Shasta, CA
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 Shasta in California · Population: 181,554
TRI sites such as Knauf Insulation Inc.; Calportland Redding Cement Plant; Sierra Pacific Industries Anderson Div; SDWIS systems such as CITY OF REDDING; BELLA VISTA WATER DISTRICT; CITY OF ANDERSON; NPL sites such as Afterthought Mine; Iron Mountain Mine anchor Shasta, CA's EPA extract. Derived burden score 50/100 (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 Shasta include CITY OF ANDERSON; CLEAR CREEK CSD-ANDERSON; CENTERVILLE C.S.D., while Knauf Insulation Inc. leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 232 in 2024.
Burden score 50/100 (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 Shasta -- 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 Shasta, CA: EPA TRI 2023 reporting year
Same facilities, both years
+6.4%
7 facilities that filed in 2022 and 2023
Whole inventory
+6.4%
201.8 thousand lb → 214.6 thousand lb, every facility that filed
- Shasta, CA's total reported releases rose from 201.8 thousand lb in 2022 to 214.6 thousand lb in 2023, based on EPA TRI filings.
- Shasta, CA's off-site transfers rose from 2.5 thousand lb in 2022 to 20.3 thousand lb in 2023, based on EPA TRI filings.
- Shasta, CA's chemicals reported fell from 12 in 2022 to 11 in 2023, based on EPA TRI filings.
- Shasta, CA's air releases fell from 199.3 thousand lb in 2022 to 194.3 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 | 268 (73%) | 94 | 3 | 232 |
| 2023 | 247 (68%) | 112 | 5 | 1435 |
| 2022 | 253 (69%) | 106 | 6 | 119 |
| 2021 | 222 (61%) | 111 | 15 | 240 |
| 2020 | 286 (78%) | 72 | 6 | 171 |
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 (44)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CITY OF REDDING | 89,628 | 0 |
| BELLA VISTA WATER DISTRICT | 18,612 | 0 |
| CITY OF ANDERSON | 11,147 | 1 |
| CITY OF SHASTA LAKE | 10,657 | 0 |
| CLEAR CREEK CSD-ANDERSON | 8,900 | 1 |
| CENTERVILLE C.S.D. | 4,151 | 1 |
| BURNEY WATER DISTRICT | 3,154 | 1 |
| SHASTA C.S.D. | 3,069 | 0 |
| MOUNTAIN GATE C.S.D. | 2,227 | 1 |
| Redding Rancheria | 2,015 | 1 |
| SHASTA CSA - JONES VALLEY, #6 | 2,006 | 1 |
| FALL RIVER VALLEY CSD | 1,535 | 1 |
| SHASTA FOREST VILLAGE M.W.C. | 750 | 0 |
| STARLITE PINES MUTUAL WATER CO INC | 510 | 0 |
| LASSEN PINES MUTUAL WATER CO INC | 475 | 1 |
| EL RIO ESTATES | 434 | 1 |
| SHASTA CSA - FRENCH GULCH, #11 | 419 | 7 |
| BALLS FERRY FISHING RESORT | 408 | 0 |
| VERDE VALE WATER COMPANY | 356 | 0 |
| SHASTA CSA - CASTELLA, #3 | 333 | 4 |
| LAKESIDE WOODS MUTUAL WATER CO | 310 | 1 |
| MEL MAR MUTUAL WATER CO | 300 | 1 |
| SHASTA CSA - SUGARLOAF, #2 | 274 | 1 |
| LAKESHORE HEIGHTS MUTUAL WATER | 264 | 1 |
| SHASTA CO CSA # 8 PALO CEDRO | 261 | 1 |
| LAZY LANDING MOBILE HOME PARK | 250 | 1 |
| SHASTA CSA - CRAGVIEW, #23 | 248 | 5 |
| WOODRIDGE MUTUAL WATER CO | 187 | 1 |
| CASSEL PARK MUTUAL WATER CO | 131 | 0 |
| SHASTA CO CSA # 13 ALPINE MEADOWS | 109 | 1 |
| BIG SPRINGS MUTUAL WATER SYSTEM | 97 | 1 |
| TUCKER OAKS EAST WATER DISTRICT | 95 | 2 |
| CORTLAND PINES MUTUAL WATER CO | 92 | 0 |
| Pit River Montgomery Creek Rancheria | 90 | 2 |
| VILLAGE GREEN | 90 | 1 |
| HAT CREEK HIGHLANDS MUTUAL WATER CO | 88 | 2 |
| SIENNA RIDGE ESTATES | 81 | 1 |
| CLEAR CREEK MOBILE PARK | 75 | 0 |
| LAKEHEAD SUBD MUTUAL WATER CO | 70 | 1 |
| PALISADES, THE | 62 | 0 |
| Pit River XL Rancheria | 61 | 0 |
| COVINGTON MILL - A | 60 | 0 |
| CANYON CREEK MHP | 35 | 0 |
| RIO VISTA MOBILEHOME ESTATES | 26 | 1 |
TRI Facilities (8)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Knauf Insulation Inc. | 1.0M lbs |
| 2 | Calportland Redding Cement Plant | 14.1K lbs |
| 3 | Sierra Pacific Industries Anderson Div | 13.1K lbs |
| 4 | J.f. Shea Construction Inc Fawndale Rock & Asphalt | 614 lbs |
| 5 | J.f. Shea Construction Inc. Aggregate Products | 153 lbs |
| 6 | U.S. Forest Service Redding Airtanker Base | 20 lbs |
| 7 | Sierra Pacific Industries Burney Div | 2 lbs |
| 8 | Captiveaire Systems Inc | 0 lbs |
Superfund Sites (2)
| Site Name | Status | HRS Score |
|---|---|---|
| Afterthought Mine | NPL Site | 50.00 |
| Iron Mountain Mine | NPL Site | 56.16 |
Cities in Shasta (13)
Frequently Asked Questions
What is the environmental risk level in Shasta, California? ▼
Are there Superfund sites in Shasta? ▼
How many toxic release facilities are in Shasta? ▼
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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.