How does Cedar Grove's water compare to the national average?

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

Cedar Grove Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.7

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

761 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 Cedar Grove, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Cedar Grove	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 Cedar Grove compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Cedar Grove, New Jersey	≈ 120–179 mg/L	27.8 ppt	🟠 Hard	reservoir
Verona, New Jersey	≈ 120–179 mg/L	93.7 ppt	🟠 Hard	reservoir
Little Falls, New Jersey	≈ 120–179 mg/L	13 ppt	🟠 Hard	reservoir
Upper Montclair, New Jersey	≈ 120–179 mg/L	13.1 ppt	🟠 Hard	reservoir
Montclair, New Jersey	≈ 180+ mg/L	7.2 ppt	🔴 Very Hard	reservoir

National Benchmark

How Cedar Grove compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Cedar Grove	≈ 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 Cedar Grove's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 761 mg/LpH: 7.7

The Cedar Grove Water Department supplies water to about 13,616 residents in Cedar Grove Township, Essex County, New Jersey. The utility purchases treated surface water, primarily sourced from reservoirs managed by regional providers within the Passaic River watershed. While specific treatment plants aren't named, the water undergoes standard municipal processing. Its journey begins in reservoirs located in the Watchung Mountains and Highlands physiographic provinces, eventually reaching homes after disinfection and filtration.

Beneath the surface, Cedar Grove's water flows through Paleozoic sedimentary rocks, including shales, sandstones, and limestones. These rock types, particularly the carbonate-rich ones like those found in the Kittatinny Valley and Highlands, naturally dissolve alkaline earth metals such as calcium and magnesium. This prolonged mineral leaching, especially from limestone and dolomite strata in the region's karst-influenced terrain, gives the water its distinct hard character, a common trait in northern New Jersey's Appalachian fold belt.

Homeowners might notice scale buildup on faucets and showerheads, along with spots on dishes after washing. Appliances like water heaters, dishwashers, and coffee makers can become less efficient and suffer shortened lifespans due to mineral deposits. To combat this, regular descaling with vinegar or installing a water softener is often recommended to protect plumbing and ensure optimal appliance performance. Residents can also check the utility's Consumer Confidence Report for more detailed water quality information.

Geology & Source: Paleozoic sedimentary rocks; limestone and dolomite formations leach calcium and magnesium, producing hard water

Other New Jersey Water Reports

Verona

≈ 120–179 mg/L

🟠 Hard

Little Falls

≈ 120–179 mg/L

🟠 Hard

Upper Montclair

≈ 120–179 mg/L

🟠 Hard

Montclair

≈ 180+ mg/L

🔴 Very 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 Cedar Grove's water safe to drink?

Yes. Cedar Grove'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 Cedar Grove?

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

The USA national average is 151 mg/L. Cedar Grove (≈ 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 Cedar Grove 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.