Pilot Knob Rural Water District 1 N & S
EPA ID: MO4020601 · 839 people served · 13 ZIP codes
Within the EPA compliance database, Pilot Knob Rural Water District 1 N & S shows 1 violation still pending resolution — a status that applies across the full service territory of approximately 839 people and reflects findings that have not yet cleared the federal enforcement process or received formal closure.
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 1 (2021) to 11 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Pilot Knob Rural Water District 1 N & S Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Pilot Knob Rural Water District 1 N & S serves a community with a median household income of $51,476 and an estimated 63,411 residents across its service area. Approximately 63% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 86% 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?
Pilot Knob Rural Water District 1 N & S'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 1% of homes in St. Francois 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 65th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How Pilot Knob Rural Water District 1 N & S compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Surface Water Treatment Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 3 detections 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
Pilot Knob Rural Water District 1 N & S (EPA ID: MO4020601) is a community water system in Missouri that serves approximately 839 people from groundwater sources.
This system provides water to 13 ZIP codes across 13 communities.
Average Home Safety Score: C (63/100)
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 | 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 | 1 | No |
| Surface Water Treatment Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High 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: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by MO or modeled from parcel and building-footprint data.
- 63601 — Park Hills
- 63620 — Annapolis
- 63621 — Arcadia
- 63623 — Belleview
- 63624 — Bismarck
- 63625 — Black
- 63637 — Doe Run
- 63640 — Farmington
- 63650 — Ironton
- 63656 — Middle Brook
- 63663 — Pilot Knob
- 65439 — Bixby
- 65565 — Steelville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Pilot Knob Rural Water District 1 N & S (MO4020601) on EPA.gov.
Frequently Asked Questions
Is Pilot Knob Rural Water District 1 N & S water safe to drink?
Pilot Knob Rural Water District 1 N & S has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Pilot Knob Rural Water District 1 N & S serve?
Pilot Knob Rural Water District 1 N & S serves approximately 839 people across 13 ZIP codes in Missouri.
Where does Pilot Knob Rural Water District 1 N & S get its water?
The primary water source is groundwater.
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.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
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
Pilot Knob Rural Water District 1 N & S (EPA ID: MO4020601) — request the latest Consumer Confidence Report or ask about specific contaminants.