Barton Flats Water System
EPA ID: CA3601048 · 1,070 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Barton Flats Water System (CA3601048): 2 unresolved EPA violations on record. Where compliant utilities carry no open actions, Barton Flats Water System shows 2 active EPA violations in the federal database for a service population of approximately 1,070.
Data: EPA SDWIS
Service Area Map
Coverage area for Barton Flats Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Barton Flats Water System serves a community with a median household income of $114,453 and an estimated 371 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 51% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. 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?
Barton Flats Water System'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.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How Barton Flats Water System compares to EPA limits
What This Means For You
Lead at 1 mg/L (action level) exceeds the EPA maximum of 0.015 mg/L (action level). Brain damage in children, kidney & blood pressure in adults. Consider reverse osmosis filtration.
Haloacetic Acids (HAA5) at 2 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
Total Trihalomethanes (TTHM) at 2 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
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.
System Overview
Barton Flats Water System (EPA ID: CA3601048) is a community water system in California that serves approximately 1,070 people from surface water sources.
This system serves ZIP code 92305 in Angelus Oaks.
Violation History
Status breakdown for accepted records with record years 2021-2026: 5 resolved, 0 archived, 0 addressed, and 2 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unaddressed (current) |
| October 17, 2024 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| January 1, 2022 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| January 1, 2022 | Total Trihalomethanes (TTHM) | Non-health-based | Resolved |
| January 1, 2022 | Lead | Non-health-based | Resolved |
| January 1, 2021 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
| January 1, 2021 | Total Trihalomethanes (TTHM) | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 2 | No |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
| Lead | Inorganic | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0028 mg/L | No | N/A |
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
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 92305 - Angelus Oaks
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Barton Flats Water System (CA3601048) on EPA.gov.
Frequently Asked Questions
Is Barton Flats Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current health-based noncompliance record for Barton Flats Water System. Review the utility's current notices and EPA record. This system-level compliance history cannot determine conditions at a specific tap.
How many people does Barton Flats Water System serve?
Barton Flats Water System serves approximately 1,070 people across 1 ZIP code in California.
Where does Barton Flats Water System get its water?
The primary water source is surface water.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Barton Flats Water System (CA): 1 Health Violation. https://zipcheckup.com/water-system/ca3601048/
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author = {{ZipCheckup}},
title = {{Barton Flats Water System (CA): 1 Health Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/ca3601048/}
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What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
Barton Flats Water System (EPA ID: CA3601048) - request the latest Consumer Confidence Report or ask about specific contaminants.