Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PA5630045
PWS Name	TRI CNTY JT MUNI AUTH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water
Primacy Type	State
Is Wholesaler?	No
Population Served	10100
County Served	Washington

The tables below list all violations that the state reported to EPA for this water system. Health-based violations are listed first, followed by treatment technique, MRDL, monitoring, reporting, and other violations.

Health-based	Violations of maximum contaminant levels (MCLs) or maximum residual disinfectant levels (MRDLs), which specify the highest concentrations of contaminants or disinfectants, respectively, allowed in drinking water; or of treatment technique (TT) rules, which specify required processes intended to reduce the amounts of contaminants in drinking water. MCLs, MRDLs, and treatment technique rules are all health-based drinking water standards.
Maximum Contaminant Level or MCL	The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.
Treatment Technique	A required process intended to reduce the level of a contaminant in drinking water.
Maximum residual disinfectant level or MRDL	The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Monitoring & reporting	Failure to conduct regular monitoring of drinking water quality, as required by SDWA, or to submit monitoring results in a timely fashion to the primacy agency or EPA.
Public notification & other	Failure to provide notification to the public as required by the Violations of Public Notification Rule and the Consumer Confidence Report Rule, and violations of other requirements such as those violations related to variances and exemptions.

Violations

Violation Category Code	Violation Type Description	Rule Name	Contaminant Name	Violation ID	Compliance Status Description	Compliance Period Begin Date	Compliance Period End Date	Is Health Based Ind
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2531537	Returned to Compliance	20-OCT-2025	-	No
RPT	Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2531536	Returned to Compliance	09-SEP-2025	-	No
TT	Treatment Technique, Level 1 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2531535	Returned to Compliance	09-SEP-2025	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	2529245	Open	03-SEP-2025	-	Yes
TT	Failure To Address Deficiency	Ground Water Rule	Groundwater Rule	2529246	Open	03-SEP-2025	-	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2523739	Returned to Compliance	10-AUG-2025	-	No
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	2523736	Returned to Compliance	01-JUN-2025	30-JUN-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2516441	Returned to Compliance	11-MAY-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2523738	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2516440	Returned to Compliance	01-JAN-2025	31-MAR-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2507878	Returned to Compliance	01-OCT-2024	31-DEC-2024	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2432626	Returned to Compliance	01-JUL-2024	30-SEP-2024	Yes
RPT	Notify Level 1/Level 2 Treatment Technique Violation, Correct Action (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2424464	Returned to Compliance	10-JUN-2024	-	No
TT	Treatment Technique, Level 2 Assessment (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2424463	Returned to Compliance	10-JUN-2024	-	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2424466	Returned to Compliance	01-APR-2024	30-JUN-2024	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	2513536	Returned to Compliance	01-JAN-2024	31-DEC-2024	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2416944	Returned to Compliance	01-JAN-2024	31-MAR-2024	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	2338417	Returned to Compliance	09-NOV-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2407760	Returned to Compliance	01-OCT-2023	31-DEC-2023	Yes
RPT	Reporting, Assessment Forms (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2409955	Returned to Compliance	16-AUG-2023	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2338416	Returned to Compliance	01-JUL-2023	30-SEP-2023	Yes
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2108665	Returned to Compliance	01-JUL-2020	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2031026	Returned to Compliance	01-APR-2020	30-JUN-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2022321	Returned to Compliance	01-JAN-2020	31-MAR-2020	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2009997	Returned to Compliance	01-OCT-2019	31-DEC-2019	Yes
MR	Monitoring, Turbidity (Enhanced SWTR)	Interim and Long Term 1 Enhanced Surface Water Treatment Rule	Interim Enhanced Surface Water Treatment Rule	1912488	Returned to Compliance	01-JAN-2019	31-JAN-2019	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1919578	Returned to Compliance	01-JAN-2019	31-MAR-2019	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1916204	Returned to Compliance	01-JAN-2019	31-MAR-2019	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1908712	Returned to Compliance	01-OCT-2018	31-DEC-2018	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1823761	Returned to Compliance	10-AUG-2018	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1831705	Returned to Compliance	01-JUL-2018	30-SEP-2018	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1815145	Returned to Compliance	15-MAY-2018	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1817612	Returned to Compliance	11-MAY-2018	-	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1823760	Returned to Compliance	01-APR-2018	30-JUN-2018	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1807294	Returned to Compliance	14-FEB-2018	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1809791	Returned to Compliance	10-FEB-2018	-	No
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Benzo(a)pyrene	1815144	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1817611	Returned to Compliance	01-JAN-2018	31-MAR-2018	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1736358	Returned to Compliance	14-NOV-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1737983	Returned to Compliance	10-NOV-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1736360	Returned to Compliance	10-NOV-2017	-	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) phthalate	1807291	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	HEXACHLOROBENZENE	1807292	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
TT	Treatment Technique Precursor Removal	Stage 1 Disinfectants and Disinfection Byproducts Rule	CARBON, TOTAL	1809790	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MCL	Maximum Contaminant Level Violation, Average	Synthetic Organic Chemicals	Benzo(a)pyrene	1807289	Returned to Compliance	01-OCT-2017	31-DEC-2017	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Benzo(a)pyrene	1807293	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Di(2-ethylhexyl) adipate	1807290	Returned to Compliance	01-OCT-2017	31-DEC-2017	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1736355	Open	11-SEP-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1736354	Open	11-SEP-2017	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1736356	Open	11-SEP-2017	-	No

1 - 50 of 293

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
26315353010	2531535	SIF	State Public Notification received	06-MAR-2026	State	-
26315363011	2531537	SOX	State Compliance achieved	06-MAR-2026	State	-
26315363011	2531536	SOX	State Compliance achieved	06-MAR-2026	State	-
26237362004	2523736	SOX	State Compliance achieved	20-FEB-2026	State	-
26164403003	2523738	SOX	State Compliance achieved	05-DEC-2025	State	-
26164403003	2516441	SOX	State Compliance achieved	05-DEC-2025	State	-
26164403003	2516440	SOX	State Compliance achieved	05-DEC-2025	State	-
26164403003	2523739	SOX	State Compliance achieved	05-DEC-2025	State	-
26292458	2529245	SFJ	State Formal Notice of Violation issued	03-OCT-2025	State	-
26292458	2529246	SFJ	State Formal Notice of Violation issued	03-OCT-2025	State	-
25135363002	2513536	SOX	State Compliance achieved	24-MAR-2025	State	-
253262685012	2432626	SOX	State Compliance achieved	20-FEB-2025	State	-
25078783001	2507878	SOX	State Compliance achieved	13-FEB-2025	State	-
252446388004	2424464	SOX	State Compliance achieved	30-JAN-2025	State	-
252446388004	2424463	SOX	State Compliance achieved	30-JAN-2025	State	-
242446685006	2424466	SOX	State Compliance achieved	24-SEP-2024	State	-
241694487003	2416944	SOX	State Compliance achieved	24-APR-2024	State	-
240776087001	2407760	SOX	State Compliance achieved	01-MAR-2024	State	-
240995585002	2409955	SOX	State Compliance achieved	08-FEB-2024	State	-
243841681004	2338416	SOX	State Compliance achieved	05-JAN-2024	State	-
243841780007	2338417	SOX	State Compliance achieved	09-NOV-2023	State	-
210999763001	2009997	SOX	State Compliance achieved	19-FEB-2021	State	-
210999763001	2031026	SOX	State Compliance achieved	19-FEB-2021	State	-
210999763001	2022321	SOX	State Compliance achieved	19-FEB-2021	State	-
210866568002	2108665	SOX	State Compliance achieved	28-JAN-2021	State	-
203170551001	1831705	SOX	State Compliance achieved	18-DEC-2019	State	-
190871257001	1908712	SOX	State Compliance achieved	16-SEP-2019	State	-
190871257001	1916204	SOX	State Compliance achieved	16-SEP-2019	State	-
191957855004	1919578	SOX	State Compliance achieved	05-JUL-2019	State	-
191248856002	1912488	SOX	State Compliance achieved	12-APR-2019	State	-
182376051022	1823760	SOX	State Compliance achieved	07-AUG-2018	State	-
182376051022	1823761	SOX	State Compliance achieved	07-AUG-2018	State	-
181761151021	1817611	SOX	State Compliance achieved	23-JUL-2018	State	-
181514450020	1817612	SOX	State Compliance achieved	12-JUN-2018	State	-
181514450020	1815145	SOX	State Compliance achieved	12-JUN-2018	State	-
181514450020	1815144	SOX	State Compliance achieved	12-JUN-2018	State	-
180798532002	1522106	SOX	State Compliance achieved	02-APR-2018	State	-
180935245002	1736359	SOX	State Compliance achieved	02-APR-2018	State	-
180935245002	1727544	SOX	State Compliance achieved	02-APR-2018	State	-
180935245002	1718669	SOX	State Compliance achieved	02-APR-2018	State	-
180935245002	1709352	SOX	State Compliance achieved	02-APR-2018	State	-
180886739002	1643237	SOX	State Compliance achieved	02-APR-2018	State	-
180886739002	1630929	SOX	State Compliance achieved	02-APR-2018	State	-
180886739002	1619396	SOX	State Compliance achieved	02-APR-2018	State	-
180886739002	1608867	SOX	State Compliance achieved	02-APR-2018	State	-
180798532002	1530006	SOX	State Compliance achieved	02-APR-2018	State	-
180798532002	1515121	SOX	State Compliance achieved	02-APR-2018	State	-
180798532002	1507985	SOX	State Compliance achieved	02-APR-2018	State	-
183875526003	1438755	SOX	State Compliance achieved	02-APR-2018	State	-
180729049003	1807290	SOX	State Compliance achieved	12-MAR-2018	State	-

1 - 50 of 281

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
MONONGAHELA RIVER	001	Yes	Intake	Surface water	Permanent	Active
LAB TAP	101	No	Sampling Station	-	-	Active
TRI-COUNTY WTP	300	No	Treatment Plant	-	-	Active
RIDGEWOOD BS	301	No	Treatment Plant	-	-	Active

1 - 4 of 4

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TRI-COUNTY WTP	300	Gaseous Chlorination, Pre	Disinfection
TRI-COUNTY WTP	300	Permanganate	Organics removal
TRI-COUNTY WTP	300	Activated Carbon, Powdered	Taste / odor control
TRI-COUNTY WTP	300	Coagulation	Particulate removal
TRI-COUNTY WTP	300	Flocculation	Particulate removal
TRI-COUNTY WTP	300	Sedimentation	Particulate removal
TRI-COUNTY WTP	300	Filtration, Rapid Sand	Particulate removal
TRI-COUNTY WTP	300	Gaseous Chlorination, Post	Disinfection
TRI-COUNTY WTP	300	pH Adjustment, Post	Corrosion control
TRI-COUNTY WTP	300	Inhibitor, Orthophosphate	Corrosion control
TRI-COUNTY WTP	300	Aeration, Diffused	Disinfection by-products control
TRI-COUNTY WTP	300	Innovative	Other
RIDGEWOOD BS	301	Hypochlorination, Post	Disinfection

1 - 13 of 13

For more information on a Water System:
Ask the operators of your water system, contact your primacy agency or file a Freedom of Information Act (FOIA) request.
Drinking water in general: Find out more about your drinking water web site or call the Safe Drinking Water Hotline (1-800-426-4791). EPA has also prepared a table about various regulated drinking water contaminants.
Tools for accessing EPA drinking water data: Safe Drinking Water Information System (SDWIS) Federal Reporting Services and Drinking Water Performance and Results Report.
Research Data: As well as monitoring the levels of drinking water contaminants for which EPA has set standards, EPA, states, and water systems also carry out studies of contaminants that may need to be regulated in the future. For more information about these contaminants, please see the National Contaminant Occurrence Database.

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