ALIQUIPPA, PA · Beaver County
CENTER TWP WATER AUTH Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.
System facts
- System ID (PWSID)
- PA5040007
- System type
- Community Water System
- Population served
- 19,000
- Service connections
- 5,028
- Ownership
- local government
- Water source
- surface water (rivers, lakes, or reservoirs)
Violation history
Monitoring and Reporting (DBP)
—CARBON, TOTAL
August 1, 2025 – October 31, 2025
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
January 1, 2025 – March 31, 2025
ResolvedMonitoring, Regular
—Radium-228
January 1, 2025 – March 31, 2025
ResolvedMonitoring and Reporting (DBP)
—CARBON, TOTAL
December 1, 2024 – February 28, 2025
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
March 1, 2024 – March 31, 2024
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
November 1, 2023 – November 30, 2023
ResolvedMonitoring, Regular
—Radium-226
October 1, 2023 – December 31, 2023
ResolvedMonitoring, Regular
—Radium-228
October 1, 2023 – December 31, 2023
ResolvedMonitoring and Reporting (DBP)
—CARBON, TOTAL
October 1, 2023 – December 31, 2023
ResolvedMonitoring and Reporting (DBP)
—CARBON, TOTAL
January 1, 2023 – March 31, 2023
ResolvedMonitoring and Reporting (DBP)
—TTHM
July 1, 2021 – September 30, 2021
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
February 1, 2021 – February 28, 2021
ResolvedMonitoring, Routine (RTCR)
—Revised Total Coliform Rule
June 1, 2020 – June 30, 2020
ResolvedMonitoring and Reporting (DBP)
—TTHM
April 1, 2018 – June 30, 2018
ResolvedMonitoring, Regular
—Radium-228
April 1, 2017 – June 30, 2017
ResolvedMonitoring, Regular
—Radium-226
April 1, 2017 – June 30, 2017
ResolvedMonitoring, Regular
—Combined Uranium
April 1, 2017 – June 30, 2017
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
April 1, 2017 – June 30, 2017
ResolvedPublic Notification Violation for NPDWR Violation
—Public Notice
February 13, 2017 – April 18, 2017
ResolvedTreatment Technique (SWTR and GWR)
Health-basedSurface Water Treatment Rule
February 1, 2017 – February 28, 2017
ResolvedMonitoring, Regular
—Diquat
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Glyphosate
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—OXAMYL
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Simazine
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Picloram
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—2,4,5-TP
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Dinoseb
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—2,4-D
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Heptachlor epoxide
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Heptachlor
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—LASSO
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Atrazine
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Carbofuran
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Chlordane
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Pentachlorophenol
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Benzo(a)pyrene
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Endrin
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—BHC-GAMMA
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Methoxychlor
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Toxaphene
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—Dalapon
January 1, 2017 – March 31, 2017
ResolvedMonitoring, Regular
—1,2-Dichloropropane
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Trichloroethylene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Tetrachloroethylene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—CHLOROBENZENE
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Benzene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Toluene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Ethylbenzene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Styrene
October 1, 2016 – December 31, 2016
ResolvedMonitoring and Reporting (DBP)
—CARBON, TOTAL
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—DICHLOROMETHANE
October 1, 2016 – December 31, 2016
ResolvedFollow-up Or Routine LCR Tap M/R
—Lead and Copper Rule
October 1, 2016 – November 30, 2016
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
October 1, 2016 – December 31, 2016
ResolvedMonitoring and Reporting (DBP)
—TTHM
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Nitrate
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Nitrite
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Combined Uranium
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Radium-226
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Radium-228
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—BHC-GAMMA
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Methoxychlor
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Toxaphene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Dalapon
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Diquat
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Endothall
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Glyphosate
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—OXAMYL
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Simazine
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Dinoseb
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Hexachlorocyclopentadiene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Carbofuran
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Atrazine
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—LASSO
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—2,3,7,8-TCDD
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Heptachlor
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Heptachlor epoxide
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—2,4-D
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—2,4,5-TP
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—HEXACHLOROBENZENE
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Benzo(a)pyrene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Pentachlorophenol
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,2-DIBROMO-3-CHLOROPROPANE
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—ETHYLENE DIBROMIDE
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Chlordane
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Xylenes, Total
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—o-Dichlorobenzene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—p-Dichlorobenzene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,2-Dichloroethane
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Regular
—Carbon tetrachloride
October 1, 2016 – December 31, 2016
ResolvedMonitoring, Turbidity (Enhanced SWTR)
—Interim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
ResolvedTreatment Technique (SWTR and GWR)
Health-basedLong Term 2 Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
ResolvedMonthly Turbidity Exceed (Enhanced SWTR)
Health-basedInterim Enhanced Surface Water Treatment Rule
September 1, 2016 – September 30, 2016
ResolvedMonitoring, Routine Major (TCR)
—Coliform (TCR)
May 1, 2015 – May 31, 2015
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2015 – June 30, 2015
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
April 1, 2014 – June 30, 2014
ResolvedTreatment Technique (SWTR and GWR)
Health-basedGroundwater Rule
January 1, 2014 – January 31, 2014
ResolvedMonitoring and Reporting (DBP)
—Chlorine
April 1, 2011 – June 15, 2011
ResolvedMonitoring, Regular
—Nitrate
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Nitrite
January 1, 2011 – December 31, 2011
ResolvedMonitoring, Regular
—Radium-228
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—Radium-226
April 1, 2005 – June 30, 2005
ResolvedMonitoring and Reporting (DBP)
—Total Haloacetic Acids (HAA5)
January 1, 2004 – March 31, 2004
ResolvedMonitoring, Routine Minor (TCR)
—Coliform (TCR)
November 1, 2003 – November 30, 2003
ResolvedMonitoring, Regular
—p-Dichlorobenzene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—DICHLOROMETHANE
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Styrene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Ethylbenzene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Toluene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Benzene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—CHLOROBENZENE
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,2-Dichloropropane
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—Carbon tetrachloride
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,2-Dichloroethane
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—trans-1,2-Dichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—1,1-Dichloroethylene
January 1, 2003 – December 31, 2003
ResolvedMonitoring, Regular
—BHC-GAMMA
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—Endrin
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—Methoxychlor
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—Toxaphene
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—2,4,5-TP
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—2,4-D
June 24, 1982 – June 23, 1985
ArchivedMonitoring, Regular
—Gross Alpha, Excl. Radon and U
August 1, 1976 – July 31, 1980
Archived
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 2025 – October 31, 2025 | Monitoring and Reporting (DBP) | CARBON, TOTAL | — | Resolved |
| January 1, 2025 – March 31, 2025 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| January 1, 2025 – March 31, 2025 | Monitoring, Regular | Radium-228 | — | Resolved |
| December 1, 2024 – February 28, 2025 | Monitoring and Reporting (DBP) | CARBON, TOTAL | — | Resolved |
| March 1, 2024 – March 31, 2024 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| November 1, 2023 – November 30, 2023 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| October 1, 2023 – December 31, 2023 | Monitoring, Regular | Radium-226 | — | Resolved |
| October 1, 2023 – December 31, 2023 | Monitoring, Regular | Radium-228 | — | Resolved |
| October 1, 2023 – December 31, 2023 | Monitoring and Reporting (DBP) | CARBON, TOTAL | — | Resolved |
| January 1, 2023 – March 31, 2023 | Monitoring and Reporting (DBP) | CARBON, TOTAL | — | Resolved |
| July 1, 2021 – September 30, 2021 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| February 1, 2021 – February 28, 2021 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| June 1, 2020 – June 30, 2020 | Monitoring, Routine (RTCR) | Revised Total Coliform Rule | — | Resolved |
| April 1, 2018 – June 30, 2018 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| April 1, 2017 – June 30, 2017 | Monitoring, Regular | Radium-228 | — | Resolved |
| April 1, 2017 – June 30, 2017 | Monitoring, Regular | Radium-226 | — | Resolved |
| April 1, 2017 – June 30, 2017 | Monitoring, Regular | Combined Uranium | — | Resolved |
| April 1, 2017 – June 30, 2017 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| February 13, 2017 – April 18, 2017 | Public Notification Violation for NPDWR Violation | Public Notice | — | Resolved |
| February 1, 2017 – February 28, 2017 | Treatment Technique (SWTR and GWR) | Surface Water Treatment Rule | Health-based | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Diquat | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Glyphosate | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | OXAMYL | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Simazine | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Picloram | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Dinoseb | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | 2,4-D | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Heptachlor | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | LASSO | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Atrazine | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Carbofuran | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Chlordane | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Endrin | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Methoxychlor | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Toxaphene | — | Resolved |
| January 1, 2017 – March 31, 2017 | Monitoring, Regular | Dalapon | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Benzene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Toluene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Styrene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring and Reporting (DBP) | CARBON, TOTAL | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| October 1, 2016 – November 30, 2016 | Follow-up Or Routine LCR Tap M/R | Lead and Copper Rule | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring and Reporting (DBP) | TTHM | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Nitrate | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Nitrite | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Combined Uranium | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Radium-226 | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Radium-228 | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Methoxychlor | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Toxaphene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Dalapon | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Diquat | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Endothall | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Glyphosate | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | OXAMYL | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Simazine | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Dinoseb | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Hexachlorocyclopentadiene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Carbofuran | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Atrazine | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | LASSO | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 2,3,7,8-TCDD | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Heptachlor | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Heptachlor epoxide | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 2,4-D | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 2,4,5-TP | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | HEXACHLOROBENZENE | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,2-DIBROMO-3-CHLOROPROPANE | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | ETHYLENE DIBROMIDE | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Chlordane | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| October 1, 2016 – December 31, 2016 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| September 1, 2016 – September 30, 2016 | Monitoring, Turbidity (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | — | Resolved |
| September 1, 2016 – September 30, 2016 | Treatment Technique (SWTR and GWR) | Long Term 2 Enhanced Surface Water Treatment Rule | Health-based | Resolved |
| September 1, 2016 – September 30, 2016 | Monthly Turbidity Exceed (Enhanced SWTR) | Interim Enhanced Surface Water Treatment Rule | Health-based | Resolved |
| May 1, 2015 – May 31, 2015 | Monitoring, Routine Major (TCR) | Coliform (TCR) | — | Resolved |
| April 1, 2015 – June 30, 2015 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| April 1, 2014 – June 30, 2014 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| January 1, 2014 – January 31, 2014 | Treatment Technique (SWTR and GWR) | Groundwater Rule | Health-based | Resolved |
| April 1, 2011 – June 15, 2011 | Monitoring and Reporting (DBP) | Chlorine | — | Resolved |
| January 1, 2011 – December 31, 2011 | Monitoring, Regular | Nitrate | — | Resolved |
| January 1, 2011 – December 31, 2011 | Monitoring, Regular | Nitrite | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | Radium-228 | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | Radium-226 | — | Resolved |
| January 1, 2004 – March 31, 2004 | Monitoring and Reporting (DBP) | Total Haloacetic Acids (HAA5) | — | Resolved |
| November 1, 2003 – November 30, 2003 | Monitoring, Routine Minor (TCR) | Coliform (TCR) | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Styrene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Benzene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | trans-1,2-Dichloroethylene | — | Resolved |
| January 1, 2003 – December 31, 2003 | Monitoring, Regular | 1,1-Dichloroethylene | — | Resolved |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | BHC-GAMMA | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | Endrin | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | Methoxychlor | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | Toxaphene | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | 2,4,5-TP | — | Archived |
| June 24, 1982 – June 23, 1985 | Monitoring, Regular | 2,4-D | — | Archived |
| August 1, 1976 – July 31, 1980 | Monitoring, Regular | Gross Alpha, Excl. Radon and U | — | Archived |
Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
- December 1, 2025State Compliance achieved1 linked violation
- November 13, 2025State Public Notification requested1 linked violation
- November 13, 2025State Formal Notice of Violation issued1 linked violation
- August 1, 2025State Compliance achieved3 linked violations
- May 16, 2025State Violation/Reminder Notice1 linked violation
- May 14, 2025State Public Notification requested2 linked violations
- May 14, 2025State Formal Notice of Violation issued2 linked violations
- February 18, 2025State Formal Notice of Violation issued1 linked violation
- February 18, 2025State Public Notification requested1 linked violation
- June 27, 2024State Public Notification requested1 linked violation
- June 27, 2024State Compliance achieved2 linked violations
- May 14, 2024State Formal Notice of Violation issued1 linked violation
- May 14, 2024State Public Notification requested1 linked violation
- February 15, 2024State Compliance achieved1 linked violation
- February 14, 2024State Compliance achieved2 linked violations
- February 13, 2024State Formal Notice of Violation issued2 linked violations
- February 2, 2024State Violation/Reminder Notice1 linked violation
- January 4, 2024State Violation/Reminder Notice1 linked violation
- May 18, 2023State Compliance achieved1 linked violation
- May 15, 2023State Violation/Reminder Notice1 linked violation
- May 15, 2023State Formal Notice of Violation issued1 linked violation
- November 5, 2021State Violation/Reminder Notice1 linked violation
- October 26, 2021State Compliance achieved2 linked violations
- September 17, 2021State Violation/Reminder Notice1 linked violation
- April 8, 2021State Compliance achieved1 linked violation
- March 31, 2021State Compliance achieved1 linked violation
- January 27, 2021State Violation/Reminder Notice1 linked violation
- September 17, 2020State Violation/Reminder Notice1 linked violation
- August 23, 2019State Public Notification received2 linked violations
- October 24, 2018State Compliance achieved1 linked violation
- September 10, 2018State Compliance achieved2 linked violations
- September 10, 2018State Compliance achieved2 linked violations
- August 15, 2018State Violation/Reminder Notice2 linked violations
- August 15, 2018State Violation/Reminder Notice2 linked violations
- August 10, 2018State Public Notification requested2 linked violations
- August 10, 2018State Formal Notice of Violation issued2 linked violations
- August 10, 2018State Formal Notice of Violation issued2 linked violations
- August 10, 2018State Public Notification requested2 linked violations
- August 22, 2017State Compliance achieved4 linked violations
- August 4, 2017State Violation/Reminder Notice4 linked violations
- July 24, 2017State Formal Notice of Violation issued4 linked violations
- June 21, 2017State Public Notification received58 linked violations
- June 21, 2017State Compliance achieved58 linked violations
- May 1, 2017State Compliance achieved28 linked violations
- April 28, 2017State Violation/Reminder Notice28 linked violations
- April 18, 2017State Public Notification received2 linked violations
- April 18, 2017State Administrative/Compliance Order without penalty issued2 linked violations
- April 18, 2017State Public Notification requested2 linked violations
- April 18, 2017State Compliance achieved2 linked violations
- January 27, 2017State Compliance achieved1 linked violation
- January 27, 2017State Formal Notice of Violation issued58 linked violations
- January 27, 2017State Public Notification requested58 linked violations
- January 23, 2017State Violation/Reminder Notice59 linked violations
- November 30, 2016State Compliance achieved1 linked violation
- November 1, 2016State Compliance achieved3 linked violations
- November 1, 2016State Site Visit for enforcement purposes3 linked violations
- October 25, 2016State Formal Notice of Violation issued3 linked violations
- October 25, 2016State Public Notification requested3 linked violations
- July 13, 2015State Compliance achieved2 linked violations
- April 27, 2015State Compliance achieved2 linked violations
- April 27, 2015State Public Notification received2 linked violations
- August 18, 2014State Site Visit for enforcement purposes2 linked violations
- August 18, 2014State Public Notification requested2 linked violations
- August 18, 2014State Public Notification requested2 linked violations
- August 18, 2014State Site Visit for enforcement purposes2 linked violations
- March 17, 2014State Compliance achieved1 linked violation
- March 17, 2014State Site Visit for enforcement purposes1 linked violation
- February 14, 2012State Compliance achieved2 linked violations
- June 15, 2011State Compliance achieved1 linked violation
- June 7, 2011State Violation/Reminder Notice1 linked violation
- November 8, 2005State Consent Decree/Judgement1 linked violation
- November 8, 2005State Compliance achieved1 linked violation
- November 8, 2005State Violation/Reminder Notice1 linked violation
- August 30, 2005State Consent Decree/Judgement1 linked violation
- August 30, 2005State Compliance achieved1 linked violation
- August 30, 2005State Violation/Reminder Notice1 linked violation
- April 1, 2005State Compliance achieved2 linked violations
- April 1, 2005State Violation/Reminder Notice2 linked violations
- March 3, 2004State Compliance Meeting conducted20 linked violations
- March 3, 2004State Compliance achieved20 linked violations
- September 12, 1985State Public Notification requested6 linked violations
Contact
CENTER TWP WATER AUTH
724-774-7766
ALIQUIPPA, PA 15001