Oceano, CA (93445): 13 Health-Based Violations Recorded for Mapped Water Systems
EPA data combined for 6 water systems mapped to this ZIP (largest mapped system: Oceano Commission Services District)
Health-based violation records by water system:
EPA records for the water systems mapped to 93445 in Oceano, CA contain 37 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 13 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 13 health-based violations and 24 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
- PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
- Radon EPA Zone 2 - county-level radon potential, not a home measurement.
- Flood 36 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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2 critical alerts are on file for Oceano (93445), with 0 high-priority findings below them.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
The score is withheld for this ZIP: a water system serving it has EPA UCMR5 PFAS results above the value of an EPA PFAS MCL (with compliance required from 2029), and the current score input does not include that system. We will show the score again once it is recalculated with that system's PFAS results included.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) CRITICAL
Your Water System
ZIP code 93445 in Oceano, California is mapped to the water system Oceano Commission Services District (EPA ID: CA4010005). This system provides water to approximately 7,601 people from surface water sources.
There are 6 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Oceano Commission Services District | CA4010005 | 7,601 | Surface water |
| Woodlands Development | CA4010081 | 3,862 | Surface water |
| Halcyon Water System | CA4000501 | 110 | Groundwater |
| Woodland Park Mutual Water Company | CA4000506 | 538 | Groundwater |
| City of Arroyo Grande Utilities Division | CA4010001 | 17,963 | Surface water |
Other Water Quality Reports in California
- 90001 (Los Angeles)
- 90002 (Los Angeles)
- 90003 (Los Angeles)
- 90004 (Los Angeles)
- 90005 (Los Angeles)
- 90006 (Los Angeles)
- 90007 (Los Angeles)
- 90008 (Los Angeles)
- 90009 (Los Angeles)
- 90010 (Los Angeles)
- 90011 (Los Angeles)
- 90012 (Los Angeles)
- 90013 (Los Angeles)
- 90014 (Los Angeles)
- 90015 (Los Angeles)
- 90016 (Los Angeles)
- 90017 (Los Angeles)
- 90018 (Los Angeles)
- 90019 (Los Angeles)
- 90020 (Los Angeles)
Nearby Water Quality Reports
- 93475 (Oceano) - <1 mi
- 93433 (Grover Beach) - 1 mi
- 93421 (Arroyo Grande) - 2 mi
- 93483 (Grover Beach) - 2 mi
- 93448 (Pismo Beach) - 3 mi
- 93449 (Pismo Beach) - 5 mi - 4 violations recorded for mapped water systems
- 93444 (Nipomo) - 8 mi - 13 violations recorded for mapped water systems
- 93409 (San Luis Obispo) - 8 mi - 1 violation recorded for mapped water systems
- 93424 (Avila Beach) - 9 mi
- 93420 (Arroyo Grande) - 9 mi - 37 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Oceano Commission Services District (CA4010005) on EPA.gov.
3 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
Compliance History
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 93445. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFBS, PFOS, PFOA, PFHxS, PFPeA, PFHxA.
Highest measured level: 0.011 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Oceano
Based on local data for ZIP 93445, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Oceano has 36 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 93445 was built around 1988. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Active weather alerts in California increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 93445 safe to drink?
EPA SDWIS records 37 violations since 2021 across the water systems mapped to ZIP 93445 (primary system: Oceano Commission Services District), including 13 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 93445's water come from?
The recorded water source for Oceano Commission Services District, a system mapped to ZIP code 93445, is Surface water. This system serves approximately 7,601 people.
How can I get my water tested in Oceano?
If Oceano Commission Services District supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
What is the radon risk for 93445?
93445 is mapped to a county in EPA Radon Zone 2 (moderate county-level radon potential; EPA recommends testing every home), located in San Luis Obispo County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 93445's water?
Yes, PFAS have been detected in samples from water systems mapped to 93445. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 93445?
FEMA records contain 36 flood insurance claims filed in ZIP code 93445; the recorded rated-zone value (the most frequent one if there are several claims) is A06, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Oceano, CA (93445): 13 Health-Based Violations Recorded for Mapped Water Systems. https://zipcheckup.com/report/93445/
@misc{zipcheckup-report-93445,
author = {{ZipCheckup}},
title = {{Oceano, CA (93445): 13 Health-Based Violations Recorded for Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/93445/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 93445
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 93475 | Oceano, CA | <1 mi | N/A | 0 |
| 93433 | Grover Beach, CA | 1.4 mi | B | 0 |
| 93421 | Arroyo Grande, CA | 1.5 mi | N/A | 0 |
| 93483 | Grover Beach, CA | 1.6 mi | N/A | 0 |
| 93448 | Pismo Beach, CA | 3.4 mi | N/A | 0 |
| 93449 | Pismo Beach, CA | 4.6 mi | B | 4 |
| 93444 | Nipomo, CA | 8.4 mi | B | 13 |
| 93409 | San Luis Obispo, CA | 8.4 mi | B | 1 |
| 93424 | Avila Beach, CA | 8.8 mi | N/A | 0 |
| 93420 | Arroyo Grande, CA | 9.2 mi | C | 37 |
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