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Water Hardness in Brewster, NY

New York · 1 zip codes · 18 matched water systems

213 PPM
12.5 GPG
Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 202618 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 18 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
18 USGS-backed sources
18 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

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 Brewster

These systems are matched to Brewster, NY. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

18 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Buchanan Village
NY5903422
Slightly Hard
69 PPMsurface water2,200 servedHigh Confidence — USGS Monitoring
Brewster Village
NY3903639
Very Hard
294 PPMgroundwater2,162 servedHigh Confidence — USGS Monitoring
Brewster Heights
NY3905680
Slightly Hard
69 PPMsurface water1,350 servedHigh Confidence — USGS Monitoring
Dover Plains Water Co
NY1302761
Very Hard
294 PPMgroundwater800 servedHigh Confidence — USGS Monitoring
Green Chimneys: Main Well
NY3921720
Very Hard
294 PPMgroundwater500 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Brewster, NY

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Brewster, NY.

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Frequently Asked Questions

How hard is the water in Brewster, NY?

The citywide weighted average water hardness in Brewster, NY is 213 PPM (12.5 GPG), classified as hard. This is based on 18 matched water systems.

Do I need a water softener in Brewster, NY?

With a citywide average hardness of 213 PPM, a water softener is recommended for homes in Brewster. Confirm your tap reading before sizing equipment.

Is hard water in Brewster, 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 Brewster, NY?

Brewster, New York is served by 18 matched water systems across 1 zip code.

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