Thompsontown Muni Authority
EPA ID: PA4340007 · 1,000 people served · 1 ZIP code
Not yet resolved: 1 EPA violation at Thompsontown Muni Authority, affecting about 1,000 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 1 (2021) to 1 (2023). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for Thompsontown Muni Authority Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The Thompsontown Muni Authority serves a community with a median household income of $63,900 and an estimated 2,598 residents across its service area. Approximately 71% 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?
Thompsontown Muni Authority'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 Juniata County, Pennsylvania 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 Thompsontown Muni Authority compares to EPA limits
What This Means For You
Selenium at 1 mg/L exceeds the EPA maximum of 0.05 mg/L. Hair & nail loss, nerve damage, liver & kidney damage. Consider reverse osmosis filtration.
Consumer Confidence Report Rule at 6 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 6 presence exceeds the EPA maximum of presence.
Surface Water Treatment Rule at 5 mg/L exceeds the EPA maximum of mg/L.
Contaminant 0700 at 5 mg/L exceeds the EPA maximum of mg/L.
Selenium was detected in this water system. reverse osmosis filtration can reduce exposure.
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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
Thompsontown Muni Authority (EPA ID: PA4340007) is a community water system in Pennsylvania that serves approximately 1,000 people from groundwater sources.
This system serves ZIP code 17094 in Thompsontown.
Average Home Safety Score: C (55/100)
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, 2025 | Stage 1 DBP Rule | Monitoring | Resolved |
| March 11, 2024 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2024 | Selenium | Monitoring | Resolved |
| September 25, 2023 | Lead and Copper Rule | Monitoring | Resolved |
| August 15, 2023 | Consumer Confidence Report Rule | Health-based | Resolved |
| August 15, 2023 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2023 | Contaminant 2326 | Monitoring | Resolved |
| January 1, 2023 | Revised Total Coliform Rule | Monitoring | Resolved |
| January 1, 2023 | Contaminant 0700 | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting Failure | 6 | Yes |
| Revised Total Coliform Rule | Microbiological | 6 | No |
| Surface Water Treatment Rule | Treatment Failure | 5 | No |
| Contaminant 0700 | Other Violation | 5 | No |
| Lead and Copper Rule | Treatment Failure | 4 | No |
| Selenium | Inorganic | 1 | No |
| Contaminant 2326 | Other Violation | 1 | No |
| Contaminant 2946 | Other Violation | 1 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
No Lead and Copper Rule sampling data available for this water 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
- 17094 — Thompsontown
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Thompsontown Muni Authority (PA4340007) on EPA.gov.
Frequently Asked Questions
Is Thompsontown Muni Authority water safe to drink?
Thompsontown Muni Authority has recorded 2 health-based violations 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 Thompsontown Muni Authority serve?
Thompsontown Muni Authority serves approximately 1,000 people across 1 ZIP code in Pennsylvania.
Where does Thompsontown Muni Authority 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:
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
Thompsontown Muni Authority (EPA ID: PA4340007) — request the latest Consumer Confidence Report or ask about specific contaminants.