Mount Greenwood Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

river

pH Level

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

326.3 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 Mount Greenwood, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Mount Greenwood	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 Mount Greenwood compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Mount Greenwood, Illinois	≈ 120–179 mg/L	5.9 ppt	🟠 Hard	river
Evergreen Park, Illinois	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Alsip, Illinois	≈ 180+ mg/L	0 ppt	🔴 Very Hard	river
Morgan Park, Illinois	≈ 180+ mg/L	5.4 ppt	🔴 Very Hard	river
Ashburn, Illinois	≈ 120–179 mg/L	9.4 ppt	🟠 Hard	groundwater

National Benchmark

How Mount Greenwood compares to the USA average

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

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What Makes Mount Greenwood's Water Unique?

Local geology and source profile

Source: RiverTDS: 326.3 mg/LpH: 8

Mount Greenwood is a neighborhood in Cook County, Illinois, served by the City of Chicago Department of Water Management. The city draws its supply from Lake Michigan, which receives drainage from the Great Lakes basin. Official Chicago water quality reports, EPA SDWIS data, and utility documentation specific to Mount Greenwood were not available in the sources reviewed; for complete and current water quality information, consulting the Chicago Department of Water Management's Consumer Confidence Report or EPA water system data directly is recommended.

Lake Michigan receives drainage from the Great Lakes basin, where the underlying geology includes Silurian Niagara Dolomite and calcareous Pleistocene glacial till. These carbonate formations — the Niagara Dolomite in particular — dissolve calcium and magnesium ions into drainage waters, contributing to a moderately hard water character in the Lake Michigan supply. This geology is typical of the Great Lakes basin's carbonate-dominated bedrock, which imparts measurable mineral content to the water received throughout Cook County.

Moderately hard water from Lake Michigan leads to scale buildup in water heaters, dishwashers, washing machines, and on fixtures and faucets over time. White mineral deposits on glassware and reduced soap lather are common indicators. Regular descaling maintenance is advisable, and a water softener may benefit households sensitive to mineral buildup. For full water quality data — including pH, lead, copper, and PFAS levels — consult the Chicago Department of Water Management's annual Consumer Confidence Report.

Geology & Source: City of Chicago Water Division draws from Lake Michigan; Silurian Niagara Dolomite and calcareous Pleistocene glacial till in Great Lakes basin — carbonate drainage produces moderately hard water

Other Illinois Water Reports

Evergreen Park

≈ 120–179 mg/L

🟠 Hard

Alsip

≈ 180+ mg/L

🔴 Very Hard

Morgan Park

≈ 180+ mg/L

🔴 Very Hard

Ashburn

≈ 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 Mount Greenwood's water safe to drink?

Yes. Mount Greenwood'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 Mount Greenwood?

At ≈ 120–179 mg/L (Hard), Mount Greenwood'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 Mount Greenwood compare to the USA average?

The USA national average is 151 mg/L. Mount Greenwood (≈ 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 Mount Greenwood 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.