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Review government records associated with Mendota, California.
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Preparing Mendota environmental records...
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 Mendota, CA from EPA SDWIS.
Mendota, City of
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 11,404 people
Data from EPA SDWIS
Reviewed: source records as of Q1 2026
EPA UCMR5 — No PFAS detection records shown for these water systems
Open data source: EPA UCMR5DoD PFAS — No investigation records shown for this report
Open data source: DoD PFASEPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
Mowry Lake-Fresno Slough
Reported: Nov 2026
Health-relevant causes: Mercury, Metals (other Than Mercury)
Affected uses: Fishconsumption, Other
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.
Fresno County
Assessment year: 2020
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 modeled source groups
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.
San Joaquin Valley: Ozone
NonattainmentExtreme8-Hour Ozone (2015 Standard)
Original designation: Aug 2018
Health effects (EPA): Respiratory inflammation, aggravation of asthma, reduced lung function (EPA)
San Joaquin Valley: PM2.5
NonattainmentSeriousPM-2.5 (2012 Standard)
Original designation: Apr 2015
Health effects (EPA): Cardiovascular disease, respiratory illness, premature death (EPA)
San Joaquin Valley 1997 PM2.5 Annual: PM2.5
NonattainmentSeriousPM-2.5 (1997 Standard)
Original designation: Apr 2005
Health effects (EPA): Cardiovascular disease, respiratory illness, premature death (EPA)
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Madera-City
Annual mean: 0.042 Parts per million
EPA primary exceedance count: 3 (Ozone 8-hour 2015)
Observation year: 2025
Annual mean: 30.2 Micrograms/cubic meter (25 C)
Observation year: 2025
Annual mean: 9.3 Micrograms/cubic meter (LC)
Observation year: 2025
Data from EPA AQS
TRI releases are self-reported annual totals (calendar year 2024). Hover fugitive or stack for definitions.
Federal Bureau of Prisons Fci Mendota
Reported: 2024
Reviewed: source query run Nov 2026
Brownfield sites are properties where redevelopment is complicated by the presence of hazardous substances.
Open data source: Search EPA ECHO1 site with active cleanup or investigation status
Belmont Avenue And Derrick Avenue, Mendota
Reported: Feb 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.
No state cleanup site records with active investigation or remediation status surfaced nearby.
Reviewed: active/open records as of CA DTSC EnviroStor (live query)
Data from EPA ECHO
No release reports shown in this group.
Reviewed: active/open records as of 2018
Data from EPA UST Finder
Toxics Release Inventory data — chemicals disposed on-site at reporting facilities.
Federal Bureau of Prisons Fci Mendota
Open data source: View EPA TRI facility recordNo MSHA mine or extraction site records shown for this report.
Fresno County, CA
EPA Radon Zone Map (June 2024 release)
Fresno 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.
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.
Fresno County, CaliforniaPop. 1,015,190
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 | 8,530 | 6,373 | 7,972 |
| Poor or Fair Health | 21.4% | 15.8% | 14.2% |
| Poor Physical Health Days | 4.1 | 3.1 | 3.3 |
| Poor Mental Health Days | 5.2 | 4.7 | 4.8 |
| Adult Smoking | 13.9% | 8.8% | 15.0% |
| Adult Obesity | 36.8% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 11.7 | 7.1 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 12.6% | 10.8% | 9.6% |
| Life Expectancy | 76.6 | 79.9 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Mendota.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 11 violations for the City of Mendota.
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 Mendota.
The monitoring station at Madera-City recorded an annual average of 0.042 Parts per million for ozone in 2025.
The monitoring station at Madera-City recorded an annual average of 30.2 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Madera-City recorded an annual average of 9.3 Micrograms/cubic meter (LC) for fine particles (PM2.5) in 2025.
The radon data for Mendota covers Fresno County. EPA places this area in Zone 2, with a predicted average indoor radon screening level of 2 to 4 picocuries per liter.
No Superfund sites were returned for this city report.
This city report shows 1 brownfield site: Proposed Mendota Junior High School.
The county data for Mendota reports a life expectancy of 76.6 years in Fresno 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 Mendota reports 8,530 years of life lost to deaths before age 75 per 100,000 residents in Fresno 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 Mendota lists fine-particle pollution (PM2.5) at 11.7 micrograms per cubic meter in Fresno County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.