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Water system · PWSID NJ1425001

MOUNTAIN LAKES WATER DEP

RIVERDALE, NJ · ~4,012 people served

Check your exact address → RIVERDALE overview
67
Fair
PurityRadar safety score

PWSID

NJ1425001

State

New Jersey

City

RIVERDALE

Population served

4,012

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

Latest detections from EPA’s UCMR5 monitoring (through Jul 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

6.3 ppt

limit 4 ppt

Above EPA limit · 1.6×

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

316

Violations on record

2

Unaddressed

0

Health-based

40

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2026. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Dec 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2021 Unaddressed
Other · EPA contaminant 7000 began Jul 2024 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Other · EPA contaminant 7000 began Jul 2023 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2021 Resolved
Other · EPA contaminant 7000 began Jul 2016 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved
Other · EPA contaminant 7000 began Jul 2013 Resolved
Other · EPA contaminant 7000 began Jul 2011 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved
Monitoring & reporting · Nitrate began Jan 2007 Resolved

Recent enforcement actions

  • State action · SFJ Mar 2026
  • State action · SFJ Sep 2024
  • State action · SOX Aug 2024
  • State action · SOX Jan 2024
  • State action · SFJ Jan 2024
  • State action · SOX Sep 2023
  • State action · SFJ Aug 2023
  • State action · SFJ Aug 2021

This profile is built from EPA public records for system NJ1425001 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.