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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.

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Violations

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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	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	2527237	Returned to Compliance	01-JUL-2025	-	No
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2523451	Returned to Compliance	01-APR-2025	30-JUN-2025	Yes
MCL	Maximum Contaminant Level Violation, Average	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2516293	Returned to Compliance	01-JAN-2025	31-MAR-2025	Yes
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1823366	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1823367	Returned to Compliance	01-APR-2018	30-JUN-2018	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	1346000	Returned to Compliance	01-OCT-2013	-	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	8821504	Known	01-JUL-1984	30-JUN-1988	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4,5-TP	8525309	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	8525308	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Toxaphene	8525307	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Methoxychlor	8525312	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	8525311	Known	24-JUN-1982	23-JUN-1985	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	8525310	Known	24-JUN-1982	23-JUN-1985	No

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Enforcement Actions

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Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
25272372003	2527237	SOX	State Compliance achieved	18-SEP-2025	State	-
25234512002	2523451	SOX	State Compliance achieved	23-JUL-2025	State	-
25162931001	2516293	SOX	State Compliance achieved	27-MAY-2025	State	-
182336650001	1823367	SOX	State Compliance achieved	31-AUG-2018	State	-
182336650001	1823366	SOX	State Compliance achieved	31-AUG-2018	State	-
144600020001	1346000	SOX	State Compliance achieved	13-NOV-2013	State	-
8821504	8821504	SFJ	State Formal Notice of Violation issued	31-AUG-1988	State	-
8525307	8525311	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-
8525307	8525310	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-
8525307	8525309	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-
8525307	8525308	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-
8525307	8525307	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-
8525307	8525312	SIA	State Violation/Reminder Notice	02-OCT-1985	State	-

• 1 - 13 of 13

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All Facilities

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Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
SEWICKLEY WATER AUTH	002	Yes	Consecutive Connection	Ground water	Emergency	Active
WELLS 1 THRU 5	001	Yes	Well	Ground water	Other	Inactive
AMBRIDGE WATER AUTH	003	Yes	Consecutive Connection	Surface water	Permanent	Active
SEWICKLEY INTERCONN	102	No	Sampling Station	-	-	Active
AMBRIDGE INTERCONN	103	No	Sampling Station	-	-	Active
BELL ACRES INTERCON	104	No	Sampling Station	-	-	Active
CLEARWELL	101	No	Sampling Station	-	-	Inactive
AMBRIDGE PUMP STATIO	301	No	Treatment Plant	-	-	Active
BELL ACRES PS	302	No	Treatment Plant	-	-	Active
NEW HEALTHSOUTH CL2	304	No	Treatment Plant	-	-	Active
EDGEWORTH WAT TRT PL	300	No	Treatment Plant	-	-	Inactive
HEALTHSOUTH BOOSTER	303	No	Treatment Plant	-	-	Inactive

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Treatment Processes

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Facility Name	Facility ID	Treatment Process	Treatment Objective
AMBRIDGE PUMP STATIO	301	Hypochlorination, Post	Disinfection
AMBRIDGE PUMP STATIO	301	Fluoridation	Other
BELL ACRES PS	302	Hypochlorination, Post	Disinfection
BELL ACRES PS	302	Fluoridation	Other
HEALTHSOUTH BOOSTER	303	Hypochlorination, Post	Disinfection
NEW HEALTHSOUTH CL2	304	Hypochlorination, Post	Disinfection

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