Community Water System · PWS PA5030024
Mahoning Twp Muni Auth
Operator location Distant, Pennsylvania - smaller served population (≤ 999) at 900 people served; 177 SDWIS violations on record from surface water sources.
- 900
- People served (this PWS)
- 177
- EPA violations (this PWS)
- 33
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Mahoning Twp Muni Auth standing, high SDWIS violation third
900 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 19% is middle-third health share (≤ 23%). Population rank #21,171 of 29,740 among systems serving 500+.
The verdict
Mahoning Twp Muni Auth sits in the upper third of the sitemap cohort by violation count (177), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (900; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 19% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #21,171 of 29,740
- Population · /systems
- #866 of 1,340
- Population · PA
- 177
- Total EPA violations on record
- 19%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 350
- County
- Armstrong
- School/Daycare
- No
- MCL Violations
- 27
- Monitoring Violations
- 98
- Treatment Tech Violations
- 6
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 28 | 2023 |
| TTHM | MR | 27 | 2023 |
| TTHM | MCL | 27 | 2018 |
| Public Notice | Other | 24 | 2024 |
| Surface Water Treatment Rule | MR | 21 | 2016 |
| Consumer Confidence Rule | Other | 20 | 2023 |
| Chlorine | MR | 17 | 2016 |
| Surface Water Treatment Rule | TT | 6 | 2005 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 2 | 2008 |
| Revised Total Coliform Rule | MON | 2 | 2025 |
| Coliform (TCR) | MR | 1 | 2007 |
Violation Count vs. the National Corpus
Mahoning Twp Muni Auth has 177 recorded EPA violations, 84% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 16% carry more. 19% of this system's own violations are health-based (33 of 177), and it ranks #21,171 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
177 Higher than most more violations than 84% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Population served record for Mahoning Twp Muni Auth
EPA SDWIS lists 900 people served and 350 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Pennsylvania DEP, Bureau of Safe Drinking Water
Nationwide peers
177 violations · 900 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Mahoning Twp Muni Auth
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Pennsylvania compares on the same EPA violation measures. Pennsylvania systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.