Pittsburg, OK
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 Pittsburg in Oklahoma · Population: 43,629
TRI sites such as US Army McAlester Army Ammunition Plant; Eurecat US; Choctaw Defense McAlester; SDWIS systems such as MCALESTER PWA; ADAMSON RWD #8; HARTSHORNE anchor Pittsburg, OK's EPA extract. Derived burden score 41/100 (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 Pittsburg include MCALESTER PWA; ADAMSON RWD #8; HARTSHORNE, while US Army McAlester Army Ammunition Plant leads reported TRI pounds among local Form R filers. AQS median AQI 48 / peak 105 in 2024.
Burden score 41/100 (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 Pittsburg -- 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 Pittsburg, OK: EPA TRI 2023 reporting year
Same facilities, both years
-73.7%
2 facilities that filed in 2022 and 2023
Whole inventory
-73.7%
428.0 thousand lb → 112.6 thousand lb, every facility that filed
- Pittsburg, OK's total reported releases fell from 428.0 thousand lb in 2022 to 112.6 thousand lb in 2023, based on EPA TRI filings.
- Pittsburg, OK's off-site transfers rose from 11.5 thousand lb in 2022 to 72.8 thousand lb in 2023, based on EPA TRI filings.
- Pittsburg, OK's air releases rose from 2.5 thousand lb in 2022 to 5.2 thousand lb in 2023, based on EPA TRI filings.
- Pittsburg, OK's land releases fell from 413.9 thousand lb in 2022 to 34.6 thousand lb in 2023, based on EPA TRI filings.
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 | 198 (55%) | 162 | 2 | 105 |
| 2023 | 196 (55%) | 152 | 7 | 119 |
| 2022 | 208 (60%) | 136 | 4 | 139 |
| 2021 | 176 (49%) | 180 | 4 | 117 |
| 2020 | 230 (63%) | 135 | 1 | 141 |
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 Oklahoma, see the EPA's AirNow.gov.
Water Systems (18)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MCALESTER PWA | 18,206 | 156 |
| ADAMSON RWD #8 | 4,221 | 160 |
| HARTSHORNE | 2,300 | 105 |
| PITTSBURG CO. PWA (CROWDER) | 2,203 | 24 |
| KREBS UTILITY AUTHORITY | 2,051 | 56 |
| PITTSBURG CO. RWD #7 (ARPELAR) | 2,040 | 90 |
| INDIANOLA RWD #18 | 2,000 | 8 |
| US ARMY AMMUNITION PLANT | 1,872 | 9 |
| PITTSBURG CO. RWD #14 | 1,680 | 229 |
| QUINTON | 1,071 | 19 |
| HAILEYVILLE | 889 | 41 |
| PITTSBURG CO. RWD #9 (MCALESTER) | 872 | 17 |
| SAVANNA | 800 | 30 |
| PITTSBURG CO. RWD #11 (KIOWA) | 790 | 22 |
| KIOWA | 731 | 129 |
| PITTSBURG CO. RWD #6 (ALDERSON) | 300 | 21 |
| PITTSBURG | 280 | 185 |
| ATOKA CO. RWD #1 (WARDVILLE) | 125 | 72 |
TRI Facilities (5)
| # | Facility | Total Releases |
|---|---|---|
| 1 | US Army McAlester Army Ammunition Plant | 1.0M lbs |
| 2 | Eurecat US | 918.2K lbs |
| 3 | Choctaw Defense McAlester | 35 lbs |
| 4 | Dura-Line | 2 lbs |
| 5 | National Oilwell Varco McAlester Works | 0 lbs |
Cities in Pittsburg (10)
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.