Shasta, CA
A PlainEnviro-computed score from reported facility/violation counts, not an official EPA rating, health forecast, or population-adjusted rate. See methodology.
Environmental data for Shasta in California · Population: 181,554
Shasta, CA is tracked across three EPA datasets covering 8 Toxics Release Inventory (TRI) facilities, 47 Safe Drinking Water Act systems, and 0 Superfund National Priorities List sites. Together these generate an environmental burden score of 40/100 (Moderate Risk), calibrated against national distributions for facility density, chemical release volume, Superfund concentration, and water-system health violations.
Industrial disclosures inside the county total 1.0M lbs of reported toxic releases under EPCRA Section 313, while 32 water systems carry an active health-based violation in the SDWIS record. EPA Air Quality System monitors logged a median AQI of 44 and a peak AQI of 232 in 2024, with 73% of observed days rated "Good" (0–50).
All figures below draw directly from federal EPA records, TRI self-reported emissions, SDWIS compliance history, NPL Hazard Ranking System scores, and AQS daily AQI summaries, and are not adjusted, weighted, or forecast. A past violation or elevated score does not itself indicate current unsafe conditions; it documents the regulatory and disclosure history publicly filed with the U.S. Environmental Protection Agency through the most recent reporting cycle.
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 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 (47)
| System | Population | 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 |
| SHASTA CO CSA # 13 ALPINE MEADOWS | 141 | 1 |
| CASSEL PARK MUTUAL WATER CO | 131 | 0 |
| 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 |
| SADDLEBACK MUTUAL WATER CO. | 90 | 2 |
| HAT CREEK HIGHLANDS MUTUAL WATER CO | 88 | 2 |
| LONE TREE MOBILE HOME PARK | 85 | 1 |
| SIENNA RIDGE ESTATES | 81 | 1 |
| NORTH REDDING RV VILLAGE | 78 | 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 | 3 lbs |
| 8 | Captiveaire Systems Inc | 0 lbs |
Cities in Shasta (5)
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.