Water system · PWSID NY2902835
LIBERTY UTILITIES NEW YORK - LYNBROOK
PWSID
NY2902835
State
New York
City
MERRICK
Population served
220,000
Primary source
Groundwater
Score history
▼ 17 points — the score moved from 100 to 83 on Jun 18, 2026, as newly published EPA data was incorporated.
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 Mar 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
5.1 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
6.3 ppt
limit 10 ppt
PFNA
Perfluorononanoic acid
4.1 ppt
limit 10 ppt
Lithium
14,900 ppt
limit —
Violations & enforcement
3
Violations on record
0
Unaddressed
3
Health-based
10
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement May 2025. Official EPA record →
Recent enforcement actions
- State action · SOX May 2025
- State action · SOX May 2025
- State action · SFG May 2025
- State action · SFG May 2025
- State action · SIF May 2025
- State action · SFJ May 2025
- State action · SIE May 2025
- State action · SIF Jan 2025
Area water-quality monitoring
Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.
Nitrate
7 stations · latest Dec 2025
Fluoride
3 stations · latest May 2023
Manganese
3 stations · latest May 2023
Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.
This profile is built from EPA public records for system NY2902835 — 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.