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Review government records associated with Imperial Beach, California.
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Check your water bill for your utility name and confirm the reporting year. See EPA’s guide to finding your annual water quality report.
Public water-system records for Imperial Beach, CA from EPA SDWIS.
Sweetwater Authority
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 191,282 people
Cal-Am Water Coronado
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 106,000 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 Oct 2024 to Jul 2025.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
7 PFAS sample results above EPA limits
Sample period: Oct 2024 to Jul 2025
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 | 0.0114 | 0.0040 | 2025-01-14 | Yes |
| PFOA | 0.0094 | 0.0040 | 2024-10-23 | Yes |
| PFOA | 0.0081 | 0.0040 | 2025-04-23 | Yes |
| PFOA | 0.0079 | 0.0040 | 2025-07-17 | Yes |
| PFOS | 0.0057 | 0.0040 | 2024-10-23 | Yes |
| PFOS | 0.0050 | 0.0040 | 2025-07-17 | Yes |
| PFOS | 0.0048 | 0.0040 | 2025-01-14 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Imperial Beach drinking-water detections. Record names come from the source database and can be broad.
Imperial Beach Ca Navalf
Navy · Active
Suspected PFAS record
Remedial investigation underway
Estimated investigation end date: 2034-08
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Tijuana River-Frontal Pacific Ocean
Reported: Nov 2026
Health-relevant causes: Pathogens
Affected uses: Recreation
Data from EPA ATTAINS
To investigate water contamination, check the sampling locations, dates and results below. For tap water records, see Drinking water quality above.
Reviewed: source records as of 2026
Review historical EPA air pollution records, including monitoring and facility emissions where available. For current conditions, check local air quality on AirNow.
San Diego County
Assessment year: 2020
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 modeled source groups
Data from EPA AirToxScreen
EPA designations apply to a specific pollutant and federal air quality standard (NAAQS). EPA can issue a clean-data determination while a formal designation remains in effect.
San Diego County: Ozone
NonattainmentSevere 158-Hour Ozone (2015 Standard)
Original designation: Aug 2018
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
San Diego Area
CO · Carbon Monoxide (1971 Standard)
Classification: Moderate <= 12.7ppm
Original designation: Nov 1990
Current design value: 3.2 ppm (2023-2025)
Historical designations under the revoked 1997 ozone standard
These records describe historical designations. EPA revoked the 1997 ozone standard on April 6, 2015.
San Diego
Historical standard: 0.08 ppm (8-hour)
Historical designation: Maintenance · Subpart 2/Moderate
Original designation: Jun 2004
Open data source: EPA final revocation ruleContinuing requirements have not been verified for this area.
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Chula Vista
Annual mean: 22.4 Parts per billion
Observation year: 2025
Annual mean: 0.044 Parts per million
Observation year: 2025
Annual mean: 24.1 Micrograms/cubic meter (25 C)
Observation year: 2025
Data from EPA AQS
Reviewed: source query run Nov 2026
Reviewed: source query run Nov 2026
State environmental agencies maintain cleanup site databases that include state Superfund, voluntary cleanup, and brownfield remediation programs. These programs track additional sites beyond those on the federal NPL.
3 sites with active cleanup or investigation
OFF ROUTE 75 BORDERING THE LANDING FIELD, IMPERIAL BEACH
0.2 miles away · SAN DIEGO County
Reported: Nov 2026
, Border Field
1.9 miles away · SAN DIEGO County
Reported: Nov 2026
1/2 Mile North of U.S. & Mexico Border, Imperial Beach
0.8 miles away · SAN DIEGO County
Reported: Nov 2026
Data from EPA ECHO
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
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 FUDSNo MSHA mine or extraction site records shown for this report.
San Diego County, CA
EPA Radon Zone Map (June 2024 release)
San Diego County is EPA Radon Zone 3 (low potential). EPA defines Zone 3 counties as having predicted average indoor screening levels below 2 pCi/L.
Radon levels can vary from home to home, so EPA recommends testing the property to know its indoor level.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
No FEMA flood-zone records shown for this report.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
EPA ECHO lists facilities linked to the Risk Management Program. Results include facilities with locations that can be matched. Records may be historical. Current operations, chemical inventories, and recent accident history are unverified.
Reviewed: 2000-present
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
San Diego County, CaliforniaPop. 3,276,208
County Health Rankings edition: 2024
Premature Death
Poor or Fair Health
Poor Physical Health Days
Poor Mental Health Days
Adult Smoking
Adult Obesity
Air Pollution - Particulate Matter
Drinking water violation indicator
Diabetes Prevalence
Life Expectancy
| Indicator | County | State | National |
|---|---|---|---|
| Premature Death | 5,435 | 6,373 | 7,972 |
| Poor or Fair Health | 14.6% | 15.8% | 14.2% |
| Poor Physical Health Days | 3.4 | 3.1 | 3.3 |
| Poor Mental Health Days | 4.8 | 4.7 | 4.8 |
| Adult Smoking | 10.6% | 8.8% | 15.0% |
| Adult Obesity | 23.9% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 13.8 | 7.1 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 9.8% | 10.8% | 9.6% |
| Life Expectancy | 80.8 | 79.9 | 77.6 |
EPA testing found PFAS in water samples from Sweetwater Authority. Results dated Oct 23, 2024 to Jul 17, 2025 include PFBA at 0.0089 to 0.0123 micrograms per liter and PFOA at 0.0079 to 0.0114 micrograms per liter.
Check with the utility that serves your address for its testing results.
The EPA drinking water records available here list no violations for Sweetwater Authority.
EPA drinking water records on this page list 1 violation for Cal-Am Water Coronado.
Check your water bill to identify the utility serving your address. Ask that utility about current drinking water advisories.
Nearby EPA monitoring stations provide annual air quality measurements for Imperial Beach.
The monitoring station at Chula Vista recorded an annual average of 22.4 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Chula Vista recorded an annual average of 0.044 Parts per million for ozone in 2025.
The monitoring station at Chula Vista recorded an annual average of 24.1 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The radon data for Imperial Beach covers San Diego County. EPA places this area in Zone 3, with a predicted average indoor radon screening level below 2 picocuries per liter.
No Superfund or brownfield sites were returned for this city report.
The county data for Imperial Beach reports a life expectancy of 80.8 years in San Diego County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Imperial Beach reports 5,435 years of life lost to deaths before age 75 per 100,000 residents in San Diego County, California. This measure adds up the years lost to early deaths and adjusts for differences in population age.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
The county data for Imperial Beach lists fine-particle pollution (PM2.5) at 13.8 micrograms per cubic meter in San Diego County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.