ZipCheckup grade for 95422: A.
Checked records flag no major concern; missing data is unknown.
Clearlake, CA (95422): PFAS Detected in Mapped Water Systems - 97/100
EPA data combined for 5 water systems mapped to this ZIP (largest mapped system: Highlands Mutual Water Company)
Health-based violation records by water system:
EPA records for the water systems mapped to 95422 in Clearlake, CA contain 4 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 4 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 4 health-based violations (since 2021).
- Lead The reported 90th-percentile lead result of 0.0046 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 156 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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The high-priority classification level in safety records for Clearlake (95422) accounts for 1 condition - the critical-tier section of the same dataset contains no findings at all.
Score Breakdown
Overall Home Safety Score: 97/100
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 (7) CRITICAL
Your Water System
ZIP code 95422 in Clearlake, California is mapped to the water system Highlands Mutual Water Company (EPA ID: CA1710003). This system provides water to approximately 7,772 people from surface water sources.
There are 5 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Highlands Mutual Water Company | CA1710003 | 7,772 | Surface water |
| Golden State Water Company-clearlake System | CA1710002 | 4,644 | Surface water |
| Konocti County Water District | CA1710006 | 5,928 | Surface water |
| Clearlake Oaks County Water District | CA1710001 | 2,359 | Surface water |
| Lake County Csa 2 - Spring Valley | CA1710018 | 1,531 | 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
- 95424 (Clearlake Park) - <1 mi
- 95457 (Lower Lake) - 5 mi
- 95443 (Glenhaven) - 7 mi
- 95423 (Clearlake Oaks) - 8 mi - 4 violations recorded for mapped water systems
- 95451 (Kelseyville) - 8 mi
- 95426 (Cobb) - 11 mi - 3 violations recorded for mapped water systems
- 95458 (Lucerne) - 12 mi
- 95467 (Hidden Valley Lake) - 12 mi
- 95461 (Middletown) - 12 mi - 3 violations recorded for mapped water systems
- 95435 (Finley) - 13 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Highlands Mutual Water Company (CA1710003) on EPA.gov.
4 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 95422.
Detected compounds: PFBA, PFPeA.
Highest measured level: 0.0082 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) 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 Clearlake
Based on local data for ZIP 95422, 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 Clearlake has 156 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 95422 was built around 1974. 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 Clearlake is 1974; 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
Homes built around 1974 may be on their second or third roof. A professional inspection can catch damage before leaks start.
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 95422 safe to drink?
EPA SDWIS records 4 violations since 2021 across the water systems mapped to ZIP 95422 (primary system: Highlands Mutual Water Company), including 4 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 95422's water come from?
The recorded water source for Highlands Mutual Water Company, a system mapped to ZIP code 95422, is Surface water. This system serves approximately 7,772 people.
How does Clearlake water compare to the national average?
Clearlake's Home Safety Score ranks better than 88% of U.S. ZIP codes, and at or above 91% within California.
How can I get my water tested in Clearlake?
If Highlands Mutual Water Company 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.
Is lead a concern in 95422 tap water?
The Lead and Copper Rule record selected for 95422 reports a 90th-percentile lead result of 0.0046 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 95422?
95422 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Lake 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 95422's water?
Yes, PFAS have been detected in samples from water systems mapped to 95422. 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 95422?
FEMA records contain 156 flood insurance claims filed in ZIP code 95422; the recorded rated-zone value (the most frequent one if there are several claims) is A05, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Clearlake, CA (95422): PFAS Detected in Mapped Water Systems - 97/100. https://zipcheckup.com/report/95422/
@misc{zipcheckup-report-95422,
author = {{ZipCheckup}},
title = {{Clearlake, CA (95422): PFAS Detected in Mapped Water Systems - 97/100}},
year = {2026},
url = {https://zipcheckup.com/report/95422/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 95422
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 95424 | Clearlake Park, CA | 1.0 mi | N/A | 0 |
| 95457 | Lower Lake, CA | 5.2 mi | N/A | 0 |
| 95443 | Glenhaven, CA | 7.0 mi | N/A | 0 |
| 95423 | Clearlake Oaks, CA | 7.6 mi | N/A | 4 |
| 95451 | Kelseyville, CA | 7.7 mi | A | 0 |
| 95426 | Cobb, CA | 10.7 mi | N/A | 3 |
| 95458 | Lucerne, CA | 11.5 mi | A | 0 |
| 95467 | Hidden Valley Lake, CA | 11.8 mi | A | 0 |
| 95461 | Middletown, CA | 12.1 mi | N/A | 3 |
| 95435 | Finley, CA | 13.3 mi | N/A | 0 |
Nearby ZIP Code Reports
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ZIP 95422 scores in the top tier nationally.