ZipCheckup grade for 93446: C.
A mixed picture - some signals here are worth your attention.
Your top priority: match a filter's certification to the violations (12 health-based violations). Check your ZIP → NSF certified filters
Paso Robles, CA (93446): PFAS Detected in Mapped Water Systems - 59/100
EPA data combined for 8 water systems mapped to this ZIP (largest mapped system: City of Paso Robles Water Division)
Health-based violation records by water system:
- Heritage Ranch Csd (10)
- CA4000775 (2)
EPA records for the water systems mapped to 93446 in Paso Robles, CA contain 12 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 12 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 12 health-based violations (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 30 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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One critical finding sits on record for Paso Robles (93446), unaccompanied by high-priority items.
Score Breakdown
Overall Home Safety Score: 59/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
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 (9) CRITICAL
Your Water System
ZIP code 93446 in Paso Robles, California is mapped to the water system City of Paso Robles Water Division (EPA ID: CA4010007). This system provides water to approximately 31,176 people from surface water sources.
There are 8 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Paso Robles Water Division | CA4010007 | 31,176 | Surface water |
| Templeton Csd | CA4010019 | 8,011 | Groundwater |
| Heritage Ranch Csd | CA4010012 | 2,956 | Surface water |
| San Miguel Community Services District | CA4010010 | 2,600 | Groundwater |
| Walnut Hills Mutual Water Company | CA4000670 | 486 | Groundwater |
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
- 93465 (Templeton) - 6 mi
- 93447 (Paso Robles) - 8 mi
- 93422 (Atascadero) - 12 mi
- 93423 (Atascadero) - 15 mi
- 93430 (Cayucos) - 17 mi
- 93461 (Shandon) - 18 mi
- 93435 (Harmony) - 19 mi
- 93432 (Creston) - 19 mi
- 93451 (San Miguel) - 19 mi - 10 violations recorded for mapped water systems
- 93426 (Bradley) - 19 mi - 10 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 City of Paso Robles Water Division (CA4010007) 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 93446. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.
Detected compounds: PFPeA, PFHxA, PFBS, PFOA, PFHpA, PFBA, PFHxS.
Highest measured level: 0.022 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.
Health Risks from Detected Contaminants
Fluoride
Moderate RiskEPA reference value: 4 mg/L (estándar secundario: 2.0 mg/L) · 2 violations on record
Tooth & bone damage at high levels
At-risk groups: children aged 8 and younger during tooth development
Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, activated alumina, distillation · Find a filter →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) MODERATE
Possible home maintenance concerns - talk to a local expert.
Call (855) 384-4856Paid Partner This is a free service. You will be connected with an independent service provider. We may receive compensation.
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 Paso Robles
Based on local data for ZIP 93446, 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 Paso Robles has 30 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 93446 was built around 1982. 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 CostsWindow Replacement
The median build year of homes in Paso Robles is 1982; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
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 93446 safe to drink?
EPA SDWIS records 12 violations since 2021 across the water systems mapped to ZIP 93446 (primary system: City of Paso Robles Water Division), including 12 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 93446's water come from?
The recorded water source for City of Paso Robles Water Division, a system mapped to ZIP code 93446, is Surface water. This system serves approximately 31,176 people.
How does Paso Robles water compare to the national average?
Paso Robles's Home Safety Score ranks lower than 82% of U.S. ZIP codes, and lower than 81% of ZIP codes within California.
How can I get my water tested in Paso Robles?
If City of Paso Robles Water Division 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 93446?
93446 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 93446's water?
Yes, PFAS have been detected in samples from water systems mapped to 93446. 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 93446?
FEMA records contain 30 flood insurance claims filed in ZIP code 93446; the recorded rated-zone value (the most frequent one if there are several claims) is A, 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). Paso Robles, CA (93446): PFAS Detected in Mapped Water Systems - 59/100. https://zipcheckup.com/report/93446/
@misc{zipcheckup-report-93446,
author = {{ZipCheckup}},
title = {{Paso Robles, CA (93446): PFAS Detected in Mapped Water Systems - 59/100}},
year = {2026},
url = {https://zipcheckup.com/report/93446/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 93446
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 93465 | Templeton, CA | 5.9 mi | B | 0 |
| 93447 | Paso Robles, CA | 8.0 mi | N/A | 0 |
| 93422 | Atascadero, CA | 11.6 mi | C | 0 |
| 93423 | Atascadero, CA | 15.2 mi | N/A | 0 |
| 93430 | Cayucos, CA | 17.3 mi | N/A | 0 |
| 93461 | Shandon, CA | 18.4 mi | N/A | 0 |
| 93435 | Harmony, CA | 18.6 mi | N/A | 0 |
| 93432 | Creston, CA | 18.6 mi | N/A | 0 |
| 93451 | San Miguel, CA | 18.9 mi | N/A | 10 |
| 93426 | Bradley, CA | 19.2 mi | N/A | 10 |
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