San Francisco, 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 San Francisco in California · Population: 836,321
TRI sites such as Golden Gate National Recreation Area; Central Concrete Supply Co. Inc. - Bode; US Mint San Francisco Ca; SDWIS systems such as PRESIDIO OF SAN FRANCISCO; JOSHUA VALLEY UTILITY COMPANY; MILE HIGH MOBILE HOME PARK; NPL sites such as Hunters Point Naval Shipyard anchor San Francisco, CA's EPA extract. Derived burden score 27/100 (Low 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 San Francisco include LONGVIEW MOBILE HOME PARK; THE HIDEOUT AT GLENWOOD SPRINGS; SIX ACRES WATER COMPANY, while Golden Gate National Recreation Area leads reported TRI pounds among local Form R filers. AQS median AQI 33 / peak 94 in 2024.
Burden score 27/100 (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 San Francisco -- 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 San Francisco, CA: EPA TRI 2023 reporting year
Same facilities, both years
-100.0%
2 facilities that filed in 2022 and 2023
Whole inventory
-100.0%
35 lb → 0 lb, every facility that filed
- San Francisco, CA's total reported releases fell from 35 lb in 2022 to 0 lb in 2023, based on EPA TRI filings.
- San Francisco, CA's air releases fell from 35 lb in 2022 to 0 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 | 254 (76%) | 80 | 0 | 94 |
| 2023 | 299 (82%) | 65 | 1 | 117 |
| 2022 | 260 (71%) | 104 | 0 | 88 |
| 2021 | 255 (70%) | 110 | 0 | 86 |
| 2020 | 227 (62%) | 131 | 3 | 223 |
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 (11)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| PRESIDIO OF SAN FRANCISCO | 3,500 | 0 |
| JOSHUA VALLEY UTILITY COMPANY | 1,500 | 0 |
| MILE HIGH MOBILE HOME PARK | 209 | 0 |
| RIDGEWOOD MOBILE HOME PARK | 196 | 0 |
| BY WAY MOBILE HOME PARK | 150 | 0 |
| LONGVIEW MOBILE HOME PARK | 147 | 2 |
| THE HIDEOUT AT GLENWOOD SPRINGS | 94 | 2 |
| SIX ACRES WATER COMPANY | 66 | 10 |
| TAYLORS LANDING RV PARK | 48 | 0 |
| SONOMA COUNTY MUTUAL WATER COMPANY | 40 | 83 |
| SUNRISE MOBILEHOME PARK | 37 | 0 |
TRI Facilities (6)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Golden Gate National Recreation Area | 89 lbs |
| 2 | Central Concrete Supply Co. Inc. - Bode | 75 lbs |
| 3 | US Mint San Francisco Ca | 7 lbs |
| 4 | Treasure Island | 0 lbs |
| 5 | R.j. McGlennon Co Inc. | 0 lbs |
| 6 | San Francisco (a) | 0 lbs |
Superfund Sites (1)
| Site Name | Status | HRS Score |
|---|---|---|
| Hunters Point Naval Shipyard | NPL Site | 48.77 |
Cities in San Francisco (2)
Frequently Asked Questions
What is the environmental risk level in San Francisco, California? ▼
Are there Superfund sites in San Francisco? ▼
How many toxic release facilities are in San Francisco? ▼
What is the air quality in San Francisco? ▼
Is the drinking water safe in San Francisco? ▼
What environmental agencies cover San Francisco? ▼
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.