Mayes, 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. 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 Mayes in Oklahoma · Population: 39,406
TRI sites such as Pryor Solae; Lsb Chemical L.L.C.; Grand River Dam Authority Coal Fired Complex; SDWIS systems such as MAYES CO RWD #4; MAYES CO RWD # 5; MAYES CO RWD # 9 anchor Mayes, OK's EPA extract. Derived burden score 55/100 (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 Mayes include MAYES CO RWD #4; MAYES CO RWD # 5; MAYES CO RWD # 9, while Pryor Solae leads reported TRI pounds among local Form R filers. AQS median AQI 40 / peak 112 in 2024.
Burden score 55/100 (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 Mayes -- 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 Mayes, OK: EPA TRI 2023 reporting year
Same facilities, both years
+5.1%
12 facilities that filed in 2022 and 2023
Whole inventory
+5.1%
4.9 million lb → 5.1 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Mayes, OK's total reported releases rose from 4.9 million lb in 2022 to 5.1 million lb in 2023, based on EPA TRI filings.
- Mayes, OK's off-site transfers fell from 9.0 thousand lb in 2022 to 1.2 thousand lb in 2023, based on EPA TRI filings.
- Mayes, OK's land releases rose from 1.8 million lb in 2022 to 2.1 million lb in 2023, based on EPA TRI filings.
- Mayes, OK's chemicals reported fell from 45 in 2022 to 40 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 | 261 (90%) | 28 | 1 | 112 |
| 2023 | 255 (89%) | 28 | 2 | 129 |
| 2022 | 246 (92%) | 19 | 1 | 112 |
| 2021 | 228 (92%) | 20 | 0 | 100 |
| 2020 | 255 (99%) | 3 | 0 | 51 |
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 (13)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| MAYES CO RWD #4 | 4,183 | 5 |
| MAYES CO RWD # 5 | 3,360 | 4 |
| MAYES CO RWD # 9 | 2,578 | 5 |
| MAYES CO RWD # 3 | 2,400 | 16 |
| CHOUTEAU | 2,100 | 1 |
| LOCUST GROVE PWA | 1,600 | 43 |
| SALINA PWA | 1,422 | 4 |
| LANGLEY | 950 | 14 |
| ADAIR | 704 | 0 |
| MAYES CO RWD # 7 | 538 | 6 |
| SPAVINAW | 432 | 1 |
| CEDAR CREST COUNTRY CLUB | 315 | 1 |
| SPORTSMEN ACRES | 218 | 2 |
TRI Facilities (15)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Pryor Solae | 11.8M lbs |
| 2 | Lsb Chemical L.L.C. | 8.3M lbs |
| 3 | Grand River Dam Authority Coal Fired Complex | 1.0M lbs |
| 4 | Norit Americas Inc | 234.8K lbs |
| 5 | American Castings LLC | 124.4K lbs |
| 6 | Lone Star Ind. Inc. DBA Buzzi Unicem USA Pryor Cement Plant | 118.6K lbs |
| 7 | Interplastic Corp | 81.2K lbs |
| 8 | Gap Roofing Inc | 1.8K lbs |
| 9 | Aptus Manufacturing I LLC | 1.1K lbs |
| 10 | Gold Bond Building Products - Pryor | 330 lbs |
| 11 | Rae Corp | 70 lbs |
| 12 | Chevron Phillips Chemical Co Performance Pipe a Div | 52 lbs |
| 13 | Standard Materials Group Inc. Pryor | 33 lbs |
| 14 | Jam Distributing Co Pryor Terminal | 0 lbs |
| 15 | Pryor Batch Plant | 0 lbs |
Cities in Mayes (8)
Frequently Asked Questions
What is the environmental risk level in Mayes, Oklahoma? ▼
Are there Superfund sites in Mayes? ▼
How many toxic release facilities are in Mayes? ▼
What is the air quality in Mayes? ▼
Is the drinking water safe in Mayes? ▼
What environmental agencies cover Mayes? ▼
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.