Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	PA7360164
PWS Name	NORTHWESTERN LANCASTER CO AUTH
PWS Type	Community water system
Owner Type	Local government
Primary Source	Surface water purchased
Primacy Type	State
Is Wholesaler?	No
Population Served	2968
County Served	Lancaster

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	TTHM	2532000	Returned to Compliance	01-JUL-2025	30-SEP-2025	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	2516850	Returned to Compliance	01-JAN-2025	31-MAR-2025	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1909941	Returned to Compliance	11-DEC-2018	-	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1808491	Returned to Compliance	01-DEC-2017	31-DEC-2017	No
MR	Monitoring of Treatment (SWTR-Filter)	Surface Water Treatment Rule	Surface Water Treatment Rule	1802952	Returned to Compliance	01-NOV-2017	30-NOV-2017	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1728564	Returned to Compliance	01-APR-2017	30-JUN-2017	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1711413	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
MR	Monitoring and Reporting (DBP)	Stage 2 Disinfectants and Disinfection Byproducts Rule	TTHM	1711414	Returned to Compliance	01-OCT-2016	31-DEC-2016	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1131504	Returned to Compliance	12-JUL-2011	-	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1134439	Returned to Compliance	11-JUL-2011	-	No
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	1131503	Returned to Compliance	01-APR-2011	30-JUN-2011	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	1131502	Returned to Compliance	01-APR-2011	30-JUN-2011	Yes
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	1119541	Returned to Compliance	01-JAN-2011	31-MAR-2011	Yes
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	1108969	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	1108968	Returned to Compliance	01-OCT-2010	31-DEC-2010	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	1017846	Returned to Compliance	12-JUL-2010	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrite	1024334	Returned to Compliance	01-JUL-2010	30-SEP-2010	No
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	1017845	Returned to Compliance	01-APR-2010	30-JUN-2010	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	1017844	Returned to Compliance	01-APR-2010	30-JUN-2010	Yes
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	1014151	Returned to Compliance	01-JAN-2010	31-MAR-2010	Yes
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	1008910	Returned to Compliance	01-OCT-2009	31-DEC-2009	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0914503	Returned to Compliance	12-APR-2009	-	No
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	0914502	Returned to Compliance	01-JAN-2009	31-MAR-2009	Yes
MR	Monitoring, Routine (IDSE)	Stage 2 Disinfectants and Disinfection Byproducts Rule	Stage 2 Disinfectants and Disinfection Byproducts Rule	#0899992	Returned to Compliance	01-APR-2008	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Total Haloacetic Acids (HAA5)	0730596	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	0730598	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	TTHM	0730597	Returned to Compliance	01-JUL-2007	30-SEP-2007	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	0708390	Returned to Compliance	01-OCT-2006	31-DEC-2006	No
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0618568	Returned to Compliance	12-APR-2006	-	No
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	0618567	Returned to Compliance	01-JAN-2006	31-MAR-2006	Yes
Other	Public Notification Violation for NPDWR Violation	Public Notice Rule and Revised PN Rule	Public Notice	0526572	Returned to Compliance	12-APR-2005	-	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0526570	Returned to Compliance	01-JAN-2005	31-MAR-2005	Yes
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	0526571	Returned to Compliance	01-JAN-2005	31-MAR-2005	No
MR	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	Lead and Copper Rule	0516713	Returned to Compliance	01-JAN-2005	-	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0516714	Returned to Compliance	01-OCT-2004	31-DEC-2004	Yes
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	0516715	Returned to Compliance	01-OCT-2004	31-DEC-2004	No
MCL	Maximum Contaminant Level Violation, Average	Nitrate Rule	Nitrate	0445511	Returned to Compliance	01-JUL-2004	30-SEP-2004	Yes
MR	Monitoring, Check/Repeat/Confirmation	Nitrate Rule	Nitrate	0421949	Returned to Compliance	01-OCT-2003	31-DEC-2003	No
MCL	Maximum Contaminant Level Violation, Single Sample	Nitrate Rule	Nitrate	0421948	Returned to Compliance	01-OCT-2003	31-DEC-2003	Yes
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	0324757	Returned to Compliance	01-FEB-2003	28-FEB-2003	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	0121647	Returned to Compliance	01-OCT-2000	31-DEC-2000	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	2,4-D	0023635	Returned to Compliance	01-JAN-2000	31-MAR-2000	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	Atrazine	0023634	Returned to Compliance	01-JAN-2000	31-MAR-2000	No
MR	Monitoring, Regular	Radionuclides and Revised Rad Rule	Gross Alpha, Excl. Radon and U	0030781	Returned to Compliance	01-JUL-1996	30-JUN-2000	No
MR	Monitoring, Regular	Synthetic Organic Chemicals	LASSO	9592949	Returned to Compliance	01-APR-1995	30-JUN-1995	No
MR	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	Lead and Copper Rule	9595878	Returned to Compliance	01-JAN-1995	23-DEC-1995	No
MR	Monitoring, Regular	Inorganic Chemicals	Cadmium	9550898	Returned to Compliance	01-JAN-1994	31-DEC-1994	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	9442002	Known	01-JAN-1994	31-MAR-1994	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2,4-Trichlorobenzene	9441984	Known	01-JAN-1994	31-MAR-1994	No
MR	Monitoring, Regular	Inorganic Chemicals	Chromium	9550899	Returned to Compliance	01-JAN-1994	31-DEC-1994	No

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Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
26320002002	2532000	SOX	State Compliance achieved	29-OCT-2025	State	-
25168502001	2516850	SOX	State Compliance achieved	13-MAY-2025	State	-
190994155001	1909941	SOX	State Compliance achieved	30-JAN-2019	State	-
180295251001	1808491	SOX	State Compliance achieved	06-MAR-2018	State	-
180295251001	1802952	SOX	State Compliance achieved	06-MAR-2018	State	-
182856445001	1728564	SOX	State Compliance achieved	11-OCT-2017	State	-
171141343001	1711414	SOX	State Compliance achieved	16-MAR-2017	State	-
171141343001	1711413	SOX	State Compliance achieved	16-MAR-2017	State	-
12141512001	1014151	SOX	State Compliance achieved	29-NOV-2011	State	-
12141512001	1017846	SOX	State Compliance achieved	29-NOV-2011	State	-
12141512001	1017845	SOX	State Compliance achieved	29-NOV-2011	State	-
12141512001	1017844	SOX	State Compliance achieved	29-NOV-2011	State	-
11315029009	1131503	SOX	State Compliance achieved	07-SEP-2011	State	-
11344398001	1134439	SOX	State Compliance achieved	07-SEP-2011	State	-
11315029009	1131502	SOX	State Compliance achieved	07-SEP-2011	State	-
11315029009	1131504	SOX	State Compliance achieved	07-SEP-2011	State	-
111954111007	1119541	SOX	State Compliance achieved	26-MAY-2011	State	-
11089688001	1108969	SOX	State Compliance achieved	03-FEB-2011	State	-
11089688001	1108968	SOX	State Compliance achieved	03-FEB-2011	State	-
11243346	1024334	SOX	State Compliance achieved	23-NOV-2010	State	-
10089105007	1008910	SOX	State Compliance achieved	15-MAR-2010	State	-
091450287002	0914502	SOX	State Compliance achieved	28-APR-2009	State	-
091450287002	0914503	SOX	State Compliance achieved	28-APR-2009	State	-
#0900902	#0899992	EOX	Federal Compliance achieved	28-OCT-2008	ODSWeb	-
083059873001	0730598	SOX	State Compliance achieved	02-NOV-2007	State	-
083059673001	0730596	SOX	State Compliance achieved	02-NOV-2007	State	-
083059673001	0730597	SOX	State Compliance achieved	02-NOV-2007	State	-
070839073001	0708390	SOX	State Compliance achieved	01-MAR-2007	State	-
061856767001	0618567	SOX	State Compliance achieved	04-MAY-2006	State	-
061856767001	0618568	SOX	State Compliance achieved	04-MAY-2006	State	-
064551156001	0445511	SOX	State Compliance achieved	24-FEB-2006	State	-
051671360001	0516713	SOX	State Compliance achieved	17-JUN-2005	State	-
051671360001	0516714	SOX	State Compliance achieved	17-JUN-2005	State	-
051671360001	0526570	SOX	State Compliance achieved	17-JUN-2005	State	-
051671360001	0526571	SOX	State Compliance achieved	17-JUN-2005	State	-
051671360001	0526572	SOX	State Compliance achieved	17-JUN-2005	State	-
051671360001	0516715	SOX	State Compliance achieved	17-JUN-2005	State	-
042194854001	0421948	SOX	State Compliance achieved	23-FEB-2004	State	-
042194854001	0421949	SOX	State Compliance achieved	23-FEB-2004	State	-
042475748001	0324757	SOX	State Compliance achieved	10-NOV-2003	State	-
01E0002	0121647	SOX	State Compliance achieved	24-APR-2001	State	-
00E0002	0030781	SOX	State Compliance achieved	07-NOV-2000	State	-
00E0001	0023635	SOX	State Compliance achieved	19-MAY-2000	State	-
00E0001	0023634	SOX	State Compliance achieved	19-MAY-2000	State	-
95E0004	9550900	SOX	State Compliance achieved	23-DEC-1995	State	-
95E0004	9595878	SOX	State Compliance achieved	23-DEC-1995	State	-
95E0004	9550907	SOX	State Compliance achieved	23-DEC-1995	State	-
95E0004	9550906	SOX	State Compliance achieved	23-DEC-1995	State	-
95E0004	9550905	SOX	State Compliance achieved	23-DEC-1995	State	-
95E0004	9550904	SOX	State Compliance achieved	23-DEC-1995	State	-

1 - 50 of 80

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
LANCASTER CITY INTER	003	Yes	Consecutive Connection	Surface water	Permanent	Active
WELL #3	004	Yes	Well	Ground water under the influence of surface water	Permanent	Active
WELL #2	002	Yes	Well	Ground water under the influence of surface water	Permanent	Active
WELL 1	001	Yes	Well	Ground water	Other	Inactive
DOE RUN WELL HOUSE	100	No	Sampling Station	-	-	Active
LANC INTERCONNECT	101	No	Sampling Station	-	-	Active
TREATMENT PLANT	300	No	Treatment Plant	-	-	Active
FRUITVILLE PK CHLORN	301	No	Treatment Plant	-	-	Active

1 - 8 of 8

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
TREATMENT PLANT	300	Filtration, Ultrafiltration	Particulate removal
TREATMENT PLANT	300	Ion Exchange	Organics removal
TREATMENT PLANT	300	Hypochlorination, Post	Disinfection
TREATMENT PLANT	300	pH Adjustment	Corrosion control
FRUITVILLE PK CHLORN	301	Hypochlorination, Post	Disinfection

1 - 5 of 5

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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