Trinity Company W.w. District #1
EPA ID: CA5310002 · 2,324 people served · 1 ZIP code
Federal water data for Trinity Company W.w. District #1 logs 1 historical violation — all addressed and cleared, leaving the utility in current compliance for 2,324 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Trinity Company W.w. District #1 Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Trinity Company W.w. District #1 serves a community with a median household income of $46,914 and an estimated 3,413 residents across its service area. Approximately 65% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 60% 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?
Trinity Company W.w. District #1'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.
About 3% of homes in Trinity 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 Trinity Company W.w. District #1 compares to EPA limits
What This Means For You
Stage 1 DBP Rule at 1 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
Trinity Company W.w. District #1 (EPA ID: CA5310002) is a community water system in California that serves approximately 2,324 people from surface water sources.
This system serves ZIP code 96041 in Hayfork.
Average Home Safety Score: C (66/100)
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 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 1 DBP Rule | Treatment Failure | 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 |
|---|---|---|---|
| 96041 | 0.0441 mg/L | Yes | 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
- 96041 — Hayfork
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Trinity Company W.w. District #1 (CA5310002) on EPA.gov.
Frequently Asked Questions
Is Trinity Company W.w. District #1 water safe to drink?
Trinity Company W.w. District #1 has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Trinity Company W.w. District #1 serve?
Trinity Company W.w. District #1 serves approximately 2,324 people across 1 ZIP code in California.
Where does Trinity Company W.w. District #1 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:
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
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
Trinity Company W.w. District #1 (EPA ID: CA5310002) — request the latest Consumer Confidence Report or ask about specific contaminants.