Community Water System · PWS PA2590051
Nelson Township Authority
Operator location Nelson, Pennsylvania - smaller served population (≤ 999) at 300 people served; 1,725 SDWIS violations on record from surface water sources.
- 300
- People served (this PWS)
- 1,725
- EPA violations (this PWS)
- 143
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Nelson Township Authority standing, high SDWIS violation third
300 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 8% is middle-third health share (≤ 23%).
The verdict
Nelson Township Authority sits in the upper third of the sitemap cohort by violation count (1,725), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (300; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 8% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 1,725
- Total EPA violations on record
- 8%
- Health-based (MCL / treatment failure)
- 300
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
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
- 123
- County
- Tioga
- School/Daycare
- No
- MCL Violations
- 61
- Monitoring Violations
- 1,227
- Treatment Tech Violations
- 82
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 343 | 2024 |
| Chlorine | MR | 127 | 2021 |
| Surface Water Treatment Rule | MR | 127 | 2023 |
| Interim Enhanced Surface Water Treatment Rule | MR | 102 | 2025 |
| CARBON, TOTAL | MR | 97 | 2015 |
| CARBON, TOTAL | TT | 82 | 2023 |
| Radium-226 | MR | 61 | 2011 |
| Radium-228 | MR | 61 | 2011 |
| Combined Uranium | MR | 55 | 2011 |
| TTHM | MCL | 54 | 2020 |
| Nitrate | MR | 25 | 2022 |
| Coliform (TCR) | MR | 21 | 2014 |
| TTHM | MR | 17 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 14 | 2022 |
| Nitrite | MR | 13 | 2022 |
| Endrin | MR | 12 | 2015 |
| Toxaphene | MR | 12 | 2015 |
| Hexachlorocyclopentadiene | MR | 12 | 2015 |
| Atrazine | MR | 12 | 2015 |
| LASSO | MR | 12 | 2015 |
| Heptachlor | MR | 12 | 2015 |
| 2,4,5-TP | MR | 12 | 2015 |
| HEXACHLOROBENZENE | MR | 12 | 2015 |
| Benzo(a)pyrene | MR | 12 | 2015 |
| Pentachlorophenol | MR | 12 | 2015 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 12 | 2015 |
| ETHYLENE DIBROMIDE | MR | 12 | 2015 |
| Chlordane | MR | 12 | 2015 |
| Methoxychlor | MR | 12 | 2015 |
| Dalapon | MR | 12 | 2015 |
Violation Count vs. the National Corpus
Nelson Township Authority has 1,725 recorded EPA violations, 100% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 0% carry more. 8% of this system's own violations are health-based (143 of 1,725), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
1,725 Higher than most more violations than 99%+ 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 Nelson Township Authority
EPA SDWIS lists 300 people served and 123 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
1,725 violations · 300 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.
What to do with Nelson Township Authority
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.