How does New Berlin's water compare to the national average?

The USA national average is 151 mg/L. New Berlin (136.96 mg/L) is 14 mg/L softer than average.

New Berlin Water Hardness & Quality Report (2026)

Water Hardness

136.96mg/L

Hard

8 grains per gallon

Source

reservoir

pH Level

8.1

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

473.6 mg/L

Est. Daily Cost

$0.37

energy & soap waste

Source: See methodology section below · Updated 2026

136.96mg/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 New Berlin, your appliances are currently losing 18% efficiency due to mineral buildup.

Appliance	In New Berlin	Soft Water City	Efficiency Loss
Kettle	5.1 yrs	8.5 yrs	-40%
Washing Machine	8.5 yrs	12 yrs	-29%
Water Heater	10.1 yrs	15 yrs	-33%

Regional Water Comparison

How New Berlin compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ New Berlin, Wisconsin	136.96 mg/L	0 ppt	🟠 Hard	reservoir
Muskego, Wisconsin	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
Brookfield, Wisconsin	≈ 180+ mg/L	47.4 ppt	🔴 Very Hard	groundwater
Greenfield, Wisconsin	≈ 180+ mg/L	6.5 ppt	🔴 Very Hard	groundwater
West Allis, Wisconsin	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir

National Benchmark

How New Berlin compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ New Berlin	136.96 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes New Berlin's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 473.6 mg/LpH: 8.1

The New Berlin Water Utility serves approximately 27,899–28,217 residents across New Berlin, Wisconsin (Milwaukee County). Historically, the utility operated deep municipal wells drawing from local aquifers; since July 2009, the system has transitioned to purchasing treated surface water from Milwaukee, supplemented by continued groundwater sources. In some neighborhoods, Oak Creek Water Utility also provides distribution services. The utility's main office is at 3805 South Casper Drive, New Berlin, WI 53151 (phone: 262-786-7086 or 262-786-8610).

New Berlin's water originates from Paleozoic-age dolomite and limestone aquifers characteristic of southeastern Wisconsin's geology, blended with Lake Michigan surface water purchased from Milwaukee. The local groundwater historically contained elevated levels of naturally occurring minerals including radium, strontium, and manganese — typical of carbonate bedrock formations in the region. The transition to Milwaukee's Lake Michigan source has reduced overall hardness, though the supply remains moderate to hard due to residual groundwater contributions and the mineral content of the purchased surface water.

New Berlin's water is classified as moderately hard, with calcium and magnesium deposits accumulating on fixtures, dishware, and inside water heaters and pipes. With the shift to Milwaukee's softer purchased water, many residents have found that bypassing or reducing water softener regeneration cycles saves money and salt; however, periodic water heater flushing to remove sediment is still advisable. The utility has tested 61+ contaminants, with 3 exceeding EPA health-based guidelines, including hexavalent chromium (0.22 ppb), chloroform (6.7 ppb), bromodichloromethane (1.9 ppb), dibromochloromethane (2.1 ppb), vanadium (0.3 ppb), and strontium (770 ppb); radium levels in groundwater exceed health guidelines and are linked to increased cancer risk. Current Consumer Confidence Reports are available on the city's official website.

Geology & Source: Paleozoic dolomite and limestone aquifers in southeastern Wisconsin — naturally elevated radium, strontium, and manganese; deep well water hard; since July 2009, blended with softer Lake Michigan surface water purchased from Milwaukee

Other Wisconsin Water Reports

Muskego

≈ 180+ mg/L

🔴 Very Hard

Brookfield

≈ 180+ mg/L

🔴 Very Hard

Greenfield

≈ 180+ mg/L

🔴 Very Hard

West Allis

≈ 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 New Berlin's water safe to drink?

Yes. New Berlin's water meets all federal safety standards. The hardness is 136.96 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 New Berlin?

At 136.96 mg/L (Hard), New Berlin'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 18%.

How does New Berlin compare to the USA average?

The USA national average is 151 mg/L. New Berlin (136.96 mg/L) is 14 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 New Berlin 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.