Water System Report CA

Del Norte Mutual Water Company

EPA ID: CA5602104 · 215 people served · 10 ZIP codes

EPA monitoring data for Del Norte Mutual Water Company shows an unblemished five-year compliance history — no violations of any kind have been recorded for this utility, which supplies water to approximately 215 people, covering every reporting cycle without a single MCL exceedance or monitoring lapse.

Data: EPA SDWIS Last verified: 2026-04-02

215
People Served
10
ZIP Codes Served
0
Violations (5yr)
Groundwater
Water Source
0
Contaminants Flagged

Compliance Trajectory

Stable · Risk tier: High · 92% chance of violation in next 12 months

Violations went from 20 (2022) to 8 (2025). Violation counts have remained relatively steady.

Service Area Map

Coverage area for Del Norte Mutual Water Company Source: EPA SDWIS service area boundaries.

Service area boundary

Service Area Demographics

$100,300
Median Household Income
186,369
Service Area Population
23%
Disadvantaged Population
30th
Poverty Percentile
10th
Energy Burden Percentile
70%
Pre-1986 Housing

The Del Norte Mutual Water Company serves a community with a median household income of $100,300 and an estimated 186,369 residents across its service area. Approximately 70% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

💧 Where Does Your Water Come From?

Groundwater

Del Norte Mutual Water Company's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.

Moderate Risk
Source Contamination Risk
60th
Wastewater Discharge Proximity
60th
Superfund Site Proximity

About 1% of homes in Ventura County, California rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.

Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points.

Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.

Infrastructure Risk

50 yr
Avg Pipe Age
Unknown
Pipe Material
16 yr
Est. Remaining Life
Moderate Wear
Decay Status
Installed 76% of expected lifespan used End of life

PFAS Detected in Service Area

PFAS ("forever chemicals") have been detected in water serving this system's area. 16 detections recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS). 1 exceeds state limits.

State limits: PFOA: 0.0051 ppt, PFOS: 0.0065 ppt
Health concern: PFAS are linked to cancer, thyroid disease, immune suppression, and developmental effects. They do not break down naturally.
Recommended filter: Reverse osmosis (RO) or activated carbon filters certified for PFAS removal. Find the right filter →

Comparable Water Systems

Similar-sized systems in California

0 violations
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Pond-derosa Oaks Wc
216 people
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Olivet University
212 people
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A 1 violation

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Flood Insurance Radon Mitigation Water Filtration PFAS Treatment
Flood Insurance $660
Radon Mitigation $480
Water Filtration $480
PFAS Treatment $410
Total Estimated Cost $2,030

Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.

Cost of Inaction

If water quality issues in this service area are not addressed, the estimated financial impact per household is:

PFAS Exposure — Lifetime Cost $1,000

Per person (emerging research est.)

Estimated Cumulative Cost Per Household

5 years
$165
10 years
$330
20 years
$660

Compare: Estimated remediation cost is $2,030 (one-time) vs. $330 in estimated inaction costs over 10 years.

Estimates based on published EPA, CDC, and peer-reviewed research. Individual costs vary by household size, property, and health factors. These are conservative lower-bound estimates intended for awareness, not financial advice.

System Overview

Del Norte Mutual Water Company (EPA ID: CA5602104) is a community water system in California that serves approximately 215 people from groundwater sources.

This system provides water to 10 ZIP codes across 3 communities.

Violation History

No violations recorded — This water system has no recorded EPA violations in the past 5 years.

Lead & Copper

No Lead and Copper Rule sampling data available for this water system.

Need help with your water quality?

Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400

Find the Right Water Filter

Free tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.

ZIP Codes Served

Coverage: 2 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 8 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Del Norte Mutual Water Company (CA5602104) on EPA.gov.

Frequently Asked Questions

Is Del Norte Mutual Water Company water safe to drink?

Based on EPA records, Del Norte Mutual Water Company has no recorded violations in the past 5 years — a positive indicator of water quality management.

How many people does Del Norte Mutual Water Company serve?

Del Norte Mutual Water Company serves approximately 215 people across 10 ZIP codes in California.

Where does Del Norte Mutual Water Company get its water?

The primary water source is groundwater.

Frequently Asked Questions

Should I use a water filter?
Del Norte Mutual Water Company meets EPA standards, but a water filter can reduce trace contaminants below detectable levels for added peace of mind.
How many people does Del Norte Mutual Water Company serve?
Del Norte Mutual Water Company serves approximately 215 people with drinking water across 10 ZIP codes.
What is Del Norte Mutual Water Company's water source?
Del Norte Mutual Water Company draws water from groundwater sources. Source type affects which contaminants are most likely to be present.
What is the demographic profile of Del Norte Mutual Water Company's service area?
The Del Norte Mutual Water Company service area has a median household income of $100,300. Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.
Where does Del Norte Mutual Water Company get its water?
Del Norte Mutual Water Company's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table. Based on available data, the source contamination risk is moderate.
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