Grosse Pointe Woods Water Hardness & Quality Report (2026)

Water Hardness

82mg/L

Moderately Hard

4.8 grains per gallon

Source

river

pH Level

7.4

neutral = 7.0

Lead

0.001 mg/L

✓ Below action level

TDS

124.2 mg/L

Est. Daily Cost

$0.22

energy & soap waste

Source: See methodology section below · Updated 2026

82mg/L as CaCO₃Moderately Hard

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 Grosse Pointe Woods, your appliances are currently losing 11% efficiency due to mineral buildup.

Appliance	In Grosse Pointe Woods	Soft Water City	Efficiency Loss
Kettle	7.6 yrs	8.5 yrs	-11%
Washing Machine	10.7 yrs	12 yrs	-11%
Water Heater	13.4 yrs	15 yrs	-11%

Regional Water Comparison

How Grosse Pointe Woods compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Grosse Pointe Woods, Michigan	82 mg/L	0 ppt	🟡 Moderately Hard	river
Harper Woods, Michigan	114.5 mg/L	6.8 ppt	🟡 Moderately Hard	river
Eastpointe, Michigan	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Saint Clair Shores, Michigan	≈ 120–179 mg/L	7.2 ppt	🟠 Hard	river
Roseville, Michigan	≈ 120–179 mg/L	0 ppt	🟠 Hard	river

National Benchmark

How Grosse Pointe Woods compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Grosse Pointe Woods	82 mg/L	🟡 Low
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Grosse Pointe Woods's Water Unique?

Local geology and source profile

Source: RiverTDS: 124.2 mg/LpH: 7.4

Grosse Pointe Woods, a community in Wayne County, Michigan, receives its drinking water from the Great Lakes Water Authority (GLWA). The GLWA draws its supply from the Detroit River via the Belle Isle intake. This water then travels to one of three treatment plants—Water Works Park, Springwells, or the Northeast treatment plants—before reaching residents. The 2025 Annual Drinking Water Quality Report serves as the main source for up-to-date water quality information.

The Detroit River watershed is situated within the Great Lakes basin. This region is geologically characterized by Paleozoic-era sedimentary rock layers, specifically Devonian and Ordovician limestone and dolomite. Despite this bedrock composition, the water delivered to Grosse Pointe Woods is notably soft. This low mineral content is primarily attributed to the historical influence of soft glacial meltwaters and the naturally soft character of the Great Lakes themselves.

Because the water here is soft, you'll find less scale buildup on your faucets and appliances, and soap lathers more easily. This means your water heater, dishwasher, and washing machine may last longer and require less maintenance. While very soft water can sometimes increase the risk of plumbing corrosion, the GLWA actively manages this through careful pH adjustment and other corrosion control strategies. Residents can find detailed monitoring results and current quality data by contacting the Grosse Pointe Woods Public Works office.

Geology & Source: Paleozoic sedimentary formations; Devonian and Ordovician limestone and dolomite; low hardness due to glacial meltwater and Great Lakes influence

Other Michigan Water Reports

Harper Woods

114.5 mg/L

🟡 Moderately Hard

Eastpointe

≈ 120–179 mg/L

🟠 Hard

Saint Clair Shores

≈ 120–179 mg/L

🟠 Hard

Roseville

≈ 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 Grosse Pointe Woods's water safe to drink?

Yes. Grosse Pointe Woods's water meets all federal safety standards. The hardness is 82 mg/L (Moderately Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Grosse Pointe Woods?

Grosse Pointe Woods's water is moderately hard at 82 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Grosse Pointe Woods compare to the USA average?

The USA national average is 151 mg/L. Grosse Pointe Woods (82 mg/L) is 69 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 Grosse Pointe Woods 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.