Placer, 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 Placer in California · Population: 412,435
TRI sites such as Sierra Pacific Industries Lincoln Div; H.b. Fuller Co; Tsi Semiconductors America, LLC; SDWIS systems such as CITY OF ROSEVILLE; PLACER CWA - FOOTHILL; CITY OF LINCOLN anchor Placer, CA's EPA extract. Derived burden score 36/100 (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 Placer include NORTH TAHOE PUD - MAIN; TAHOE CITY PUD - TAHOE SWISS VILLAGE; FULTON WATER COMPANY, while Sierra Pacific Industries Lincoln Div leads reported TRI pounds among local Form R filers. AQS median AQI 50 / peak 140 in 2024.
Burden score 36/100 (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 Placer -- 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 Placer, CA: EPA TRI 2023 reporting year
Same facilities, both years
-3.2%
9 facilities that filed in 2022 and 2023
Whole inventory
-2.4%
29.2 thousand lb → 28.5 thousand lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 0 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Placer, CA's total reported releases fell from 29.2 thousand lb in 2022 to 28.3 thousand lb in 2023, based on EPA TRI filings.
- Placer, CA's water releases rose from 13 lb in 2022 to 33 lb in 2023, based on EPA TRI filings.
- Placer, CA's land releases rose from 931 lb in 2022 to 2.4 thousand lb in 2023, based on EPA TRI filings.
- Placer, CA's off-site transfers fell from 1.7 thousand lb in 2022 to 1.2 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 | 188 (51%) | 151 | 27 | 140 |
| 2023 | 164 (45%) | 193 | 8 | 143 |
| 2022 | 156 (43%) | 185 | 15 | 442 |
| 2021 | 130 (36%) | 187 | 30 | 692 |
| 2020 | 130 (36%) | 195 | 20 | 247 |
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 (56)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| CITY OF ROSEVILLE | 155,612 | 0 |
| PLACER CWA - FOOTHILL | 89,544 | 0 |
| CITY OF LINCOLN | 54,538 | 0 |
| SAN JUAN WATER DISTRICT | 29,598 | 0 |
| PLACER CWA - AUBURN/BOWMAN | 27,294 | 0 |
| FORESTHILL PUBLIC UTILITY DIST | 6,782 | 0 |
| NORTH TAHOE PUD - MAIN | 6,321 | 1 |
| TAHOE CITY PUD - MAIN | 5,661 | 0 |
| MEADOW VISTA CWD | 4,183 | 0 |
| TAHOE CITY PUD - TAHOE SWISS VILLAGE | 3,363 | 1 |
| PLACER CWA - COLFAX | 3,149 | 0 |
| FULTON WATER COMPANY | 2,593 | 2 |
| AGATE BAY WATER COMPANY | 2,500 | 2 |
| ALPINE SPRINGS COUNTY WATER DISTRICT | 2,200 | 0 |
| PCWA - WEIMAR | 1,689 | 0 |
| MIDWAY HEIGHTS C. W. D. | 1,491 | 0 |
| OLYMPIC VALLEY PSD | 1,165 | 0 |
| TAHOE CITY PUD - MCKINNEY/QUAIL | 844 | 0 |
| TAHOE CITY PUD - TAHOE CEDARS | 793 | 0 |
| PLACER CWA - ALTA | 748 | 0 |
| TAHOE CITY PUD - RUBICON | 703 | 0 |
| PLACER CSA - SHERIDAN | 653 | 0 |
| NORTH TAHOE PUD - CARNELIAN WOODS | 524 | 0 |
| NORTH TAHOE PUD - DOLLAR COVE | 507 | 1 |
| HIDDEN VALLEY COMMUNITY ASSOCIATION | 499 | 0 |
| WARD WELL WATER COMPANY | 425 | 0 |
| PLAVADA COMMUNITY ASSOCIATION | 384 | 0 |
| FOLSOM LAKE MUTUAL WATER CO | 333 | 0 |
| DONNER SUMMIT PUBLIC UTILITY DISTRICT | 310 | 11 |
| TAHOE CITY PUD - MADDEN CREEK | 300 | 0 |
| TALMONT RESORT IMPROVEMENT DISTRICT | 300 | 0 |
| AUBURN VALLEY COMMUNITY SERVICE DIS | 290 | 0 |
| HEATHER GLEN COMMUNITY SERVICE DIST | 250 | 2 |
| ALPINE MEADOWS PROPERTY OWNERS ASSO | 250 | 0 |
| HAPPY HOMES MOBILE HOME PARK | 215 | 0 |
| TAHOE CITY PUD - ALPINE PEAKS | 201 | 0 |
| TAHOE CITY PUD - TIMBERLAND | 200 | 0 |
| PLACER CWA - APPLEGATE | 190 | 0 |
| ANDREWS ESTATES | 178 | 0 |
| BAKER RANCH WATER CORP | 150 | 1 |
| RIVERBEND MOBILE HOME & RV PARK | 137 | 1 |
| EMIGRANT GAP MUTUAL WATER CO. | 125 | 0 |
| BARRON LAKE/ROSEBUSH | 114 | 4 |
| PLACER CWA - BIANCHI ESTATES | 110 | 0 |
| GOLDEN HILLS MUTUAL WATER CO | 84 | 0 |
| BIG RISE VILLAGE | 78 | 1 |
| OAKLANE MOBILE VILLAGE, LLC. | 75 | 0 |
| GOLD HILL MOBILEHOME PARK | 75 | 0 |
| MOKELUMNE MOBILE SENIOR PARK | 55 | 1 |
| PLACER CWA - MONTE VISTA | 46 | 1 |
| EDGEWATER MOBILE HOME PARK | 40 | 42 |
| EVERGREEN MOBILE HOME PARK | 36 | 2 |
| SHASTINA MOBILE ESTATES | 32 | 1 |
| ROSECREST MUTUAL | 31 | 1 |
| SEGURA'S RV PARK LLC | 27 | 4 |
| WHEATLAND PARK ESTATES | 26 | 0 |
TRI Facilities (11)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Sierra Pacific Industries Lincoln Div | 86.1K lbs |
| 2 | H.b. Fuller Co | 23.4K lbs |
| 3 | Tsi Semiconductors America, LLC | 10.8K lbs |
| 4 | Gladding McBean | 5.5K lbs |
| 5 | Alpha/dyno Nobel | 1.0K lbs |
| 6 | Robert Bosch Semiconductor LLC | 238 lbs |
| 7 | Greenheck Fan Corp - Rocklin California | 2 lbs |
| 8 | Martis Valley Plant | 0 lbs |
| 9 | Vulcan Materials Co Roseville Asphalt Plant | 0 lbs |
| 10 | Cemex Lincoln | 0 lbs |
| 11 | Keysight Technologies Inc | 0 lbs |
Cities in Placer (19)
Frequently Asked Questions
What is the environmental risk level in Placer, California? ▼
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How many toxic release facilities are in Placer? ▼
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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.