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
ArchivedMonitoring, Regular
—Nitrate
January 1, 2025 – December 31, 2025
ArchivedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2024 – August 22, 2024
ResolvedConsumer Confidence Report Inadequate Reporting
—Consumer Confidence Rule
October 1, 2023 – January 26, 2024
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2023 – September 5, 2023
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2021
UnaddressedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2016 – August 4, 2016
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2014 – August 19, 2014
ResolvedConsumer Confidence Report Complete Failure to Report
—Consumer Confidence Rule
July 1, 2013 – July 30, 2013
ResolvedMonitoring, Regular
—Ethylbenzene
July 1, 2005 – September 30, 2005
ResolvedMonitoring, Regular
—Carbon tetrachloride
July 1, 2005 – September 30, 2005
ResolvedMonitoring, Regular
—Styrene
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—1,2-Dichloroethane
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—Carbon tetrachloride
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—1,2-Dichloropropane
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—CHLOROBENZENE
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—Toluene
April 1, 2005 – June 30, 2005
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—1,1,1-Trichloroethane
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—o-Dichlorobenzene
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—Trichloroethylene
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—Xylenes, Total
January 1, 2005 – March 31, 2005
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
October 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Carbon tetrachloride
October 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—Ethylbenzene
October 1, 2004 – December 31, 2004
ResolvedMonitoring, Regular
—DICHLOROMETHANE
July 1, 2004 – September 30, 2004
ResolvedMonitoring, Regular
—1,2-Dichloropropane
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—Xylenes, Total
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—Tetrachloroethylene
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—CHLOROBENZENE
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—Toluene
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—Xylenes, Total
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—DICHLOROMETHANE
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—cis-1,2-Dichloroethylene
April 1, 2004 – June 30, 2004
ResolvedMonitoring, Regular
—1,1,2-Trichloroethane
January 1, 2004 – March 31, 2004
ResolvedMonitoring, Regular
—1,2,4-Trichlorobenzene
January 1, 2004 – March 31, 2004
ResolvedMonitoring, 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
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate | — | Archived |
| January 1, 2025 – December 31, 2025 | Monitoring, Regular | Nitrate | — | Archived |
| July 1, 2024 – August 22, 2024 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| October 1, 2023 – January 26, 2024 | Consumer Confidence Report Inadequate Reporting | Consumer Confidence Rule | — | Resolved |
| July 1, 2023 – September 5, 2023 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2021 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Unaddressed |
| July 1, 2016 – August 4, 2016 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2014 – August 19, 2014 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2013 – July 30, 2013 | Consumer Confidence Report Complete Failure to Report | Consumer Confidence Rule | — | Resolved |
| July 1, 2005 – September 30, 2005 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| July 1, 2005 – September 30, 2005 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | Styrene | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | 1,2-Dichloroethane | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| April 1, 2005 – June 30, 2005 | Monitoring, Regular | Toluene | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | 1,1,1-Trichloroethane | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | o-Dichlorobenzene | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | Trichloroethylene | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2005 – March 31, 2005 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| October 1, 2004 – December 31, 2004 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| October 1, 2004 – December 31, 2004 | Monitoring, Regular | Carbon tetrachloride | — | Resolved |
| October 1, 2004 – December 31, 2004 | Monitoring, Regular | Ethylbenzene | — | Resolved |
| July 1, 2004 – September 30, 2004 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | 1,2-Dichloropropane | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | CHLOROBENZENE | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | Toluene | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | Xylenes, Total | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | DICHLOROMETHANE | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| April 1, 2004 – June 30, 2004 | Monitoring, Regular | cis-1,2-Dichloroethylene | — | Resolved |
| January 1, 2004 – March 31, 2004 | Monitoring, Regular | 1,1,2-Trichloroethane | — | Resolved |
| January 1, 2004 – March 31, 2004 | Monitoring, Regular | 1,2,4-Trichlorobenzene | — | Resolved |
| January 1, 2004 – March 31, 2004 | Monitoring, Regular | 1,2-Dichloropropane | — | 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
- November 3, 2025State Formal Notice of Violation issued12 linked violations
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