Callahan Water District
EPA ID: CA4700503 · 70 people served · 1 ZIP code
Five clean years on EPA record — Callahan Water District, 70 residents served.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Callahan Water District Source: EPA SDWIS service area boundaries.
Service area boundary — Grade A
🌊 Where Does Your Water Come From?
Callahan Water District'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 1% of homes in Siskiyou 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
Comparable Water Systems
Similar-sized systems in California
System Overview
Callahan Water District (EPA ID: CA4700503) is a community water system in California that serves approximately 70 people from surface water sources.
This system serves ZIP code 96014 in Callahan.
Average Home Safety Score: A (99/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 96014 | 0.00261085 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
- 96014 — Callahan
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Callahan Water District (CA4700503) on EPA.gov.
Frequently Asked Questions
Is Callahan Water District water safe to drink?
Based on EPA records, Callahan Water District has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Callahan Water District serve?
Callahan Water District serves approximately 70 people across 1 ZIP code in California.
Where does Callahan Water District 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.