Golden State Water Company - Apple Vly South
EPA ID: CA3610107 · 6,208 people served · 2 ZIP codes
ZipCheckup's reading of EPA SDWIS for Golden State Water Company - Apple Vly South (CA3610107): 1 EPA violation in the last five years. Over the past five years, Golden State Water Company - Apple Vly South recorded 1 violation, all subsequently resolved through the EPA enforcement process - the supplier currently operates in good standing, with no active actions on file for its 6,208 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Golden State Water Company - Apple Vly South Source: EPA SDWIS service area boundaries.
Service area boundary - Grade B
Service Area Demographics
The Golden State Water Company - Apple Vly South serves a community with a median household income of $69,100 and an estimated 83,068 residents across its service area. Approximately 48% 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?
Golden State Water Company - Apple Vly South'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.
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
Detected Contaminants
How Golden State Water Company - Apple Vly South 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.
Lead was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in California
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
Golden State Water Company - Apple Vly South (EPA ID: CA3610107) is a community water system in California that serves approximately 6,208 people from groundwater sources.
This system provides water to 2 ZIP codes across 1 community.
Average Home Safety Score: B (83/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Lead | Inorganic | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 92308 | 0.0016 mg/L | No | N/A |
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: 1 ZIP code confirmed via EPA Community Water System Service Area Boundaries v3 plus 1 additional ZIP 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 Golden State Water Company - Apple Vly South (CA3610107) on EPA.gov.
Frequently Asked Questions
Is Golden State Water Company - Apple Vly South water safe to drink?
Golden State Water Company - Apple Vly South has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Golden State Water Company - Apple Vly South serve?
Golden State Water Company - Apple Vly South serves approximately 6,208 people across 2 ZIP codes in California.
Where does Golden State Water Company - Apple Vly South get its water?
The primary water source is groundwater.
Consumer Confidence Report (CCR)
Every community water system is required to provide an annual Consumer Confidence Report (CCR) to customers. The most recent report is from 2024.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
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.
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.
Frequently Asked Questions
How to cite this page
ZipCheckup. (2026). Golden State Water Company - Apple Vly South, CA. https://zipcheckup.com/water-system/ca3610107/
@misc{zipcheckup-water-system-ca3610107,
author = {{ZipCheckup}},
title = {{Golden State Water Company - Apple Vly South, CA}},
year = {2026},
url = {https://zipcheckup.com/water-system/ca3610107/}
}
Data as of April 2026.
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
Golden State Water Company - Apple Vly South (EPA ID: CA3610107) - request the latest Consumer Confidence Report or ask about specific contaminants.