College Point Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
reservoir
pH Level
8.2
neutral = 7.0
Lead
0.008 mg/L
✓ Below action level
TDS
436.8 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In College Point, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In College Point | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How College Point compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ College Point, New York | ≈ 120–179 mg/L | 8.1 ppt | 🟠 Hard | reservoir |
| Whitestone, New York | 174.5 mg/L | 8.3 ppt | 🟠 Hard | reservoir |
| East Elmhurst, New York | ≈ 120–179 mg/L | 8 ppt | 🟠 Hard | reservoir |
| Unionport, New York | ≈ 120–179 mg/L | 3.2 ppt | 🟠 Hard | reservoir |
| Corona, New York | 74.5 mg/L | 3.7 ppt | 🟡 Moderately Hard | reservoir |
National Benchmark
How College Point compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ College Point | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes College Point's Water Unique?
Local geology and source profile
College Point, Queens, receives its water from the New York City Department of Environmental Protection (DEP), which serves over 8 million residents across the five boroughs and parts of Westchester County. The primary sources are the Catskill/Delaware and Croton reservoir systems in upstate New York, drawing from 19 reservoirs and 3 controlled lakes spanning Ulster, Greene, Delaware, Putnam, and Westchester counties. Treatment occurs at the Catskill, Delaware, and Croton systems, with filtration at facilities including the Croton and Hillview plants, disinfection with chloramine, and UV treatment for Giardia and Cryptosporidium control, before distribution through extensive aqueducts.
The NYC water supply draws from the Catskill/Delaware Watershed (90% of supply) and Croton Watershed (10%), encompassing 1,600 square miles of forested uplands. Geology features Paleozoic sedimentary rocks including the Devonian Catskill Formation sandstones and shales, Silurian Rondout limestone, and schists, imparting a moderately mineralized character through gradual calcium- and magnesium-bearing mineral dissolution. Glacial deposits overlay fractured bedrock, moderating ion concentrations and resulting in water that is not aggressively hard but carries noticeable mineral content affecting taste and soap efficiency.
As moderately hard water, College Point's supply causes moderate scale buildup in appliances like water heaters, dishwashers, and coffee makers, reducing efficiency over time and increasing energy costs. Showers may leave soap scum on skin and hair, while laundry detergents perform less effectively. Regular descaling with vinegar and using high-efficiency detergents help mitigate these effects; a water softener is often recommended for households with noticeable spotting on glassware or dry skin. NYC DEP water meets all EPA standards with pH 7.0–8.0; lead levels comply citywide, PFAS measures below 4 ppt, and no violations for microbes or disinfection are reported.
Geology & Source: NYC Catskill/Delaware and Croton watersheds — Paleozoic Devonian Catskill Formation sandstones, shales, and Silurian Rondout limestone; glacial till overlying fractured bedrock; gradual mineral leaching yields moderately mineralized supply
Other New York Water Reports
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Frequently Asked Questions
Is College Point's water safe to drink?
Do I need a water softener in College Point?
How does College Point compare to the USA average?
Data Sources & Methodology
Water quality data for College Point is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.