MOUNTAIN LAKES WATER DEP
New Jersey - Community Water System - PWSID: NJ1425001
System Information
| PWSID | NJ1425001 |
| System Name | MOUNTAIN LAKES WATER DEP |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 02 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 1, 1980 |
| Last Reported | Mar 27, 2026 |
Location & Contact
| State | New Jersey |
| City | RIVERDALE |
| ZIP Code | 07457 |
| Address | 91 NEWARK POMTON TURNPIKE |
| Organization | RYDEN, WILLIAM |
| Phone | 973-334-1577 |
Population & Service
| Population Served | 4,012 |
| Service Connections | 1,501 |
Drinking Water Violations (347)
This water system has 347 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2025 | - | MR | No | No | - | TT | - | Unaddressed | - | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Aug 31, 2025 | - | |
| Aug 1, 2025 | Aug 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Aug 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Jul 31, 2025 | - | |
| Jul 1, 2025 | Jul 31, 2025 | MR | No | Yes | - | 4.0 mg/L | - | Archived | Jul 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jan 1, 2025 | Dec 31, 2025 | MR | No | Yes | - | 10 mg/L | - | Archived | Dec 31, 2025 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2024 | - | |
| Jul 1, 2024 | - | Other | No | No | - | - | - | Resolved | Aug 22, 2024 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jan 26, 2024 | - | |
| Oct 1, 2023 | - | Other | No | No | - | - | - | Resolved | Jan 26, 2024 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Sep 5, 2023 | - | |
| Jul 1, 2023 | - | Other | No | No | - | - | - | Resolved | Sep 5, 2023 | - | |
| Jul 1, 2021 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Apr 1, 2021 | Jun 30, 2021 | MR | No | No | - | 4.0 mg/L | - | Resolved | Jun 30, 2021 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Aug 4, 2016 | - | |
| Jul 1, 2016 | - | Other | No | No | - | - | - | Resolved | Aug 4, 2016 | - | |
| Jul 1, 2014 | - | Other | No | No | - | - | - | Resolved | Aug 19, 2014 | - | |
| Jul 1, 2014 | - | Other | No | No | - | - | - | Resolved | Aug 19, 2014 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Jul 30, 2013 | - | |
| Jul 1, 2013 | - | Other | No | No | - | - | - | Resolved | Jul 30, 2013 | - | |
| Jul 1, 2011 | - | Other | No | No | - | - | - | Resolved | Aug 25, 2011 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Jan 1, 2007 | Dec 31, 2007 | MR | No | Yes | - | 10 mg/L | - | Resolved | Dec 31, 2007 | - | |
| Dec 1, 2005 | Dec 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2005 | - | |
| Dec 1, 2005 | Dec 31, 2005 | MR | No | No | - | 5% of samples | - | Resolved | Dec 31, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 1 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.2 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.7 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 2005 | - | |
| Jul 1, 2005 | Sep 30, 2005 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Sep 30, 2005 | - |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.