Community Water System · PWS PA5030002
Dayton Muni Water Dept
Operator location Dayton, Pennsylvania - smaller served population (≤ 999) at 600 people served; 213 SDWIS violations on record from groundwater sources.
- 600
- People served (this PWS)
- 213
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Dayton Muni Water Dept standing, high SDWIS violation third
600 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 2% is middle-third health share (≤ 23%). Population rank #26,520 of 29,740 among systems serving 500+.
The verdict
Dayton Muni Water Dept sits in the upper third of the sitemap cohort by violation count (213), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (600; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 2% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #26,520 of 29,740
- Population · /systems
- #1,143 of 1,340
- Population · PA
- 213
- Total EPA violations on record
- 2%
- 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
- 286
- County
- Armstrong
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 190
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Groundwater Rule | MR | 29 | 2025 |
| Revised Total Coliform Rule | MON | 21 | 2025 |
| Chlorine | MR | 11 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2023 |
| TTHM | MR | 10 | 2023 |
| Consumer Confidence Rule | Other | 6 | 2019 |
| CYANIDE | MR | 6 | 2021 |
| Gross Alpha, Excl. Radon and U | MR | 5 | 2015 |
| Revised Total Coliform Rule | RPT | 4 | 2018 |
| Barium | MR | 4 | 2021 |
| Chromium | MR | 4 | 2021 |
| Selenium | MR | 4 | 2021 |
| Antimony, Total | MR | 4 | 2021 |
| Beryllium, Total | MR | 4 | 2021 |
| Public Notice | Other | 4 | 2019 |
| Arsenic | MR | 4 | 2021 |
| Fluoride | MR | 4 | 2021 |
| Thallium, Total | MR | 4 | 2021 |
| Mercury | MR | 4 | 2021 |
| Cadmium | MR | 4 | 2021 |
| Nickel | MR | 4 | 2021 |
| Groundwater Rule | TT | 3 | 2015 |
| cis-1,2-Dichloroethylene | MR | 2 | 2004 |
| DICHLOROMETHANE | MR | 2 | 2004 |
| 1,1-Dichloroethylene | MR | 2 | 2004 |
| 1,2-Dichloroethane | MR | 2 | 2004 |
| 1,1,1-Trichloroethane | MR | 2 | 2004 |
| Trichloroethylene | MR | 2 | 2004 |
| Toluene | MR | 2 | 2004 |
| Ethylbenzene | MR | 2 | 2004 |
Violation Count vs. the National Corpus
Dayton Muni Water Dept has 213 recorded EPA violations, 86% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 14% carry more. 2% of this system's own violations are health-based (5 of 213), and it ranks #26,520 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)
213 Higher than most more violations than 86% 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 Dayton Muni Water Dept
EPA SDWIS lists 600 people served and 286 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
213 violations · 600 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 Dayton Muni Water Dept
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.