East Brunswick Water Hardness & Quality Report (2026)

Water Hardness

soft

~0–59 mg/L

Soft

estimated · not lab-verified

Source

reservoir

pH Level

5.7

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

170 mg/L

Est. Daily Cost

$0.08

energy & soap waste

Source: See methodology section below · Updated 2026

soft~0–59 mg/LSoft · 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 East Brunswick, your appliances are currently losing 4% efficiency due to mineral buildup.

Appliance	In East Brunswick	Soft Water City	Efficiency Loss
Kettle	8.2 yrs	8.5 yrs	-4%
Washing Machine	11.5 yrs	12 yrs	-4%
Water Heater	14.4 yrs	15 yrs	-4%

Regional Water Comparison

How East Brunswick compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ East Brunswick, New Jersey	≈ 0–59 mg/L	6 ppt	🟢 Soft	reservoir
South River, New Jersey	≈ 120–179 mg/L	43.2 ppt	🟠 Hard	reservoir
Old Bridge, New Jersey	124 mg/L	46.9 ppt	🟠 Hard	reservoir
Sayreville, New Jersey	≈ 120–179 mg/L	33.8 ppt	🟠 Hard	mixed
South Old Bridge, New Jersey	≈ 120–179 mg/L	10.2 ppt	🟠 Hard	reservoir

National Benchmark

How East Brunswick compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ East Brunswick	≈ 0–59 mg/L	🟢 None
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes East Brunswick's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 170 mg/LpH: 5.7

East Brunswick Water Utility serves East Brunswick Township in Middlesex County, New Jersey, providing drinking water to approximately 48,884 residents. The utility purchases treated surface water primarily from the New Jersey Water Supply Authority and Middlesex Water Company. Key sources include the Spruce Run Reservoir, Round Valley Reservoir in Hunterdon County, and the Delaware and Raritan Canal system. Water is delivered via infrastructure managed from 25 Harts Lane, East Brunswick, NJ 08816, with contact at 732-390-6824.

The watershed encompasses the upper Raritan River basin and canal systems, with reservoirs impounding streams draining Triassic sedimentary formations of the Brunswick Group — shales, sandstones, and conglomerates — interspersed with Jurassic diabase sills. No significant karst or limestone aquifers contribute, resulting in very soft water from minimal mineral leaching. The NJ Piedmont geology favors low dissolved solids, with surface runoff dominating water chemistry over subsurface flow through mineralized rock.

As soft water, East Brunswick's supply leaves minimal scale buildup in pipes, heaters, and appliances, reducing maintenance needs for descaling dishwashers, washing machines, and water heaters. Soap and detergent efficiency is high, producing ample lather without excess use. No water softener is recommended; instead, monitor for corrosion risks in older plumbing due to low mineral buffering. The 2022 Consumer Confidence Report notes haloacetic acids (HAA5) at 46.75 ppb (below the 60 ppb MCL). PFAS testing in Q2 2023 showed PFOA exceeding some guidelines, being addressed by a new treatment plant; the supply is overall compliant with state and federal standards.

Geology & Source: NJ Piedmont — Triassic Brunswick Group shales, sandstones, conglomerates with Jurassic diabase intrusions; Spruce Run and Round Valley Reservoirs; soft supply due to minimal carbonate contact — low calcium and magnesium

Other New Jersey Water Reports

South River

≈ 120–179 mg/L

🟠 Hard

Old Bridge

124 mg/L

🟠 Hard

Sayreville

≈ 120–179 mg/L

🟠 Hard

South Old Bridge

≈ 120–179 mg/L

🟠 Hard

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Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is East Brunswick's water safe to drink?

Yes. East Brunswick's water meets all federal safety standards. The hardness is ≈ 0–59 mg/L (Soft), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in East Brunswick?

East Brunswick's water is soft at ≈ 0–59 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does East Brunswick compare to the USA average?

The USA national average is 151 mg/L. East Brunswick (≈ 0–59 mg/L) is 121 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for East Brunswick 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.