Water Hardness in Brooklyn, NY
New York · 37 zip codes · 13 matched water systems
City avg (weighted): 65 PPM
Dataset updated March 9, 202613 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology
How this city reading is built
This city reading is a weighted rollup across 13 matched water systems and 37 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.
Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.
Water Systems in Brooklyn
These systems are matched to Brooklyn, NY. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
New York City System NY7003493 | surface water | 65 PPM Slightly HardUSGS estimate: 186 PPM | |
Leisure Lake Estates NY5230210 | groundwater | 411 PPM Very Hard | |
Ravenwood Estates NY4110693 | groundwater | 81 PPM Slightly Hard | |
Yeshiva Kehileth Yakov NY5920450 | groundwater | 411 PPM Very Hard | |
Sunset Trailer Park NY5301427 | groundwater | 81 PPM Slightly Hard |
Zip Codes in Brooklyn, NY
What This Means For You
Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.
Slightly Hard Water
Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.
Recommended Products
Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | How to Test Your Water
Know your water hardness?
If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Brooklyn, NY.
Frequently Asked Questions
How hard is the water in Brooklyn, NY?
The citywide weighted average water hardness in Brooklyn, NY is 65 PPM (3.8 GPG), classified as slightly hard. This is based on 13 matched water systems.
Do I need a water softener in Brooklyn, NY?
At 65 PPM, the citywide average is relatively soft. A water softener is generally not necessary.
Is hard water in Brooklyn, NY safe to drink?
Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.
How many water systems serve Brooklyn, NY?
Brooklyn, New York is served by 13 matched water systems across 37 zip codes.
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