Loading city report
Preparing Santa Clarita environmental records...
Public environmental health records for water, air, land, infrastructure, incidents, and community indicators.
Toxin Scout summarizes public records from government and public datasets. Data can be delayed, incomplete, approximate, matched at non-parcel levels, or have accuracy problems as a result of this product's beta status, so verify important findings against the linked source records.
Loading city report
Preparing Santa Clarita environmental records...
Drinking water compliance, PFAS records, natural water body health, discharge permits, and water-quality monitoring records for Santa Clarita.
Public water-system records for Santa Clarita, CA from EPA SDWIS.
Santa Clarita Valley Water Agency
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City appears in system name · Serves 294,090 people
Data from EPA SDWIS
PFAS screening separates EPA UCMR5 drinking-water monitoring from nearby DoD PFAS investigation-site records; EPA samples shown are from Jun 2023 to Apr 2024.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
12 PFAS sample results above EPA limits
Sample period: Jun 2023 to Dec 2023
UCMR5 results are sampled by public water system, not every household. Confirm your water provider before treating these as tap-water results for a specific address.
| Chemical | Concentration (µg/L) | EPA Limit (µg/L) | Sample date | Over Limit |
|---|---|---|---|---|
| PFOA | 0.0169 | 0.0040 | 2023-12-06 | Yes |
| PFOA | 0.0144 | 0.0040 | 2023-12-06 | Yes |
| PFOA | 0.0110 | 0.0040 | 2023-06-07 | Yes |
| PFOA | 0.0109 | 0.0040 | 2023-06-21 | Yes |
| PFOA | 0.0106 | 0.0040 | 2023-06-07 | Yes |
| PFOS | 0.0075 | 0.0040 | 2023-12-06 | Yes |
| PFOS | 0.0064 | 0.0040 | 2023-06-07 | Yes |
| PFOA | 0.0063 | 0.0040 | 2023-06-07 | Yes |
| PFOS | 0.0056 | 0.0040 | 2023-12-06 | Yes |
| PFOS | 0.0048 | 0.0040 | 2023-06-07 | Yes |
| PFOA | 0.0046 | 0.0040 | 2023-06-21 | Yes |
| PFOS | 0.0043 | 0.0040 | 2023-06-07 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Santa Clarita drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation site records surfaced within the search radius.
No health-relevant impaired water body records surfaced within 10 km in EPA ATTAINS.
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with violations surfaced for this city report.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
Reviewed: source records as of Jan 5005
Air quality data from EPA monitoring stations, facility emissions inventories, and area-level air-quality designations in this city.
Los Angeles County
Reported: Dec 2020
EPA national average is ~30 per million
According to EPA, a cancer risk of 40-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 40 may develop cancer from that exposure. This is in addition to cancer risk from all other causes.
Top local emission sources
Data from EPA AirToxScreen
EPA designates an area as nonattainment when air quality does not meet federal health-based standards (NAAQS) for a specific pollutant.
Los Angeles-South Coast Air Basin: Ozone
NonattainmentExtreme8-Hour Ozone (2015 Standard)
Original designation: Aug 2018
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Los Angeles-South Coast Air Basin: PM2.5
NonattainmentSeriousPM-2.5 (2012 Standard)
Original designation: Apr 2015
Health effects (EPA): Cardiovascular disease, respiratory illness, premature death (EPA)
Los Angeles County-South Coast Air Basin: Lead
NonattainmentLead (2008 Standard)
Original designation: Dec 2010
Health effects (EPA): Neurological damage, kidney damage, developmental effects in children (EPA)
Data from EPA Green Book
North Hollywood (Noho) — Los Angeles, California
Annual mean: 23.4 ppb · EPA standard: 100 ppb
Reported: Mar 2026
Annual mean: 0.1 ppm · EPA standard: 0.07 ppm
Annual standard context: 33 exceedance days recorded in the reporting period
Reported: Mar 2026
Piru - Pacific
Annual mean: 0.0 ppm · EPA standard: 0.07 ppm
Annual standard context: 1 exceedance day recorded in the reporting period
Reported: Mar 2026
Data from EPA AQS
Facilities regulated under the Clean Air Act. CAA HPV flags indicate serious noncompliance such as exceeding emission limits.
No facility records with active violation or noncompliance flags surfaced in EPA ECHO.
Reviewed: active/open records as of Q4 2025
Data from EPA ECHO
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Aerospace Dynamics International Inc.
Reported: 2024
Hasa Inc
Reported: 2024
Holliday Rock - Santa Clarita Facility
Reported: 2024
Contaminated sites, waste facilities, cleanup records, and industrial operations in this city.
Reviewed: source query run Jun 2026
Reviewed: source query run Jun 2026
Facilities with hazardous-waste handler records under RCRA in the reviewed 5-mile city-center search area. Active handler status is separate from air, water, or other ECHO compliance violations, which are shown in their own sections.
Active RCRA handler records in the reviewed city search area
No underground storage tank records with active/open release status surfaced within 2 miles.
Data from EPA UST Finder
Reviewed: reporting year 2024
Formerly Used Defense Sites are properties previously owned by, leased to, or otherwise possessed by the United States and under the jurisdiction of the Secretary of Defense. The FUDS program addresses environmental restoration at these properties.
Open data source: USACE FUDSReported: Jun 2026
Reported: Jun 2026
Reported: Jun 2026
Sites regulated by the Mine Safety and Health Administration, including mines, sand and gravel operations, and portable crushers. Status and type are from the MSHA Mine Data Retrieval System. Records with active/intermittent status dates older than 5 years are shown as older records rather than current active sites.
No recently updated active or intermittent MSHA-regulated sites within 5 miles.
Reviewed: status dates within last 5 years
Data from MSHA
Los Angeles County, CA
Reported: Mar 2026
Los Angeles County is EPA Radon Zone 2 (moderate potential). EPA defines Zone 2 counties as having predicted average indoor screening levels between 2 pCi/L and 4 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
Flood-map status, chemical accident risk, nuclear facilities, pipeline incidents, and community health indicators in this city.
FEMA's National Flood Hazard Layer maps flood risk. Properties in a Special Flood Hazard Area are required to carry flood insurance if they have a federally backed mortgage.
Minimal flood hazard — outside the 1% and 0.2% annual chance floodplains.
Risk Management Program facilities handle extremely hazardous substances (e.g., chlorine, ammonia, propane). EPA requires these facilities to plan for worst-case chemical releases.
No facility records with recent chemical accidents surfaced for this property within the last five years.
Data from EPA ECHO
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
Los Angeles County, CaliforniaPop. 9,721,138
Reported: Mar 2026
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking Water Violations
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 6,317 | 6,373 | 7,972 |
| Poor or Fair Health | 18.2% | 15.8% | 14.2% |
| Poor Physical Health Days | 3.5 | 3.1 | 3.3 |
| Poor Mental Health Days | 5.1 | 4.7 | 4.8 |
| Adult Smoking | 11.0% | 8.8% | 15.0% |
| Adult Obesity | 28.5% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 13.4 | 7.1 | 7.3 |
| Drinking Water Violations | 1 | 1 | N/A |
| Diabetes Prevalence | 11.7% | 10.8% | 9.6% |
| Life Expectancy | 80.1 | 79.9 | 77.6 |