Water Quality: Merrick, NY
12 water systems • 372,655 people served
Multiple Health ViolationsWater Quality Summary
Merrick is served by 12 public water systems with a combined service population of 372,655 people, and has 150 EPA Safe Drinking Water Act violations on record. Critically, 16 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Merrick's violation count is 27% above the national average for New York. Contaminants associated with violations include Contaminant 1017, Disinfection Byproducts, E. coli, Fecal Coliform.
Contaminants Found
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Indicates direct fecal contamination; associated with diarrhea, cramps, nausea, and potential severe illness.
Common source: Human and animal fecal waste
EPA limit: Zero tolerance (any positive triggers violations)
Water Systems Serving Merrick
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| LIBERTY UTILITIES NEW YORK - LYNBROOK | NY2902835 | Groundwater | 220,000 | 45 |
| LIBERTY UTILITIES NEW YORK - MERRICK | NY2902840 | Groundwater | 135,000 | 92 |
| LIBERTY UTILITIES NEW YORK - SEA CLIFF | NY2902853 | Groundwater | 13,400 | 0 |
| MOUNT EBO WS | NY3920885 | Groundwater | 1,500 | 1 |
| WILD OAKS WATER COMPANY | NY5903479 | Surface Water | 805 | 4 |
| KINGSVALE WATER CO | NY5503392 | Groundwater | 600 | 0 |
| DYKEER WATER CO. | NY5920065 | Surface Water | 480 | 4 |
| WEST BRANCH ACRES | NY3905692 | Groundwater | 292 | 0 |
| LIBERTY UTILITIES NEW YORK - MILL NECK | NY2902838 | Groundwater | 280 | 0 |
| ARBOR HILLS WATER WORKS | NY5922910 | Groundwater | 180 | 2 |
| SPRING GLEN LAKE | NY5203335 | Groundwater | 68 | 2 |
| HOEY-DE GRAW WATERWORKS | NY5203353 | Groundwater | 50 | 0 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in New York
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.