Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PA1150066
PWS Name	OXFORD BOROUGH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	5280
County Served	Chester

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
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	2520492	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2520493	Returned to Compliance	01-APR-2025	30-JUN-2025	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2317826	Returned to Compliance	01-MAR-2023	31-MAR-2023	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2234797	Returned to Compliance	01-AUG-2022	31-AUG-2022	No
MON	Monitoring, Routine (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	2127444	Returned to Compliance	01-JUL-2021	31-JUL-2021	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	2122262	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	2122263	Returned to Compliance	01-APR-2021	30-JUN-2021	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	2012332	Returned to Compliance	01-JAN-2020	31-JAN-2020	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1931258	Returned to Compliance	11-JUL-2019	-	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1819980	Returned to Compliance	01-APR-2018	30-JUN-2018	No
RPT	Report Sample Result/Fail Monitor (RTCR)	Revised Total Coliform Rule	Revised Total Coliform Rule	1634363	Returned to Compliance	01-JUL-2016	-	No
MR	Monitoring of Treatment (SWTR-Unfilt/GWR)	Ground Water Rule	Groundwater Rule	1314662	Returned to Compliance	01-JAN-2013	31-JAN-2013	No
TT	Treatment Technique (SWTR and GWR)	Ground Water Rule	Groundwater Rule	1235716	Returned to Compliance	01-JUL-2012	31-JUL-2012	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1238240	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1238241	Returned to Compliance	01-APR-2012	30-JUN-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Antimony, Total	1303352	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	1303374	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	1303373	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	1303372	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	1303371	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	1303370	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	1303369	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	1303368	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	1303367	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	1303366	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	1303365	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	1303364	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	1303363	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	1303362	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	1303361	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	1303360	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	o-Dichlorobenzene	1303359	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	DICHLOROMETHANE	1303358	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Xylenes, Total	1303357	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	1303346	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	cis-1,2-Dichloroethylene	1303356	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	1303355	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Selenium	1303351	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Nickel	1303350	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Mercury	1303349	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Fluoride	1303348	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	CYANIDE	1303347	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	1303345	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Barium	1303344	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Arsenic Rule	Arsenic	1303343	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Thallium, Total	1303354	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Inorganic Chemicals	Beryllium, Total	1303353	Returned to Compliance	01-JAN-2012	31-DEC-2012	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Endrin	1136399	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1136397	Returned to Compliance	01-JUL-2011	30-SEP-2011	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	BHC-GAMMA	1136400	Returned to Compliance	01-JUL-2011	30-SEP-2011	No

1 - 50 of 138

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
26204922001	2520493	SOX	State Compliance achieved	18-NOV-2025	State	-
26204922001	2520492	SOX	State Compliance achieved	18-NOV-2025	State	-
231782681002	2317826	SOX	State Compliance achieved	11-MAY-2023	State	-
223479774001	2234797	SOX	State Compliance achieved	30-SEP-2022	State	-
222744468001	2127444	SOX	State Compliance achieved	04-FEB-2022	State	-
212226268001	2122263	SOX	State Compliance achieved	03-AUG-2021	State	-
212226268001	2122262	SOX	State Compliance achieved	03-AUG-2021	State	-
201233262002	2012332	SOX	State Compliance achieved	12-MAR-2020	State	-
191998052001	1819980	SOX	State Compliance achieved	06-SEP-2019	State	-
193125858002	1931258	SOX	State Compliance achieved	06-SEP-2019	State	-
173436338001	1634363	SOX	State Compliance achieved	11-OCT-2016	State	-
133824015001	1238241	SOX	State Compliance achieved	16-SEP-2013	State	-
133824015001	1238240	SOX	State Compliance achieved	16-SEP-2013	State	-
131466219033	1314662	SOX	State Compliance achieved	13-JUN-2013	State	-
130334321001	1303355	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303374	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303373	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303372	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303371	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303370	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303369	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303368	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303367	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303366	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303365	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303364	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303363	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303362	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303361	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303360	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303359	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303358	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303357	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303343	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303344	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303345	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303346	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303347	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303348	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303349	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303350	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303351	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303352	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303353	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303354	SOX	State Compliance achieved	11-JUN-2013	State	-
130334321001	1303356	SOX	State Compliance achieved	11-JUN-2013	State	-
123571613001	1235716	SOX	State Compliance achieved	28-AUG-2012	State	-
12363979001	1136398	SOX	State Compliance achieved	28-DEC-2011	State	-
12363979001	1136397	SOX	State Compliance achieved	28-DEC-2011	State	-
12363997003	1136399	SOX	State Compliance achieved	28-OCT-2011	State	-

1 - 50 of 138

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
CHESTER WATER AUTH	008	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL 12	006	Yes	Well	Ground water	Permanent	Active
WELL 9	004	Yes	Well	Ground water	Permanent	Active
WELL 8	003	Yes	Well	Ground water	Permanent	Active
WELL 7	002	Yes	Well	Ground water	Permanent	Active
WELL 3	001	Yes	Well	Ground water	Permanent	Active
WELL 13	007	Yes	Well	Ground water	Other	Inactive
WELL 11	005	Yes	Well	Ground water	Other	Inactive
WATER PLANT	101	No	Sampling Station	-	-	Active
CHESTER WATER AUTH	108	No	Sampling Station	-	-	Active
WELL #11	102	No	Sampling Station	-	-	Inactive
MAIN PLANT	300	No	Treatment Plant	-	-	Active
WELL 3 PLANT	302	No	Treatment Plant	-	-	Active
WELL 7 PLANT	303	No	Treatment Plant	-	-	Active
WELL 8 PLANT	304	No	Treatment Plant	-	-	Active
WELL 9 PLANT	305	No	Treatment Plant	-	-	Active
WELL 11 PLANT	301	No	Treatment Plant	-	-	Inactive

1 - 17 of 17

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
MAIN PLANT	300	Hypochlorination, Post	Disinfection
MAIN PLANT	300	pH Adjustment, Post	Corrosion control
MAIN PLANT	300	Aeration, Packed Tower	Organics removal
MAIN PLANT	300	4-Log Treatment of Viruses	Disinfection
WELL 3 PLANT	302	Sequestration	Manganese removal
WELL 3 PLANT	302	Sequestration	Iron removal
WELL 7 PLANT	303	Sequestration	Manganese removal
WELL 7 PLANT	303	Sequestration	Iron removal
WELL 8 PLANT	304	Sequestration	Manganese removal
WELL 8 PLANT	304	Sequestration	Iron removal
WELL 9 PLANT	305	Sequestration	Manganese removal
WELL 9 PLANT	305	Sequestration	Iron removal

1 - 12 of 12

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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