Pend Oreille, 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. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Pend Oreille in Washington · Population: 13,811
TRI sites such as Pend Oreille Mine; Ponderay Newsprint Co; Safran Cabin Materials LLC; SDWIS systems such as NEWPORT CITY OF; IONE WATER DEPT; DIAMOND LAKE WATER & SEWER DISTRICT anchor Pend Oreille, WA's EPA extract. Derived burden score 38/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Pend Oreille include CUSICK TOWN OF; METALINE FALLS TOWN OF; KALISPEL, while Pend Oreille Mine leads reported TRI pounds among local Form R filers. AQS median AQI 26 / peak 81 in 2022.
Burden score 38/100 (Moderate 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 Pend Oreille -- 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.
Release-over-release change
What changed for Pend Oreille, WA: EPA TRI 2023 reporting year
Same facilities, both years
+15.0%
2 facilities that filed in 2022 and 2023
Whole inventory
+15.0%
2.0 thousand lb → 2.3 thousand lb, every facility that filed
- Pend Oreille, WA's total reported releases rose from 2.0 thousand lb in 2022 to 2.3 thousand lb in 2023, based on EPA TRI filings.
- Pend Oreille, WA's off-site transfers rose from 0 lb in 2022 to 33 lb in 2023, based on EPA TRI filings.
- Pend Oreille, WA's air releases rose from 2.0 thousand lb in 2022 to 2.3 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2022)
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 |
|---|---|---|---|---|
| 2022 | 207 (88%) | 27 | 0 | 81 |
| 2021 | 255 (71%) | 96 | 3 | 196 |
| 2020 | 11 (55%) | 9 | 0 | 63 |
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 (14)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| NEWPORT CITY OF | 3,331 | 0 |
| IONE WATER DEPT | 2,395 | 0 |
| DIAMOND LAKE WATER & SEWER DISTRICT | 1,299 | 0 |
| CUSICK TOWN OF | 672 | 6 |
| METALINE FALLS TOWN OF | 593 | 1 |
| KALISPEL | 330 | 4 |
| METALINE WATER DEPT | 193 | 2 |
| CHIPPEWA WATER DISTRICT | 185 | 0 |
| RIVER BEND WATER SYSTEM | 140 | 1 |
| SANDY SHORE & SUNNYSIDE MEADOWS | 83 | 0 |
| LENORA WATER AND SEWER DISTRICT | 75 | 0 |
| GOOSEHAVEN | 75 | 0 |
| RIVER VIEW SHORES WATER SYSTEM | 58 | 0 |
| SUNVALE ACRES 4TH ADD WATER SYSTEM | 56 | 0 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Pend Oreille Mine | 6.0M lbs |
| 2 | Ponderay Newsprint Co | 266.8K lbs |
| 3 | Safran Cabin Materials LLC | 6.6K lbs |
Cities in Pend Oreille (7)
Frequently Asked Questions
What is the environmental risk level in Pend Oreille, Washington? ▼
Are there Superfund sites in Pend Oreille? ▼
How many toxic release facilities are in Pend Oreille? ▼
What is the air quality in Pend Oreille? ▼
Is the drinking water safe in Pend Oreille? ▼
What environmental agencies cover Pend Oreille? ▼
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.