North Gualala Water Company
EPA ID: CA2310007 · 2,593 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for North Gualala Water Company (CA2310007): no drinking-water violations recorded since 2021. Searching the federal compliance records for North Gualala Water Company turns up no EPA violations in any contaminant category the file covers; the utility's service area includes approximately 2,593 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for North Gualala Water Company Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with North Gualala Water Company have a median household income of $93,365 and about 4,981 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: On average, 55% of census tracts in the counties mapped to this service area are designated disadvantaged by the federal Climate and Economic Justice Screening Tool (CEJST, 2022 version). Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
North Gualala Water Company's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in California
System Overview
North Gualala Water Company (EPA ID: CA2310007) is a community water system in California that serves approximately 2,593 people from surface water sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
4 of 4 ZIP records with known zones are in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by CA or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for North Gualala Water Company (CA2310007) on EPA.gov.
Frequently Asked Questions
Is North Gualala Water Company water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for North Gualala Water Company in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does North Gualala Water Company serve?
North Gualala Water Company serves approximately 2,593 people across 4 ZIP codes in California.
Where does North Gualala Water Company get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). North Gualala Water Company Water Quality Report, CA. https://zipcheckup.com/water-system/ca2310007/
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title = {{North Gualala Water Company Water Quality Report, CA}},
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