How does Hammonton's water compare to the national average?

The USA national average is 151 mg/L. Hammonton (≈ 120–179 mg/L) is 1 mg/L softer than average.

Hammonton Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

5.9

neutral = 7.0

Lead

0.001 mg/L

✓ Below action level

TDS

56 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · 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 Hammonton, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Hammonton	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 Hammonton compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Hammonton, New Jersey	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
Jackson, New Jersey	85.33 mg/L	0 ppt	🟡 Moderately Hard	groundwater
Atco, New Jersey	≈ 120–179 mg/L	8.5 ppt	🟠 Hard	groundwater
Sicklerville, New Jersey	≈ 120–179 mg/L	11.8 ppt	🟠 Hard	groundwater
Williamstown, New Jersey	≈ 120–179 mg/L	19.6 ppt	🟠 Hard	reservoir

National Benchmark

How Hammonton compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Hammonton	≈ 120–179 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

Bring Scarsdale-quality water to your Hammonton home

Shop water softeners on Amazon.com →

Shop Now

What Makes Hammonton's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 56 mg/LpH: 5.9

The Hammonton Water Department provides drinking water to the residents of Hammonton, New Jersey. This municipal utility draws its supply exclusively from groundwater sources. Specifically, the water originates from wells tapping into the Kirkwood-Cohansey aquifer system, a significant underground water source managed and distributed by the department. Standard treatment processes are employed to ensure the water meets federal safety standards before reaching homes and businesses.

The Kirkwood-Cohansey aquifer system is a geological formation dating back to the Cretaceous period. It consists mainly of sand and gravel layers found beneath Atlantic County. This sedimentary geology naturally contains dissolved minerals, particularly calcium and magnesium, which are absorbed by the water as it flows through the underground deposits. This natural mineralization process is what gives the Hammonton water supply its characteristic hardness.

Homeowners may notice the effects of this hard water in their daily lives. Scale buildup is common in appliances like coffee makers, kettles, and particularly water heaters. You might also find that soaps and detergents don't lather as well, requiring you to use more. Over time, mineral deposits can reduce the efficiency of appliances such as dishwashers and washing machines, potentially shortening their lifespan. Installing a water softener is often recommended to combat these issues and protect your plumbing. Residents should check the Hammonton Water Department's latest Consumer Confidence Report for detailed information on specific contaminants like nitrate and aluminum.

Geology & Source: Kirkwood-Cohansey aquifer system; sand and gravel deposits yield hard water

Other New Jersey Water Reports

Jackson

85.33 mg/L

🟡 Moderately Hard

Atco

≈ 120–179 mg/L

🟠 Hard

Sicklerville

≈ 120–179 mg/L

🟠 Hard

Williamstown

≈ 120–179 mg/L

🟠 Hard

Report an Issue

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 Hammonton's water safe to drink?

Yes. Hammonton's water meets all federal safety standards. The hardness is ≈ 120–179 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 Hammonton?

At ≈ 120–179 mg/L (Hard), Hammonton'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 20%.

How does Hammonton compare to the USA average?

The USA national average is 151 mg/L. Hammonton (≈ 120–179 mg/L) is 1 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 Hammonton 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.