Water System Report CA

Rincon Del Diablo Mwd (id-a)

EPA ID: CA3710044 · 3,275 people served · 7 ZIP codes

Water monitoring for Rincon Del Diablo Mwd (id-a): clean, five years, 3,275 residents.

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

3,275
People Served
7
ZIP Codes Served
0
Violations (5yr)
Surface Water
Water Source
0
Contaminants Flagged
$717K
Median Home Value in Service Area

Service Area Map

Coverage area for Rincon Del Diablo Mwd (id-a) Source: EPA SDWIS service area boundaries.

Service area boundary

Service Area Demographics

$91,704
Median Household Income
178,615
Service Area Population
25%
Disadvantaged Population
40th
Poverty Percentile
20th
Energy Burden Percentile
63%
Pre-1986 Housing

The Rincon Del Diablo Mwd (id-a) serves a community with a median household income of $91,704 and an estimated 178,615 residents across its service area. Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.

🌊 Where Does Your Water Come From?

Surface Water

Rincon Del Diablo Mwd (id-a)'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.

Moderate Risk
Source Contamination Risk
30th
Wastewater Discharge Proximity
20th
Superfund Site Proximity

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

Infrastructure Risk

47 yr
Avg Pipe Age
Copper
Pipe Material
21 yr
Est. Remaining Life
Stable
Decay Status
Installed 69% 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. 3 detections recorded.

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
City of Rio Dell
3,300 people
B 4 violations
Lake Don Pedro Csd
3,240 people
C 5 violations
0 violations
0 violations

Estimated Remediation Costs

Average estimated costs across ZIP codes served by this system

Flood Insurance Radon Mitigation PFAS Treatment
Flood Insurance $943
Radon Mitigation $400
PFAS Treatment $214
Total Estimated Cost $1,557

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 $1,557 (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

Rincon Del Diablo Mwd (id-a) (EPA ID: CA3710044) is a community water system in California that serves approximately 3,275 people from surface water sources.

This system provides water to 7 ZIP codes across 1 community.

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 5 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 Rincon Del Diablo Mwd (id-a) (CA3710044) on EPA.gov.

Frequently Asked Questions

Is Rincon Del Diablo Mwd (id-a) water safe to drink?

Based on EPA records, Rincon Del Diablo Mwd (id-a) has no recorded violations in the past 5 years — a positive indicator of water quality management.

How many people does Rincon Del Diablo Mwd (id-a) serve?

Rincon Del Diablo Mwd (id-a) serves approximately 3,275 people across 7 ZIP codes in California.

Where does Rincon Del Diablo Mwd (id-a) get its water?

The primary water source is surface water.

Lead Service Line Inventory

Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:

0
Confirmed Lead
0
Galvanized — Replacement Required
0
Unknown Material
1,089
Confirmed Non-Lead

This system reports zero confirmed lead service lines in its inventory. Unknown-material counts may still warrant verification.

Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.

Federal Regulatory Status · 2026Q1
LCRR inventory submission: Reported all required service line types
Latest tap sample on 2024-01-01 did not exceed the federal lead action level.
Population served: 3,275
Reported to California

Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026

ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.

Learn about lead in drinking water →

Frequently Asked Questions

Should I use a water filter?
Rincon Del Diablo Mwd (id-a) meets EPA standards, but a water filter can reduce trace contaminants below detectable levels for added peace of mind.
How many people does Rincon Del Diablo Mwd (id-a) serve?
Rincon Del Diablo Mwd (id-a) serves approximately 3,275 people with drinking water across 7 ZIP codes.
What is Rincon Del Diablo Mwd (id-a)'s water source?
Rincon Del Diablo Mwd (id-a) draws water from surface water sources. Source type affects which contaminants are most likely to be present.
What is the demographic profile of Rincon Del Diablo Mwd (id-a)'s service area?
The Rincon Del Diablo Mwd (id-a) service area has a median household income of $91,704. Demographic data is sourced from the U.S. Census Bureau and EPA EJScreen.
Where does Rincon Del Diablo Mwd (id-a) get its water?
Rincon Del Diablo Mwd (id-a)'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. Based on available data, the source contamination risk is moderate.
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