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Review government records associated with Grand Terrace, 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 Grand Terrace, CA from EPA SDWIS.
Colton, City of
PFAS above an official threshold detected in available EPA records.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 46,525 people
Riverside Highland Water Company
Active monitoring or reporting issue detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
City listed in EPA records · Serves 20,188 people
Riverside, City of
PFAS detected below the official threshold used by this report.
Reviewed: active/open records as of Q1 2026
City-area ZIP code · Serves 298,398 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 Feb 2023 to Jan 2025.
Drinking Water PFAS Monitoring
EPA UCMR5 samples public water systems. These results are separate from nearby PFAS cleanup or investigation-site records.
13 PFAS sample results above EPA limits
Sample period: Jul 2023 to Jan 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 |
|---|---|---|---|---|
| PFOS | 0.0180 | 0.0040 | 2023-08-30 | Yes |
| PFOS | 0.0130 | 0.0040 | 2024-01-29 | Yes |
| PFOS | 0.0110 | 0.0040 | 2023-07-25 | Yes |
| PFOA | 0.0059 | 0.0040 | 2023-08-30 | Yes |
| PFOS | 0.0047 | 0.0040 | 2023-07-25 | Yes |
| PFOA | 0.0045 | 0.0040 | 2023-07-25 | Yes |
| PFOS | 0.0041 | 0.0040 | 2024-01-23 | Yes |
| PFOS | 0.0190 | 0.0040 | 2025-01-09 | Yes |
| PFOA | 0.0180 | 0.0040 | 2024-07-22 | Yes |
| PFOA | 0.0150 | 0.0040 | 2025-01-09 | Yes |
| PFHxS | 0.0140 | 0.0100 | 2024-07-22 | Yes |
| PFOS | 0.0120 | 0.0040 | 2024-07-22 | Yes |
| PFHxS | 0.0110 | 0.0100 | 2025-01-09 | Yes |
PFAS detections below EPA limits.
Nearby PFAS Investigation Sites
DoD records are nearby site investigations, not Grand Terrace drinking-water detections. Record names come from the source database and can be broad.
No DoD PFAS investigation records shown for this report.
EPA ATTAINS records identify assessed water bodies that do not meet water-quality standards for designated uses.
East Etiwanda Creek-Santa Ana River
Reported: Nov 2026
Health-relevant causes: Metals (other Than Mercury), Pathogens, Pesticides
Affected uses: Ecological, Recreation
Data from EPA ATTAINS
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
Violation records
Last inspected: Dec 2025
Last inspected: Dec 2025
Data from EPA ECHO
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 Bernardino 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.
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)
Maintenance areas
Previously nonattainment; currently meeting the standard and monitored under an EPA maintenance plan.
Los Angeles-South Coast Air Basin Area
CO · Carbon Monoxide (1971 Standard)
Classification: Serious
Original designation: Nov 1990
Current design value: 6.7 ppm (2023-2025)
Data from EPA Green Book
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Crestline
Annual mean: 0.058 Parts per million
EPA primary exceedance count: 90 (Ozone 8-hour 2015)
Observation year: 2025
Annual mean: 15.1 Micrograms/cubic meter (25 C)
Observation year: 2025
Fontana
Annual mean: 0.3 Parts per million
Observation year: 2025
Data from EPA AQS
Reviewed: source records as of Q4 2025
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.
2 sites with active cleanup or investigation
21900 Barton Road, Grand Terrace
0.8 miles away · SAN BERNARDINO County
Reported: Nov 2026
Main Street/Taylor Street, Grand Terrace
1.0 miles away · SAN BERNARDINO 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
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.
More MSHA records matched the search than this preview shows.
No records shown in this group.
Reviewed: status dates within last 5 years
Data from MSHA
San Bernardino County, CA
EPA Radon Zone Map (June 2024 release)
San Bernardino 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.
PHMSA tracks incidents involving natural gas and hazardous liquid pipelines. Incidents include leaks, ruptures, and explosions.
No records dated within the last 5 years surfaced for this city report.
Reviewed: last 5 years
Data from PHMSA
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
San Bernardino County, CaliforniaPop. 2,193,656
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 | 8,917 | 6,373 | 7,972 |
| Poor or Fair Health | 20.9% | 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 | 12.5% | 8.8% | 15.0% |
| Adult Obesity | 38.1% | 27.8% | 34.0% |
| Air Pollution - Particulate Matter | 15.6 | 7.1 | 7.3 |
| Drinking water violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 12.3% | 10.8% | 9.6% |
| Life Expectancy | 76.1 | 79.9 | 77.6 |
EPA testing found PFAS in water samples from the City of Colton. Results dated Jul 25, 2023 to Jan 29, 2024 include PFOS at 0.0041 to 0.018 micrograms per liter and PFBS at 0.0032 to 0.01 micrograms per liter.
EPA testing found PFAS in water samples from Riverside Highland Water Company. Results dated Jul 22, 2024 to Jan 9, 2025 include PFOS at 0.012 to 0.019 micrograms per liter and PFOA at 0.015 to 0.018 micrograms per liter.
EPA testing found PFAS in water samples from the City of Riverside. Results dated Feb 7, 2023 to Nov 20, 2023 include PFPeA at 0.0033 to 0.0067 micrograms per liter and PFHxA at 0.0032 to 0.0041 micrograms per liter.
Check with the utility that serves your address for its testing results.
EPA drinking water records on this page list 1 violation for the City of Colton.
EPA drinking water records on this page list 1 violation for Riverside Highland Water Company, including 1 marked active.
The EPA drinking water records available here list no violations for the City of Riverside.
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 Grand Terrace.
The monitoring station at Crestline recorded an annual average of 0.058 Parts per million for ozone in 2025.
The monitoring station at Crestline recorded an annual average of 15.1 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The monitoring station at Fontana recorded an annual average of 0.3 Parts per million for carbon monoxide in 2025.
Download 2025 EPA annual monitor dataCurrent air quality on AirNow
The radon data for Grand Terrace covers San Bernardino 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 or brownfield sites were returned for this city report.
The county data for Grand Terrace reports a life expectancy of 76.1 years in San Bernardino 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 Grand Terrace reports 8,917 years of life lost to deaths before age 75 per 100,000 residents in San Bernardino 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 Grand Terrace lists fine-particle pollution (PM2.5) at 15.6 micrograms per cubic meter in San Bernardino County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.
Federal pipeline records list an incident involving Southern California Gas Co near Grand Terrace on Aug 16, 2013. The reported release was natural gas.