Public Water Partners

RIVERDALE, NJ · Morris County

MOUNTAIN LAKES WATER DEP Water System

Consumer Confidence Report status

MOUNTAIN LAKES WATER DEP must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show 1 item for MOUNTAIN LAKES WATER DEP that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace New Jersey’s official records. Always confirm current status with New Jersey before making decisions based on this information.

System facts

System ID (PWSID)
NJ1425001
System type
Community Water System
Population served
4,012
Service connections
1,501
Ownership
local government
Water source
groundwater (wells)

MOUNTAIN LAKES WATER DEP is one of 97 community water systems in New Jersey in the 3,301 to 10,000 people size category, serving 4,012 people from groundwater.

As of August 1, 2026, its federal record holds 39 entries between 2004 and 2025, of which 1 remains open; none are health-based.

Of the 39, 32 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, the Consumer Confidence Rule, and inorganic chemicals.

Violation history

  • Monitoring, Regular

    Nitrate

    January 1, 2025 – December 31, 2025

    Archived
  • Monitoring, Regular

    Nitrate

    January 1, 2025 – December 31, 2025

    Archived
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2024 – August 22, 2024

    Resolved
  • Consumer Confidence Report Inadequate Reporting

    Consumer Confidence Rule

    October 1, 2023 – January 26, 2024

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2023 – September 5, 2023

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2021

    Unaddressed
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2016 – August 4, 2016

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2014 – August 19, 2014

    Resolved
  • Consumer Confidence Report Complete Failure to Report

    Consumer Confidence Rule

    July 1, 2013 – July 30, 2013

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    July 1, 2005 – September 30, 2005

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    July 1, 2005 – September 30, 2005

    Resolved
  • Monitoring, Regular

    Styrene

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    Toluene

    April 1, 2005 – June 30, 2005

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    o-Dichlorobenzene

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    January 1, 2005 – March 31, 2005

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    October 1, 2004 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    October 1, 2004 – December 31, 2004

    Resolved
  • Monitoring, Regular

    Ethylbenzene

    October 1, 2004 – December 31, 2004

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    July 1, 2004 – September 30, 2004

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    Tetrachloroethylene

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    CHLOROBENZENE

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    Toluene

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    Xylenes, Total

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    DICHLOROMETHANE

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    cis-1,2-Dichloroethylene

    April 1, 2004 – June 30, 2004

    Resolved
  • Monitoring, Regular

    1,1,2-Trichloroethane

    January 1, 2004 – March 31, 2004

    Resolved
  • Monitoring, Regular

    1,2,4-Trichlorobenzene

    January 1, 2004 – March 31, 2004

    Resolved
  • Monitoring, Regular

    1,2-Dichloropropane

    January 1, 2004 – March 31, 2004

    Resolved

Archived closed in EPA's records (typically due to age or a data correction)Resolved addressed and confirmed by the stateUnaddressed no corrective action on record yet

Enforcement actions

Common questions

Is MOUNTAIN LAKES WATER DEP required to publish a Consumer Confidence Report?

Yes. MOUNTAIN LAKES WATER DEP is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is MOUNTAIN LAKES WATER DEP’s next Consumer Confidence Report due?

MOUNTAIN LAKES WATER DEP’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

Does MOUNTAIN LAKES WATER DEP have any open drinking water violations on record?

As of August 1, 2026, EPA's federal records show 1 item for MOUNTAIN LAKES WATER DEP that is open and awaiting resolution. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

RYDEN, WILLIAM

973-334-1577

RIVERDALE, NJ 07457