How does Kings Bridge's water compare to the national average?

The USA national average is 151 mg/L. Kings Bridge (≈ 180+ mg/L) is 189 mg/L harder than average.

Kings Bridge Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

reservoir

pH Level

8.1

neutral = 7.0

Lead

0.008 mg/L

✓ Below action level

TDS

402.6 mg/L

Est. Daily Cost

$0.91

energy & soap waste

Source: See methodology section below · Updated 2026

very hard180+ mg/LVery Hard · est.

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 Kings Bridge, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Kings Bridge	Soft Water City	Efficiency Loss
Kettle	4.7 yrs	8.5 yrs	-45%
Washing Machine	6.6 yrs	12 yrs	-45%
Water Heater	8.3 yrs	15 yrs	-45%

Regional Water Comparison

How Kings Bridge compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Kings Bridge, New York	≈ 180+ mg/L	7.7 ppt	🔴 Very Hard	reservoir
Spuyten Duyvil, New York	≈ 120–179 mg/L	3.2 ppt	🟠 Hard	reservoir
University Heights, New York	≈ 120–179 mg/L	3.2 ppt	🟠 Hard	reservoir
Fordham, New York	≈ 120–179 mg/L	6.2 ppt	🟠 Hard	reservoir
Inwood, New York	≈ 120–179 mg/L	5.3 ppt	🟠 Hard	reservoir

National Benchmark

How Kings Bridge compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Kings Bridge	≈ 180+ mg/L	🔴 High
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Kings Bridge's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 402.6 mg/LpH: 8.1

The New York City Department of Environmental Protection (DEP) supplies water to Kings Bridge in Bronx County, serving over 8 million residents in the five boroughs plus Westchester suburbs. Primary sources are the Catskill/Delaware Systems — providing approximately 90% of supply (1.4 billion gallons/day from 19 reservoirs) — and the Croton System (7 reservoirs, roughly 10%), with minor groundwater. Water enters via Hillview Reservoir in Westchester, treated at plants including the Croton facility in the Bronx and Hillview booster stations. Kings Bridge receives blended surface water via aqueducts and tunnels; there are no local wells serving this neighborhood.

The 2,000-square-mile NYC watershed spans the Catskill Mountains to the Hudson Highlands, underlain by ancient metamorphic and sedimentary rocks from Ordovician to Devonian periods — including the Shawangunk Conglomerate and Marcellus Shale. Glacial scouring created shallow soils over fractured bedrock, promoting rapid infiltration and minimal mineral leaching into reservoirs, yielding a generally soft supply. Bronx geology includes Fordham Gneiss (Proterozoic) and Inwood Marble (Cambrian), but the supply relies on protected upstate surface water rather than local aquifers, resulting in moderately mineralised character.

The water supply can reach very hard levels in parts of the distribution system, causing heavy limescale buildup on fixtures, kettles, and pipes, and reducing efficiency in water heaters, dishwashers, and washing machines by up to 20–30%. Dry skin, dull hair, and soap scum are common; coffee may taste flat due to excess minerals. Monthly vinegar descaling and annual heater flushes are recommended; a water softener is strongly recommended at very hard levels. NYC water pH is 6.8–7.2; lead/copper standards are met via orthopolyphosphate corrosion control. PFAS levels are below NY limits; turbidity is low (<0.3 NTU); disinfection uses chloramine (2–4 ppm) with UV treatment at the Delaware Aqueduct.

Geology & Source: NYC upstate watersheds — Devonian shales, sandstones, Shawangunk Conglomerate, Marcellus Shale; Proterozoic Fordham Gneiss and Inwood Marble in Bronx; glacial scouring limits mineral leaching — moderately mineralised blended surface supply

Other New York Water Reports

Spuyten Duyvil

≈ 120–179 mg/L

🟠 Hard

University Heights

≈ 120–179 mg/L

🟠 Hard

Fordham

≈ 120–179 mg/L

🟠 Hard

Inwood

≈ 120–179 mg/L

🟠 Hard

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Frequently Asked Questions

Is Kings Bridge's water safe to drink?

Yes. Kings Bridge's water meets all federal safety standards. The hardness is ≈ 180+ mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Kings Bridge?

At ≈ 180+ mg/L (Very Hard), Kings Bridge's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 45%.

How does Kings Bridge compare to the USA average?

The USA national average is 151 mg/L. Kings Bridge (≈ 180+ mg/L) is 189 mg/L above the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Kings Bridge is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

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.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

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.

Measured

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.

Modelled

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.

Calculated

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.