Water Quality in DUNCANNON, PA (17020)
EPA violation data for public water systems serving ZIP code 17020.
317
Total Violations
4
Health-Based
313
Monitoring / Reporting
315
Resolved
What does this mean?
315 of 317 violations have been resolved. 4 are health-based violations, meaning contaminant levels exceeded federal safety limits. The remaining 313 are monitoring or reporting violations (missed testing deadlines or late paperwork — not necessarily a water quality issue). Not all violations mean your water is unsafe. The EPA requires reporting even for minor administrative issues.
Violations Detail (317 total)
| Contaminant | Category | MCL Limit | Measured | Date | Status | Health Effects |
|---|---|---|---|---|---|---|
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Active | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jul 31, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jul 31, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jul 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jul 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jul 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jul 10, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Apr 30, 2025 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Mar 22, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Mar 22, 2025 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Groundwater Rule | Monitoring | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Feb 28, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 10, 2025 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Jan 10, 2025 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2024 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2024 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Jun 3, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Jun 3, 2024 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | May 31, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Feb 29, 2024 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Feb 29, 2024 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) phthalate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) phthalate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| ETHYLENE DIBROMIDE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Glyphosate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| OXAMYL | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| OXAMYL | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,3,7,8-TCDD | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,3,7,8-TCDD | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) adipate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Atrazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Cardiovascular system or reproductive problems |
| Atrazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Cardiovascular system or reproductive problems |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endothall | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endothall | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Simazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Simazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Carbofuran | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Carbofuran | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Benzo(a)pyrene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Benzo(a)pyrene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 1,2-DIBROMO-3-CHLOROPROPANE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 1,2-DIBROMO-3-CHLOROPROPANE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| ETHYLENE DIBROMIDE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Glyphosate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) adipate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Glyphosate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Glyphosate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Atrazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Cardiovascular system or reproductive problems |
| Atrazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | Cardiovascular system or reproductive problems |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endothall | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endothall | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) adipate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) adipate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| OXAMYL | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Simazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Simazine | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) phthalate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Di(2-ethylhexyl) phthalate | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Carbofuran | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Carbofuran | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 1,2-DIBROMO-3-CHLOROPROPANE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 1,2-DIBROMO-3-CHLOROPROPANE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| ETHYLENE DIBROMIDE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| ETHYLENE DIBROMIDE | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Benzo(a)pyrene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Benzo(a)pyrene | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,3,7,8-TCDD | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| 2,3,7,8-TCDD | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| OXAMYL | Monitoring | N/A | N/A | Dec 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Sep 11, 2023 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Aug 11, 2023 | Resolved | N/A |
| Public Notice | Monitoring | N/A | N/A | Aug 11, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jun 30, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Health-Based | N/A | N/A | Jun 30, 2023 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Jan 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jan 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jan 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jan 31, 2023 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jan 31, 2023 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Pentachlorophenol | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Dalapon | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| 2,4,5-TP | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| 2,4-D | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Total Polychlorinated Biphenyls (PCB) | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Dinoseb | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Toxaphene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Hexachlorocyclopentadiene | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| BHC-GAMMA | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Methoxychlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Chlordane | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Picloram | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Endrin | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Diquat | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor epoxide | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| HEXACHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Heptachlor | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| LASSO | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | N/A |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2022 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| Lead and Copper Rule | Monitoring | N/A | N/A | Sep 30, 2022 | Resolved | N/A |
| E. COLI | Monitoring | 0 | N/A | Aug 16, 2022 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Aug 16, 2022 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Aug 16, 2022 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| E. COLI | Monitoring | 0 | N/A | Aug 16, 2022 | Resolved | Severe gastrointestinal illness; may be fatal in vulnerable populations |
| Groundwater Rule | Health-Based | N/A | N/A | Jul 31, 2022 | Resolved | N/A |
| Groundwater Rule | Health-Based | N/A | N/A | Jul 31, 2022 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| Arsenic | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | Skin damage; circulatory system problems; increased risk of cancer |
| Arsenic | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | Skin damage; circulatory system problems; increased risk of cancer |
| Arsenic | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | Skin damage; circulatory system problems; increased risk of cancer |
| Arsenic | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | Skin damage; circulatory system problems; increased risk of cancer |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| Total Haloacetic Acids (HAA5) | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| TTHM | Monitoring | N/A | N/A | Jun 30, 2022 | Resolved | N/A |
| 1,2-Dichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Styrene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,2-Dichloropropane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,2-Dichloropropane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,2,4-Trichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,2,4-Trichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| cis-1,2-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| cis-1,2-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Trichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| Trichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| 1,2-Dichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Tetrachloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| Benzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Anemia; decrease in blood platelets; increased risk of cancer |
| Benzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Anemia; decrease in blood platelets; increased risk of cancer |
| DICHLOROMETHANE | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| DICHLOROMETHANE | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| o-Dichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| o-Dichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| trans-1,2-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| trans-1,2-Dichloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1,1-Trichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1,1-Trichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1,2-Trichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| 1,1,2-Trichloroethane | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| CHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| CHLOROBENZENE | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Toluene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Toluene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Styrene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Xylenes, Total | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Ethylbenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Ethylbenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Carbon tetrachloride | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| Carbon tetrachloride | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| p-Dichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| p-Dichlorobenzene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Xylenes, Total | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | N/A |
| Tetrachloroethylene | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Liver problems; increased risk of cancer |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrate | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Nitrite | Monitoring | N/A | N/A | Dec 31, 2021 | Resolved | Infants below the age of six months could become seriously ill (blue baby syndrome); shortness of breath |
| Groundwater Rule | Monitoring | N/A | N/A | Aug 31, 2021 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Aug 31, 2021 | Resolved | N/A |
| Groundwater Rule | Monitoring | N/A | N/A | Aug 31, 2021 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jul 31, 2021 | Resolved | N/A |
| Revised Total Coliform Rule | Monitoring | N/A | N/A | Jul 31, 2021 | Resolved | N/A |
Lead & Copper Levels
Violation Timeline
2025(20)
Lead and Copper Rule
52
Lead and Copper Rule
52
Lead and Copper Rule
52
Lead and Copper Rule
52
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
Groundwater Rule
31
Groundwater Rule
31
E. COLI
34
E. COLI
34
Groundwater Rule
31
Groundwater Rule
31
Public Notice
75
Public Notice
75
Public Notice
75
Public Notice
75
2024(18)
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
TTHM
27
TTHM
27
TTHM
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
E. COLI
34
E. COLI
34
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
2023(130)
2,4-D
03
Total Polychlorinated Biphenyls (PCB)
03
Dalapon
03
Dalapon
03
Di(2-ethylhexyl) phthalate
03
Di(2-ethylhexyl) phthalate
03
ETHYLENE DIBROMIDE
03
Glyphosate
03
OXAMYL
03
OXAMYL
03
Diquat
03
Diquat
03
2,3,7,8-TCDD
03
2,3,7,8-TCDD
03
BHC-GAMMA
03
BHC-GAMMA
03
Heptachlor epoxide
03
Di(2-ethylhexyl) adipate
03
Atrazine
03
Atrazine
03
Endrin
03
Endrin
03
Methoxychlor
03
Methoxychlor
03
Toxaphene
03
Toxaphene
03
Endothall
03
Endothall
03
Simazine
03
Simazine
03
Picloram
03
Picloram
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
Carbofuran
03
Carbofuran
03
LASSO
03
LASSO
03
2,4,5-TP
03
2,4,5-TP
03
Benzo(a)pyrene
03
Benzo(a)pyrene
03
Pentachlorophenol
03
Pentachlorophenol
03
1,2-DIBROMO-3-CHLOROPROPANE
03
1,2-DIBROMO-3-CHLOROPROPANE
03
Chlordane
03
Chlordane
03
ETHYLENE DIBROMIDE
03
Glyphosate
03
Heptachlor epoxide
03
2,4-D
03
Dinoseb
03
Dinoseb
03
Heptachlor
03
Heptachlor
03
HEXACHLOROBENZENE
03
HEXACHLOROBENZENE
03
Total Polychlorinated Biphenyls (PCB)
03
Di(2-ethylhexyl) adipate
03
Toxaphene
03
Pentachlorophenol
03
Glyphosate
03
Glyphosate
03
Diquat
03
Diquat
03
Atrazine
03
Atrazine
03
BHC-GAMMA
03
BHC-GAMMA
03
Dalapon
03
Dalapon
03
Endothall
03
Endothall
03
Di(2-ethylhexyl) adipate
03
Di(2-ethylhexyl) adipate
03
Chlordane
03
OXAMYL
03
Simazine
03
Simazine
03
Di(2-ethylhexyl) phthalate
03
Di(2-ethylhexyl) phthalate
03
Picloram
03
Picloram
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
Carbofuran
03
Carbofuran
03
LASSO
03
LASSO
03
Heptachlor
03
Heptachlor
03
Heptachlor epoxide
03
Heptachlor epoxide
03
2,4-D
03
2,4-D
03
2,4,5-TP
03
2,4,5-TP
03
HEXACHLOROBENZENE
03
HEXACHLOROBENZENE
03
Total Polychlorinated Biphenyls (PCB)
03
Total Polychlorinated Biphenyls (PCB)
03
1,2-DIBROMO-3-CHLOROPROPANE
03
1,2-DIBROMO-3-CHLOROPROPANE
03
ETHYLENE DIBROMIDE
03
ETHYLENE DIBROMIDE
03
Pentachlorophenol
03
Toxaphene
03
Endrin
03
Endrin
03
Methoxychlor
03
Methoxychlor
03
Chlordane
03
Dinoseb
03
Dinoseb
03
Benzo(a)pyrene
03
Benzo(a)pyrene
03
2,3,7,8-TCDD
03
2,3,7,8-TCDD
03
OXAMYL
03
Revised Total Coliform Rule
4B
Public Notice
75
Public Notice
75
Revised Total Coliform Rule
1A
Revised Total Coliform Rule
1A
Groundwater Rule
31
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
2022(94)
Diquat
03
HEXACHLOROBENZENE
03
Pentachlorophenol
03
Pentachlorophenol
03
Dalapon
03
Dalapon
03
Toxaphene
03
Toxaphene
03
Methoxychlor
03
Methoxychlor
03
Heptachlor
03
Heptachlor
03
Diquat
03
Diquat
03
Endrin
03
Endrin
03
Heptachlor epoxide
03
Toxaphene
03
Chlordane
03
Heptachlor epoxide
03
Total Polychlorinated Biphenyls (PCB)
03
Total Polychlorinated Biphenyls (PCB)
03
2,4,5-TP
03
2,4,5-TP
03
BHC-GAMMA
03
BHC-GAMMA
03
2,4-D
03
2,4-D
03
Chlordane
03
Chlordane
03
Total Polychlorinated Biphenyls (PCB)
03
Total Polychlorinated Biphenyls (PCB)
03
HEXACHLOROBENZENE
03
Dinoseb
03
Dinoseb
03
Toxaphene
03
Heptachlor epoxide
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
HEXACHLOROBENZENE
03
Picloram
03
LASSO
03
LASSO
03
Hexachlorocyclopentadiene
03
Hexachlorocyclopentadiene
03
BHC-GAMMA
03
BHC-GAMMA
03
Methoxychlor
03
Methoxychlor
03
Chlordane
03
Picloram
03
Endrin
03
Endrin
03
Diquat
03
Heptachlor epoxide
03
HEXACHLOROBENZENE
03
LASSO
03
Heptachlor
03
Heptachlor
03
LASSO
03
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
Nitrate
03
Nitrate
03
Nitrate
03
Nitrate
03
Nitrite
03
Nitrite
03
Nitrite
03
Nitrite
03
Lead and Copper Rule
52
Lead and Copper Rule
52
Lead and Copper Rule
52
Lead and Copper Rule
52
E. COLI
34
E. COLI
34
E. COLI
34
E. COLI
34
Groundwater Rule
41
Groundwater Rule
41
TTHM
27
TTHM
27
TTHM
27
Arsenic
03
Arsenic
03
Arsenic
03
Arsenic
03
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
Total Haloacetic Acids (HAA5)
27
TTHM
27
2021(55)
1,2-Dichloroethane
03
Styrene
03
1,2-Dichloropropane
03
1,2-Dichloropropane
03
1,2,4-Trichlorobenzene
03
1,2,4-Trichlorobenzene
03
cis-1,2-Dichloroethylene
03
cis-1,2-Dichloroethylene
03
Trichloroethylene
03
Trichloroethylene
03
1,2-Dichloroethane
03
Tetrachloroethylene
03
Benzene
03
Benzene
03
DICHLOROMETHANE
03
DICHLOROMETHANE
03
o-Dichlorobenzene
03
o-Dichlorobenzene
03
1,1-Dichloroethylene
03
1,1-Dichloroethylene
03
trans-1,2-Dichloroethylene
03
trans-1,2-Dichloroethylene
03
1,1,1-Trichloroethane
03
1,1,1-Trichloroethane
03
1,1,2-Trichloroethane
03
1,1,2-Trichloroethane
03
CHLOROBENZENE
03
CHLOROBENZENE
03
Toluene
03
Toluene
03
Styrene
03
Xylenes, Total
03
Ethylbenzene
03
Ethylbenzene
03
Carbon tetrachloride
03
Carbon tetrachloride
03
p-Dichlorobenzene
03
p-Dichlorobenzene
03
Xylenes, Total
03
Tetrachloroethylene
03
Nitrite
03
Nitrite
03
Nitrite
03
Nitrate
03
Nitrate
03
Nitrate
03
Nitrate
03
Nitrate
03
Nitrite
03
Nitrite
03
Groundwater Rule
31
Groundwater Rule
31
Groundwater Rule
31
Revised Total Coliform Rule
3A
Revised Total Coliform Rule
3A
How Does This Compare?
DUNCANNON (17020) has 317 recorded violations, including 4 health-based. 2 remain unresolved. Consider testing your tap water independently for added peace of mind.
Recommended Water Filters
Based on the contaminants detected in your area, these filter types may help improve your water quality.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
UV Water Purifier
Uses ultraviolet light to neutralize bacteria, viruses, and parasites without chemicals. Ideal for homes with microbial contamination concerns.
Targets:E. coli, Coliform, Giardia, Cryptosporidium
Look for:NSF/ANSI 55 (Class A) certified
Always look for filters certified by NSF International for the specific contaminants you want to remove.