How does Elmwood Park's water compare to the national average?

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

Elmwood Park Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

river

pH Level

8.5

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

592.1 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 Elmwood Park, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Elmwood Park	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 Elmwood Park compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Elmwood Park, Illinois	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
River Forest, Illinois	137.5 mg/L	0 ppt	🟠 Hard	river
River Grove, Illinois	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Forest Park, Illinois	≈ 180+ mg/L	0 ppt	🔴 Very Hard	river
Belmont Cragin, Illinois	≈ 120–179 mg/L	5 ppt	🟠 Hard	river

National Benchmark

How Elmwood Park compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Elmwood Park	≈ 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 Elmwood Park's Water Unique?

Local geology and source profile

Source: RiverTDS: 592.1 mg/LpH: 8.5

Elmwood Park Water System serves the village of Elmwood Park in Cook County, Illinois, a suburb northwest of Chicago with approximately 25,000 residents. Water is sourced primarily from Lake Michigan via the City of Chicago's water system, supplemented by local groundwater wells tapping glacial drift aquifers. Treatment occurs at Chicago's Jardine Water Purification Plant, with local distribution and chlorination managed by Elmwood Park's public works department under Illinois EPA oversight.

The primary watershed is Lake Michigan, part of the Great Lakes basin, with glacial origins that limit mineral pickup in surface flow. Local groundwater originates from the shallow glacial aquifer system, underlain by Silurian-age dolomite and limestone bedrock of the Racine and Waukegan Formations — part of the Niagaran Series. These carbonate rocks contribute dissolved calcium and magnesium, yielding a harder character from the groundwater component, while Lake Michigan provides a softer blend, creating a moderately hard mixed supply.

Hard water causes scale buildup in hot water heaters, dishwashers, boilers, and washing machines, reducing efficiency and increasing energy costs. Faucet aerators and showerheads clog from mineral deposits. Monthly vinegar descaling of fixtures, annual heater flushing, and scale-inhibiting filters are recommended; a water softener is advised to protect plumbing. pH typically ranges 7.5–8.5 from Lake Michigan treatment; 11 contaminants exceed health guidelines per third-party sources, though no MCL violations are recorded. Lead and copper levels comply via corrosion control, and PFAS presence is noted without specific exceedances.

Geology & Source: Lake Michigan glacial source blended with groundwater from Silurian Niagaran dolomite and limestone (Racine and Waukegan Formations) — carbonate groundwater component elevates hardness in the mixed supply

Other Illinois Water Reports

River Forest

137.5 mg/L

🟠 Hard

River Grove

≈ 120–179 mg/L

🟠 Hard

Forest Park

≈ 180+ mg/L

🔴 Very Hard

Belmont Cragin

≈ 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 Elmwood Park's water safe to drink?

Yes. Elmwood Park'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 Elmwood Park?

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

The USA national average is 151 mg/L. Elmwood Park (≈ 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 Elmwood Park 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.