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Official EPA SDWIS Verified ReportWater Quality & Testing GuideHistorical Record: No Recorded SDWIS Violations

ZIP Code 11211 Water Quality & Testing Report

Brooklyn, NY · Kings County County · Updated for 2026

Sahajul HaqueCompiled & verified by Sahajul Haque from official EPA SDWIS records
Public Health & Medical Notice: Drinking water quality data on this page reflects historical compliance records submitted under the Safe Drinking Water Act. This information does not constitute medical advice or a real-time safety guarantee. If you are pregnant, nursing, preparing infant formula, or immunocompromised, consult a healthcare provider. Boiling water kills biological pathogens, but does NOT remove chemical contaminants like lead, arsenic, or PFAS.
Quick EPA Verified Answer

Is Tap Water Safe to Drink in ZIP 11211 (Brooklyn, NY)?

Caution / Filtration Recommended: Tap water in ZIP code 11211 (Brooklyn, NY) has compliance concerns, earning an EPA Safety Grade of C (57/100) due to 19 health violation(s) and 6.1 ppb lead. While treated by New York City System, residents are advised to use an NSF/ANSI 53 certified water filter for drinking and cooking.

Safety Score
C

Water Safety Grade

Fair — Some compliance concerns

Health Violations

19

Total Violations

35

Lead Risk

High

Contaminants

3

⚠

Active Water Quality Issues Detected

EPA records show 23 unresolved violations. Contact New York City System for current status.

About Tap Water in ZIP Code 11211

Tap water in ZIP code 11211 (Brooklyn, NY) is distributed by New York City System (EPA ID: NY7003493), serving approximately 8,271,000 residents. Based on EPA Safe Drinking Water Act compliance records, this system receives a water safety grade of C with a composite quality score of 57/100.

Water System

New York City System

EPA ID: NY7003493

Water Source

Surface Water

Population Served

8,271,000 residents

County

Kings County County, New York

🧪

Lead Levels in ZIP 11211

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Level: 6.1 ppb — Moderate

The 90th percentile lead level in 11211 is 6.1 ppb. This is below the EPA action level of 15 ppb, but above ideal health goals. Consider a certified lead-reducing filter.

Lead exposure risk in 11211 is rated High. EPA models estimate a 66% exposure probability based on housing and infrastructure age.

Lead Level (90th percentile)
6.10 ppb (0.0061 mg/L)
Copper Level (90th percentile)

EPA action level: 1.3 mg/L

2.05 mg/L
Lead Exposure Risk Rating
High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

66%
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
🪨

Water Hardness & Mineral Content

Grains per gallon (GPG) & Parts per million (PPM / mg/L)

Classification: Soft3.2 GPG · 54 mg/L

Water in ZIP 11211 is classified as Soft (54 mg/L / 3.2 GPG). Soft water produces abundant soap lather, prevents scale buildup in water heaters, and does not leave spots on dishes.

Recommendation: No water softener is needed. Standard carbon filtration is sufficient for taste and chlorine reduction.
Hardness (GPG)

Grains per gallon

3.2 GPG
Hardness (PPM / mg/L)

Parts per million CaCO3

54 mg/L
Appliance Scaling Risk
Very Low

Interactive Water Safety & Filter Matcher

Personalized for ZIP 11211 (Brooklyn, NY)

Free Tool

Official EPA SDWIS Database Entry

Utility: New York City System · PWSID: NY7003493

Verify on EPA.gov
📋

Violation History

Past 5 years — EPA SDWIS data

New York City System has recorded 19 health-based violations out of 35 total violations over the past 5 years. 23 violations remain unresolved in EPA tracking records.

Total Violations (5 yr)
35
Health-Based Violations
19
Unresolved Violations
23
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk for this utility is rated Critical based on past reporting and enforcement records.

⚗️

Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 3 contaminants with health-based violations in the past 5 years: Contaminant 2806, Consumer Confidence Report Rule, Chloroform.

Contaminant 2806Consumer Confidence Report RuleChloroform

⚖ Enforcement Actions

EPA or state regulators have issued 10 enforcement actions to address compliance lapses.
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Water Source & Environmental Factors

Surface Water

This system draws water from lakes, rivers, or reservoirs. Surface water is treated to remove sediment, microorganisms, and chemical contaminants before reaching taps.

Water Source Type
Surface Water
EPA Radon Zone

Lower potential

Zone 3
Annual Flood Risk Cost

Estimated annual flood-related costs per property

$5
Energy Burden

% of household income spent on energy — indicator of older infrastructure

2.73%

EPA Radon Zone 3 — lower radon potential, though the EPA still recommends testing all homes.

Water Quality Testing in ZIP 11211

Tap Water & Well Testing Recommendations

Residents in ZIP code 11211 served by New York City System can test tap water or private well systems to verify water purity. Testing detects hidden contaminants before they impact family health.

Tap Water Testing Steps

  • 1.Conduct a certified lead check if your home was constructed before 1986.
  • 2.Use certified lab testing kits rather than uncalibrated test strips for regulated compliance.
  • 3.Sample water from both your kitchen faucet and water heater to compare line purity.

Private Well Testing Steps

  • •Test for Coliform bacteria and Nitrates annually.
  • •Test for heavy metals, radon, and PFAS every 3 years.
  • •Send samples to a state-certified drinking water laboratory recognized by New York State Department of Health.
Certified Lab Testing: Always use an EPA-certified drinking water laboratory in NY for formal legal or real estate compliance testing.

🛡 What Should You Do? — ZIP 11211 Recommendations

  • ⚠ Use a certified NSF/ANSI 53 filter for drinking and cooking water if you have young children
  • ⚠ Never give unfiltered tap water to infants in formula — use certified bottled or filtered water
  • ⚠ Request a copy of the Consumer Confidence Report to see what was detected and when
  • ⚠ Call the EPA Safe Drinking Water Hotline: 1-800-426-4791

Recommended Water Treatment Systems:

🏺

NSF 53 Lead Pitcher Filter

Specifically certified to reduce lead and copper at the tap.

Lead Filter Guide →
⚗️

NSF 58 Under-Sink RO System

Advanced filtration for PFAS, fluoride, nitrates, and organic chemicals.

RO System Guide →

Frequently Asked Questions — ZIP 11211 Water Quality

Is tap water safe to drink in ZIP code 11211?+
Tap water in 11211 (Brooklyn, NY) meets major standards but has a grade of C due to minor past violations. Vulnerable populations may want to use a certified filter as a precaution.
How do I get my water tested in ZIP 11211 (Brooklyn, NY)?+
To test water quality in ZIP 11211, you can order a certified drinking water test kit or send water samples to an EPA/NELAP certified laboratory in NY. Certified testing checks for lead, coliform bacteria, nitrates, hardness, and PFAS that standard test strips miss. Contact New York State Department of Health for a list of certified regional labs.
How hard is the tap water in 11211?+
Tap water in 11211 is classified as Soft with an estimated mineral hardness of 54 mg/L (3.2 GPG). No water softener is needed. Standard carbon filtration is sufficient for taste and chlorine reduction.
Should I test private well water in 11211?+
Yes. Unlike municipal systems, private wells in 11211 are not regulated by the EPA or local utilities. Private well owners should test their water annually for coliform bacteria and nitrates, and every 3 to 5 years for heavy metals (lead, arsenic) and volatile organic compounds.
What is the lead level in 11211 tap water?+
The 90th percentile lead level in 11211 is 6.1 ppb. The EPA action level is 15 ppb. This is below the EPA action level.
Is there an active boil water notice in 11211?+
There are currently no active boil water advisories on record for 11211. Water treatment systems are operating within normal parameters.
Who provides tap water to 11211?+
Tap water in ZIP code 11211 is provided by New York City System (EPA ID: NY7003493), serving approximately 8,271,000 residents.
What water filter should I use in 11211?+
Based on water metrics for 11211, we recommend Reverse Osmosis (PFAS & Lead). Look for certifications such as NSF/ANSI 58 (Reverse Osmosis), NSF/ANSI 53 (Lead & VOCs), NSF/ANSI P473 (PFAS/PFOS).

Data Sources & Methodology

Water quality data for ZIP code 11211 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by New York City System. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →