Safe Drinking Water Information System (SDWIS) Federal Reporting Services

Your Drinking Water Query results from SDWIS Fed Reporting Services

PWS ID	NJ1425001
PWS Name	MOUNTAIN LAKES WATER DEP
PWS Type	Community water system
Owner Type	Local government
Primary Source	Ground water
Primacy Type	State
Is Wholesaler?	No
Population Served	4012
County Served	Morris

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	Lead Consumer Notice	Lead and Copper Rule	Lead and Copper Rule	112584	Open	30-DEC-2025	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	112581	Known	01-AUG-2025	31-AUG-2025	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	112580	Known	01-JUL-2025	31-JUL-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	112582	Known	01-JAN-2025	31-DEC-2025	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	112583	Known	01-JAN-2025	31-DEC-2025	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112574	Returned to Compliance	01-JUL-2024	-	No
Other	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	Consumer Confidence Rule	112560	Returned to Compliance	01-OCT-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112555	Returned to Compliance	01-JUL-2023	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112548	Open	01-JUL-2021	-	No
MR	Monitoring and Reporting (DBP)	Stage 1 Disinfectants and Disinfection Byproducts Rule	Chlorine	112547	Returned to Compliance	01-APR-2021	30-JUN-2021	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112545	Returned to Compliance	01-JUL-2016	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112543	Returned to Compliance	01-JUL-2014	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112540	Returned to Compliance	01-JUL-2013	-	No
Other	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	Consumer Confidence Rule	112527	Returned to Compliance	01-JUL-2011	-	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	100908	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	100708	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Regular	Nitrate Rule	Nitrate	100808	Returned to Compliance	01-JAN-2007	31-DEC-2007	No
MR	Monitoring, Routine Major (TCR)	Total Coliform Rule	Coliform (TCR)	44306	Returned to Compliance	01-DEC-2005	31-DEC-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	93207	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Styrene	91107	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	91007	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Ethylbenzene	93107	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	90907	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Toluene	93007	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	92907	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Benzene	90807	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	90707	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	CHLOROBENZENE	92807	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	92707	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Tetrachloroethylene	90607	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	90507	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,2-Trichloroethane	92607	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	90407	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Trichloroethylene	92507	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	92407	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloropropane	90307	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	90207	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Carbon tetrachloride	92307	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	92207	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1,1-Trichloroethane	90107	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	92107	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,2-Dichloroethane	90007	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	89907	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	trans-1,2-Dichloroethylene	92007	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	89807	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	1,1-Dichloroethylene	91907	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	91807	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	Vinyl chloride	89707	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	89607	Returned to Compliance	01-JUL-2005	30-SEP-2005	No
MR	Monitoring, Regular	Volatile Organic Chemicals	p-Dichlorobenzene	91707	Returned to Compliance	01-JUL-2005	30-SEP-2005	No

1 - 50 of 320

Enforcement Actions

Latest Enforcement ID	Associated To Violation ID	Enforcement Action Type Code	Enforcement Action Description	Enforcement Date	Originator Description	Enforcement Comment
8751	112584	SFJ	State Formal Notice of Violation issued	18-MAR-2026	State	-
8748	112582	SIE	State Public Notification requested	10-FEB-2026	State	-
8750	112583	SIE	State Public Notification requested	10-FEB-2026	State	-
8744	112581	SIE	State Public Notification requested	03-NOV-2025	State	-
8746	112580	SIE	State Public Notification requested	03-NOV-2025	State	-
8726	112574	SFJ	State Formal Notice of Violation issued	12-SEP-2024	State	-
8706	112560	SOX	State Compliance achieved	26-JAN-2024	State	-
8709	112555	SOX	State Compliance achieved	05-SEP-2023	State	-
8686	112548	SFJ	State Formal Notice of Violation issued	10-AUG-2021	State	-
8684	112547	SIE	State Public Notification requested	27-JUL-2021	State	-
8681	112545	SFJ	State Formal Notice of Violation issued	24-AUG-2016	State	-
8680	112543	SOX	State Compliance achieved	19-AUG-2014	State	-
8671	112540	SFJ	State Formal Notice of Violation issued	07-AUG-2013	State	-
8648	112527	SOX	State Compliance achieved	25-AUG-2011	State	-
6709	100808	SFM	State Administrative Penalty assessed	31-DEC-2008	State	-
6709	100708	SFM	State Administrative Penalty assessed	31-DEC-2008	State	-
6709	100908	SFM	State Administrative Penalty assessed	31-DEC-2008	State	-
1306	44306	SFJ	State Formal Notice of Violation issued	22-FEB-2006	State	-
8670	57806	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	57906	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58006	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58106	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58206	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58306	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58406	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58506	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58606	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58706	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58806	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	58906	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59006	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59106	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59206	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59306	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59406	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59506	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59606	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59706	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59806	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	59906	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60006	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60106	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60206	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60306	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60406	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60506	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60606	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60706	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60806	SOX	State Compliance achieved	22-NOV-2005	State	-
8670	60906	SOX	State Compliance achieved	22-NOV-2005	State	-

1 - 50 of 320

All Facilities

Facility Name	Facility ID	Is Source	Facility Type Description	Water Type Description	Availability Description	Facility Activity Status
WELL 4 TOWPATH	4428	Yes	Well	Ground water	Other	Inactive
WELL TOWER HILL 2	4431	Yes	Well	Ground water	Permanent	Active
WELL 5	4427	Yes	Well	Ground water	Permanent	Active
WELL 3 TOWPATH	34561	Yes	Well	Ground water	Permanent	Active
WELL 4 TOWPATH	34515	Yes	Well	Ground water	Permanent	Active
WELL 3 TOWPATH ROAD	4430	Yes	Well	Ground water	Other	Inactive
DISTRIBUTION SYSTEM	14663	No	Distribution System/Zone	-	-	Active
HISTORICAL SAMPLING STATION	23252	No	Sampling Station	-	-	Active
WELL 5 TP	800	No	Treatment Plant	-	-	Active
DENVILLE WELLFIELD TP	801	No	Treatment Plant	-	-	Active
WELL 3 TOWPATH TP	802	No	Treatment Plant	-	-	Active
TOWER HILL TP	803	No	Treatment Plant	-	-	Active

1 - 12 of 12

Treatment Processes

Facility Name	Facility ID	Treatment Process	Treatment Objective
WELL 5 TP	800	Aeration, Packed Tower	Organics removal
WELL 5 TP	800	Gaseous Chlorination, Post	Disinfection
DENVILLE WELLFIELD TP	801	Hypochlorination, Post	Disinfection
WELL 3 TOWPATH TP	802	Hypochlorination, Post	Disinfection
TOWER HILL TP	803	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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