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Glenn, CA

Moderate Risk (30/100)

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 Glenn in California · Population: 28,623

TRI sites such as Johns Manville; Land O Lakes - Orland; SDWIS systems such as CITY OF ORLAND; ARTOIS COMMUNITY S.D.; ELK CREEK COMMUNITY S.D. anchor Glenn, CA's EPA extract. Derived burden score 30/100 (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 Glenn include ELK CREEK COMMUNITY S.D.; Grindstone Rancheria; BUTTE CITY COMMUNITY S.D., while Johns Manville leads reported TRI pounds among local Form R filers. AQS median AQI 39 / peak 80 in 2024.

Burden score 30/100 (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 Glenn -- 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 Glenn, CA: EPA TRI 2023 reporting year

2022 → 2023

Same facilities, both years

+10.1%

1 facilities that filed in 2022 and 2023

Whole inventory

+10.1%

141.6 thousand lb → 155.9 thousand lb, every facility that filed

  • Glenn, CA's total reported releases rose from 141.6 thousand lb in 2022 to 155.9 thousand lb in 2023, based on EPA TRI filings.
  • Glenn, CA's off-site transfers rose from 106.6 thousand lb in 2022 to 123.8 thousand lb in 2023, based on EPA TRI filings.
  • Glenn, CA's air releases fell from 35.0 thousand lb in 2022 to 32.1 thousand lb in 2023, based on EPA TRI filings.
County population (Census ACS)
28,623
TRI Facilities
2
Water Systems
5
Superfund Sites
0
Total Releases
735.3K lbs

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 292 (80%) 74 0 80
2023 273 (75%) 90 0 97
2022 264 (73%) 95 1 104
2021 244 (67%) 106 9 192
2020 200 (55%) 135 7 221
2024 Good Air Quality: 80% of days
Median AQI: 39

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 California, see the EPA's AirNow.gov.

Water Systems (5)

System System pop (SDWIS) Violations
CITY OF ORLAND 8,298 0
ARTOIS COMMUNITY S.D. 254 0
ELK CREEK COMMUNITY S.D. 212 4
Grindstone Rancheria 150 234
BUTTE CITY COMMUNITY S.D. 75 1

TRI Facilities (2)

# Facility Total Releases
1 Johns Manville 717.6K lbs
2 Land O Lakes - Orland 17.6K lbs

Cities in Glenn (5)

Orland
1 facilities · 1 water
Willows
1 facilities · 0 water
Elk Creek
0 facilities · 2 water
Artois
0 facilities · 1 water
Butte City
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Glenn, California? ▼
Glenn, CA has an environmental risk score of 30/100 (Moderate Risk), based on 2 TRI facilities, 0 Superfund sites, and 5 water systems on record. 3 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Glenn? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Glenn, CA in the EPA database.
How many toxic release facilities are in Glenn? ▼
Glenn, CA has 2 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 735.3K lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Glenn? ▼
In 2024, Glenn, CA recorded a median AQI of 39 and a peak AQI of 80. 80% 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 Glenn? ▼
Glenn, CA has 5 EPA-regulated water systems. 3 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 Glenn? ▼
Environmental compliance in Glenn, California is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the California 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