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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.
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Preparing Arroyo Grande environmental records...
Drinking water compliance, PFAS records, natural water body health, discharge permits, and water-quality monitoring records for Arroyo Grande.
Public water-system records for Arroyo Grande, CA from EPA SDWIS.
City of Arroyo Grande Utilities Division
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 17,963 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 Dec 2023 to Sep 2024.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
6 PFAS sample results above EPA limits
Sample period: Dec 2023 to Sep 2024
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 |
|---|---|---|---|---|
| PFOS | 0.0068 | 0.0040 | 2024-06-19 | Yes |
| PFOA | 0.0058 | 0.0040 | 2024-06-19 | Yes |
| PFOS | 0.0056 | 0.0040 | 2024-09-10 | Yes |
| PFOA | 0.0046 | 0.0040 | 2024-09-10 | Yes |
| PFOS | 0.0043 | 0.0040 | 2023-12-19 | Yes |
| PFOA | 0.0041 | 0.0040 | 2023-12-19 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Arroyo Grande 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
Reviewed: source records as of Q4 2025
Air quality data from EPA monitoring stations, facility emissions inventories, and area-level air-quality designations in this city.
San Luis Obispo County
Reported: Dec 2020
EPA national average is ~30 per million
According to EPA, a cancer risk of 30-in-1-million means that for every 1 million people continuously exposed to these air toxics over a 70-year lifetime, an estimated 30 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
This area meets EPA's National Ambient Air Quality Standards (NAAQS) for all criteria pollutants
No nonattainment designations apply to this location.
Cdf — Arroyo Grande, California
Annual mean: 19.7 μg/m³ · EPA standard: 150 μg/m³
Reported: Mar 2026
Annual mean: 5.5 μg/m³ · EPA standard: 9 μg/m³
Reported: Mar 2026
Mesa2 — Nipomo, California
Annual mean: 5.7 μg/m³ · EPA standard: 9 μg/m³
Reported: Mar 2026
Data from EPA AQS
Reviewed: source records as of Q4 2025
Contaminated sites, waste facilities, cleanup records, and industrial operations in this city.
Reviewed: source query run Sep 2026
Reviewed: source query run Sep 2026
No underground storage tank records with active/open release status surfaced within 2 miles.
Data from EPA UST Finder
San Luis Obispo County, CA
Reported: Mar 2026
San Luis Obispo 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.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.
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
Nuclear Regulatory Commission licensed facilities. The Emergency Planning Zone extends 10 miles for plume exposure and 50 miles for the ingestion pathway.
Reported: Mar 2026
This city report includes a facility within the 10-mile plume exposure Emergency Planning Zone.
1 reactor · Operated by Pacific Gas & Electric Co.
Reported: Mar 2026
This city report includes a facility within the 10-mile plume exposure Emergency Planning Zone.
1 reactor · Operated by Pacific Gas & Electric Co.
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
San Luis Obispo County, CaliforniaPop. 282,013
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 | 5,707 | 6,373 | 7,972 |
| Poor or Fair Health | 14.1% | 15.8% | 14.2% |
| Poor Physical Health Days | 3.4 | 3.1 | 3.3 |
| Poor Mental Health Days | 5.1 | 4.7 | 4.8 |
| Adult Smoking | 11.7% | 8.8% | 15.0% |
| Adult Obesity | 30.5% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 7.0 | 7.1 | 7.3 |
| Drinking Water Violations | 1 | 1 | N/A |
| Diabetes Prevalence | 8.9% | 10.8% | 9.6% |
| Life Expectancy | 81.2 | 79.9 | 77.6 |