Jefferson County Water Authority
EPA ID: MO6071352 · 25 people served · 1 ZIP code
Zero violations in five consecutive years of EPA monitoring — Jefferson County Water Authority has held a clean track record across every reporting cycle in that span, with no enforcement activity of any kind on file for the full service population of 25 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 3 (2022) to 1 (2025). The pattern suggests growing compliance challenges.
Service Area Demographics
The Jefferson County Water Authority serves a community with a median household income of $76,468 and an estimated 27,913 residents across its service area. Approximately 50% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
🌊 Where Does Your Water Come From?
Jefferson County Water Authority'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 Jefferson County, Missouri rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Wastewater Proximity Note: This service area ranks in the 60th percentile nationally for proximity to wastewater discharge points. Surface water sources near wastewater outfalls may face additional treatment challenges.
Superfund Proximity Note: This service area ranks in the 60th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Comparable Water Systems
Similar-sized systems in Missouri
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
Jefferson County Water Authority (EPA ID: MO6071352) is a community water system in Missouri that serves approximately 25 people from surface water sources.
This system serves ZIP code 63028 in Festus.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
- 63028 — Festus
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Jefferson County Water Authority (MO6071352) on EPA.gov.
Frequently Asked Questions
Is Jefferson County Water Authority water safe to drink?
Based on EPA records, Jefferson County Water Authority has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Jefferson County Water Authority serve?
Jefferson County Water Authority serves approximately 25 people across 1 ZIP code in Missouri.
Where does Jefferson County Water Authority get its water?
The primary water source is surface water.