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McClain, OK

Low Risk (20/100)

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 McClain in Oklahoma · Population: 43,779

SDWIS systems such as NEWCASTLE; PURCELL; GOLDSBY WATER AUTH TRUST; NPL sites such as Hardage/Criner anchor McClain, OK's EPA extract. Derived burden score 20/100 (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 McClain in this extract; water coverage still lists NEWCASTLE; PURCELL; GOLDSBY WATER AUTH TRUST. AQS monitors logged median AQI 46 / peak 133 in 2024.

Burden score 20/100 (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 McClain -- 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.

County population (Census ACS)
43,779
TRI Facilities
0
Water Systems
8
Superfund Sites
1
Total Releases
0 lbs

Air Quality History (2021–2024)

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 172 (64%) 87 10 133
2023 144 (59%) 91 11 143
2022 204 (73%) 71 3 119
2021 168 (81%) 39 1 101
2024 Good Air Quality: 64% of days
Unhealthy days: 10
Median AQI: 46

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 (8)

System System pop (SDWIS) Violations
NEWCASTLE 7,900 6
PURCELL 6,693 4
GOLDSBY WATER AUTH TRUST 2,000 8
MCCLAIN CO RWD # 8 1,897 5
WAYNE 688 12
WASHINGTON 600 9
DIBBLE 550 8
BYARS 275 14

Superfund Sites (1)

Site Name Status HRS Score
Hardage/Criner NPL Site 51.01

Cities in McClain (8)

Wayne
0 facilities · 2 water
Byars
0 facilities · 1 water
Dibble
0 facilities · 1 water
Goldsby
0 facilities · 1 water
Newcastle
0 facilities · 1 water
Purcell
0 facilities · 1 water
Washington
0 facilities · 1 water
Criner
0 facilities · 0 water

Frequently Asked Questions

What is the environmental risk level in McClain, Oklahoma? ▼
McClain, OK has an environmental risk score of 20/100 (Low Risk), based on 0 TRI facilities, 1 Superfund sites, and 8 water systems on record. 8 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in McClain? ▼
Yes, McClain, OK has 1 Superfund site on the EPA National Priorities List (NPL). Superfund sites are contaminated locations that require long-term cleanup under the EPA Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).
How many toxic release facilities are in McClain? ▼
McClain, OK has 0 TRI-reporting facilities on record with the EPA Toxic Release Inventory. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in McClain? ▼
In 2024, McClain, OK recorded a median AQI of 46 and a peak AQI of 133. 64% of monitored days had "Good" air quality (AQI 0–50). Source: EPA Air Quality System (AQS) Annual AQI by County.
Is the drinking water safe in McClain? ▼
McClain, OK has 8 EPA-regulated water systems. 8 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover McClain? ▼
Environmental compliance in McClain, Oklahoma is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Oklahoma state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

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.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro