | 0 |
| Parkwood MFD Housing Community | 378 | 0 |
| MAINS FARM PROPERTY OWNERS | 358 | 0 |
| SUN MEADOWS | 295 | 0 |
| VISTAS INC | 241 | 1 |
| FOUR SEASONS PARK | 225 | 1 |
| ELWHA HEIGHTS | 216 | 0 |
| DISCOVERY BAY VILLAGE | 191 | 0 |
| DUNGENESS BEACH | 181 | 0 |
| FLAURAS ACRES PROPERTYOWNER | 150 | 0 |
| OLYMPUS BEACH TRACTS | 143 | 0 |
| MAPLE GROVE | 132 | 0 |
| PLEASANT TIDES WATER CO OP | 131 | 0 |
| DISCOVERY BAY LEASEHOLDERS | 123 | 0 |
| WOODLAND HEIGHTS | 105 | 0 |
| JAMESTOWN ON WILCOX LANE | 94 | 0 |
| SAN JUAN VISTA | 94 | 0 |
| BAYWOOD VILLAGE MOBILE HOME PARK | 90 | 0 |
| HEART O THE HILLS | 76 | 0 |
| PANORAMA VISTA | 75 | 0 |
| GREEN ACRES MOBILE HOME PARK | 74 | 0 |
| CARLSBORG MOBILE ESTATES | 69 | 0 |
| LAKE PLEASANT MOBILE HOME & RV PARK | 66 | 1 |
| FOREST RIDGE | 65 | 0 |
| MADRONA RIDGE HOMEOWNERS | 65 | 0 |
| ELWHA PLACE HOMEOWNERS ASSN | 61 | 0 |
| LORA LEE ESTATES | 60 | 0 |
| WHISPERING PINES TR CT | 55 | 0 |
| MEADOWBROOK VILLAGE | 55 | 0 |
| DEYTONA | 50 | 0 |
| HAPPY VALLEY ESTATES | 46 | 0 |
| BEACH | 45 | 1 |
| BUENA VISTA ESTATES | 42 | 0 |
| CEDAR GROVE MOBILE PARK | 40 | 0 |
| ALDERWOOD EAST | 39 | 0 |
| OLYMPIC VIEW MOBILE PARK | 34 | 0 |
| OLYMPIC VIEW | 33 | 0 |
| BRANDT POINT | 32 | 0 |
| PALO VERDE | 30 | 0 |
| LOUELLA HEIGHTS | 28 | 0 |
| PETERSON-WHITTAKER | 26 | 0 |
TRI Facilities (5)
| # | Facility | Total Releases |
|---|---|---|
| 1 | McKinley Paper Co. - Washington Mill | 118.2K lbs |
| 2 | Pacific Aerospace & Electronics Inc SE | 41.5K lbs |
| 3 | Westport LLC 50 Meter Facility | 6.1K lbs |
| 4 | Interfor US - Port Angeles | 198 lbs |
| 5 | Tesoro Port Angeles Terminal | 124 lbs |
Cities in Clallam (2)
Frequently Asked Questions
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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.