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Review government records associated with Morro Bay, California.
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The Morro Bay Water Division links to annual drinking water quality reports. Check the reporting year and confirm that the city supplies your address before using the results. Ask the Water Division about current advisories. For bay or beach conditions, check recreational water notices from the relevant local agency.
Check your water bill for your utility name and confirm the reporting year. City of Morro Bay 2025 water quality report (PDF). For historical water hardness measurements, see the 2024 Morro Bay hardness measurements (PDF).
Public water-system records for Morro Bay, CA from EPA SDWIS.
Morro Bay Pw Dept - Water Division
No active drinking-water issues detected in EPA SDWIS.
Reviewed: active/open records as of Q1 2026
Purchased or imported water record · Serves 13,757 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 PFASNo health-relevant impairment records shown among the assessment records in this report.
Reviewed: source records as of 2026
NPDES permits regulate pollutant discharges into U.S. waterways. Facilities must report compliance quarterly.
No NPDES-permitted facility records with current violation flags surfaced for this city report.
Reviewed: active/open records as of Q4 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 Luis Obispo 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
No EPA nonattainment designation records shown for this report.
EPA annual monitor summaries describe past measurements. For current air quality, see AirNow.
Atascadero
Annual mean: 8.3 Parts per billion
Observation year: 2025
Annual mean: 0.036 Parts per million
Observation year: 2025
Annual mean: 12.2 Micrograms/cubic meter (25 C)
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
1290 EMBARCADERO, MORRO BAY
0.8 miles away · SAN LUIS OBISPO County
Reported: Nov 2026
4000 HIGHWAY 1, MORRO BAY
2.6 miles away · SAN LUIS OBISPO County
Reported: Nov 2026
Data from EPA ECHO
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 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 Luis Obispo County, CA
EPA Radon Zone Map (June 2024 release)
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.
FEMA flood zones describe mapped flood hazards. Look up a specific address with FEMA.
Special Flood Hazard Area — 1% annual chance of flooding (100-year floodplain) with base flood elevation.
Results use an earlier stored RMP inventory. Current EPA ECHO location coverage is unverified.
No EPA ECHO RMP facility records with a usable location matched this city report.
Health outcomes from County Health Rankings. Values shown alongside state and national averages.
San Luis Obispo County, CaliforniaPop. 282,013
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 | 5,707 | 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 violation indicator | Yes | N/A | N/A |
| Diabetes Prevalence | 8.9% | 10.8% | 9.6% |
| Life Expectancy | 81.2 | 79.9 | 77.6 |
This report does not have PFAS sample results for the candidate water systems in Morro Bay.
Check with the utility that serves your address for its testing results.
The EPA drinking water records available here list no violations for Morro Bay Pw Department-Water Division.
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 Morro Bay.
The monitoring station at Atascadero recorded an annual average of 8.3 Parts per billion for nitrogen dioxide in 2025.
The monitoring station at Atascadero recorded an annual average of 0.036 Parts per million for ozone in 2025.
The monitoring station at Atascadero recorded an annual average of 12.2 Micrograms/cubic meter (25 C) for particles (PM10) in 2025.
The radon data for Morro Bay covers San Luis Obispo 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 Morro Bay reports a life expectancy of 81.2 years in San Luis Obispo 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 Morro Bay reports 5,707 years of life lost to deaths before age 75 per 100,000 residents in San Luis Obispo 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 Morro Bay lists fine-particle pollution (PM2.5) at 7.0 micrograms per cubic meter in San Luis Obispo County, California.
The figure is from the 2024 edition of County Health Rankings, a University of Wisconsin program that publishes county health statistics.