CONEWAGO TWP ELEM SCH
PWS ID: PA7220377 · HUMMELSTOWN, Pennsylvania 17036
Population Served
250
Total Violations
166
Health-Based Violations
38
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Dauphin
- School/Daycare
- Yes
- MCL Violations
- 30
- Monitoring Violations
- 104
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 22 | 2014 |
| Nitrite | MR | 20 | 2015 |
| Nitrate | MR | 18 | 2015 |
| Public Notice | Other | 16 | 2014 |
| Groundwater Rule | MR | 12 | 2025 |
| Lead and Copper Rule | MR | 10 | 2017 |
| Nitrate | MCL | 8 | 2013 |
| Groundwater Rule | TT | 8 | 2023 |
| Chlorine | MR | 6 | 2016 |
| p-Dichlorobenzene | MR | 4 | 1991 |
| Vinyl chloride | MR | 4 | 1991 |
| 1,1-Dichloroethylene | MR | 4 | 1991 |
| Trichloroethylene | MR | 4 | 1991 |
| Benzene | MR | 4 | 1991 |
| Carbon tetrachloride | MR | 4 | 1991 |
| 1,2-Dichloroethane | MR | 4 | 1991 |
| Revised Total Coliform Rule | MON | 4 | 2020 |
| 1,1,1-Trichloroethane | MR | 4 | 1991 |
| Coliform (TCR) | MR | 2 | 1997 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.