Big Springs Mutual Water System
EPA ID: CA4500027 · 97 people served · 2 ZIP codes
In the current EPA monitoring period, Big Springs Mutual Water System has 2 violations still listed as unresolved, with the utility supplying water to approximately 97 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Big Springs Mutual Water System Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
💧 Where Does Your Water Come From?
Big Springs Mutual Water System'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.
About 2% of homes in Shasta 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
Detected Contaminants
How Big Springs Mutual Water System compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 2 mg/L exceeds the EPA maximum of mg/L.
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
BIG SPRINGS MUTUAL WATER SYSTEM (EPA ID: CA4500027) is a community water system in California that serves approximately 97 people from groundwater sources.
This system provides water to 2 ZIP codes across 2 communities.
Average Home Safety Score: B (84/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| October 17, 2024 | Stage 2 DBP Rule | Health-based | Unresolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 2 | Yes |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 96071 | 0.00086 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 3 (Low Risk)
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
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Big Springs Mutual Water System (CA4500027) on EPA.gov.
Frequently Asked Questions
Is Big Springs Mutual Water System water safe to drink?
Big Springs Mutual Water System has recorded 1 health-based violation in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does Big Springs Mutual Water System serve?
Big Springs Mutual Water System serves approximately 97 people across 2 ZIP codes in California.
Where does Big Springs Mutual Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
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
Big Springs Mutual Water System (EPA ID: CA4500027) — request the latest Consumer Confidence Report or ask about specific contaminants.