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

The USA national average is 151 mg/L. Old Bridge (124 mg/L) is 27 mg/L softer than average.

Old Bridge Water Hardness & Quality Report (2026)

Water Hardness

124mg/L

Hard

7.2 grains per gallon

Source

reservoir

pH Level

7.9

neutral = 7.0

Lead

0.006 mg/L

✓ Below action level

TDS

274.2 mg/L

Est. Daily Cost

$0.33

energy & soap waste

Source: See methodology section below · Updated 2026

124mg/L as CaCO₃Hard

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 Old Bridge, your appliances are currently losing 17% efficiency due to mineral buildup.

Appliance	In Old Bridge	Soft Water City	Efficiency Loss
Kettle	7.1 yrs	8.5 yrs	-16%
Washing Machine	10 yrs	12 yrs	-17%
Water Heater	12.5 yrs	15 yrs	-17%

Regional Water Comparison

How Old Bridge compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Old Bridge, New Jersey	124 mg/L	46.9 ppt	🟠 Hard	reservoir
South Old Bridge, New Jersey	≈ 120–179 mg/L	10.2 ppt	🟠 Hard	reservoir
South River, New Jersey	≈ 120–179 mg/L	43.2 ppt	🟠 Hard	reservoir
Sayreville, New Jersey	≈ 120–179 mg/L	33.8 ppt	🟠 Hard	mixed
East Brunswick, New Jersey	≈ 0–60 mg/L	6 ppt	🟢 Soft	reservoir

National Benchmark

How Old Bridge compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Old Bridge	124 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Old Bridge's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 274.2 mg/LpH: 7.9

Old Bridge Municipal Utilities Authority (OBMUA) serves Old Bridge Township in Middlesex County, New Jersey. The utility operates as a surface water system, purchasing treated surface water rather than operating its own treatment plants. OBMUA's service area encompasses Old Bridge and surrounding communities, with water delivered through a conventional distribution network. The utility's main contact is (732) 679-4187, and administrative offices are located at 15 Throckmorton Lane, Old Bridge, NJ 08857. The 2026 water quality assessment reports a score of 80/100 with no EPA violations and zero contaminants above health guidelines.

The Old Bridge service area is situated within New Jersey's coastal plain watershed, underlain by Cretaceous and Tertiary sedimentary deposits. The region's geology consists primarily of sand, silt, and clay formations from the Raritan and Magothy aquifer systems. Because OBMUA purchases surface water rather than drawing from local groundwater, the water chemistry reflects the source utility's treatment and regional surface water characteristics, with the coastal plain geology contributing moderate mineral content to the supply.

OBMUA employs conventional treatment methods including hypochlorite disinfection to ensure water safety. As a surface water system, the utility must comply with Surface Water Treatment Rule requirements. Residents should monitor their Consumer Confidence Report for any specific hardness concerns and consider point-of-use treatment if scale buildup occurs on fixtures or appliances. The annual Consumer Confidence Report provides detailed water quality data and is available upon request or through the OBMUA website; residents may also contact the New Jersey Drinking Water Hotline at 1-800-426-4791 for specific water quality questions.

Geology & Source: New Jersey coastal plain — Cretaceous and Tertiary sedimentary deposits including Raritan and Magothy aquifer systems; sand, silt, and clay formations contribute moderate mineral content typical of Atlantic coastal geology

Other New Jersey Water Reports

South Old Bridge

≈ 120–179 mg/L

🟠 Hard

South River

≈ 120–179 mg/L

🟠 Hard

Sayreville

≈ 120–179 mg/L

🟠 Hard

East Brunswick

≈ 0–60 mg/L

🟢 Soft

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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 Old Bridge's water safe to drink?

Yes. Old Bridge's water meets all federal safety standards. The hardness is 124 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Old Bridge?

At 124 mg/L (Hard), Old 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 17%.

How does Old Bridge compare to the USA average?

The USA national average is 151 mg/L. Old Bridge (124 mg/L) is 27 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 Old 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.