Water Quality in Merrick, NY (11021)
EPA violation data for public water systems serving ZIP code 11021.
Active Health Violations
6 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 76% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
19,783
Population
13
Water Systems
17
Violations (5yr)
6
Health-Based
Location
Loading map...
Water Systems Serving This Area (13)
Liberty Utilities New York - Lynbrook
3 health-basedLiberty Utilities New York - Merrick
3 health-basedWa Of Western Nassau
Town Of Hempstead Water Department
Wa Of Great Neck North
Coram Municipal Office
Blueberry Ridge Mobile Village
All resolvedPinewood Park
All resolvedElectro Audio Dynamics Inc
Rolling Acres Mhp
Griswold Mhp Llc
All resolvedMarsh Brook Estates
All resolvedRoute 81 Rv Park
Contaminants Found
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Missed testing deadlines — not a detection of bacteria.
A naturally occurring element that can cause cancer and other health effects at high levels.
Annual water quality report delivery requirement.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2025
How Does This Compare?
Merrick (11021) has more violations than 76% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 17.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.