Water Quality in Valhalla, NY (11001)

EPA violation data for public water systems serving ZIP code 11001.

Past Health-Based Violations

6 health-based violations were found in the past 5 years, meaning contaminant levels exceeded federal safety limits. All have since been resolved. There are also 5 monitoring/reporting violations.

More violations than 68% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

25,493

Population

8

Water Systems

11

Violations (5yr)

6

Health-Based

Location

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Water Systems Serving This Area (8)

New York City System

Surface water 8,271,000 people served
0 violations
Lead tested: 10 ppb (limit: 15 ppb)

Liberty Utilities New York - Lynbrook

3 health-based
Groundwater 220,000 people served
3 violations (5yr) · 3 health-based · All resolved
Lead tested: 4.2 ppb (limit: 15 ppb)

Liberty Utilities New York - Merrick

3 health-based
Groundwater 135,000 people served
3 violations (5yr) · 3 health-based · All resolved
Lead tested: 0 ppb (limit: 15 ppb)

Wa Of Western Nassau

Groundwater 120,000 people served
0 violations
Lead tested: 1.4 ppb (limit: 15 ppb)

Town Of Hempstead Water Department

Groundwater 110,000 people served
0 violations

Washington Lake Retreat

Groundwater 53 people served
0 violations

Ocean Surf Apts.

All resolved
Groundwater 46 people served
5 violations (5yr) · All resolved

Santorini Beach Hotel

Groundwater 25 people served
0 violations

Contaminants Found

Lead and Copper RuleHealth-Based

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

6 violations
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

5 violations
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
4.2 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Valhalla (11001) has more violations than 68% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 11.

Fewer violations 68th percentile More violations

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.

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