How does West Warwick's water compare to the national average?

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

West Warwick Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.4

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

88.3 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 West Warwick, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In West Warwick	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 West Warwick compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ West Warwick, Rhode Island	≈ 120–179 mg/L	6.8 ppt	🟠 Hard	reservoir
East Greenwich, Rhode Island	≈ 60–120 mg/L	10.4 ppt	🟡 Moderately Hard	reservoir
Warwick, Rhode Island	≈ 0–60 mg/L	0 ppt	🟢 Soft	reservoir
Cranston, Rhode Island	≈ 0–60 mg/L	9.8 ppt	🟢 Soft	reservoir
Johnston, Rhode Island	≈ 0–60 mg/L	3.9 ppt	🟢 Soft	reservoir

National Benchmark

How West Warwick compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ West Warwick	≈ 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 West Warwick's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 88.3 mg/LpH: 7.4

West Warwick Water Department serves the town of West Warwick in Kent County, Rhode Island. The utility operates as a municipal water system providing service to the local community, drawing from both surface water and groundwater resources typical of the region's water infrastructure. Specific treatment plant names and detailed source information are not publicly disclosed in available sources; residents should contact the department directly for current service details.

The Narragansett Basin underlies West Warwick, characterized by Precambrian metamorphic bedrock — including granite and gneiss formations typical of southern Rhode Island. Quaternary glacial deposits overlay the bedrock, containing mineral-rich till that contributes to water chemistry. The region's geology lacks significant carbonate rock formations, yet the interaction between groundwater, surface water, and glacial deposits produces a hard water supply that reflects New England's post-glacial hydrogeology.

West Warwick's water is classified as hard, which has practical implications for household systems and appliances. Hard water causes mineral buildup in water heaters, dishwashers, and washing machines, reducing efficiency and lifespan. Residents typically experience soap scum accumulation in showers and sinks, and white chalky deposits on glassware. A water softening system is generally recommended at this hardness level to protect plumbing infrastructure and improve appliance performance. The Rhode Island Department of Health oversees water quality compliance; specific contaminant data, pH levels, and lead/copper compliance information should be obtained directly from the utility's most recent Consumer Confidence Report.

Geology & Source: Narragansett Basin; Precambrian metamorphic bedrock — granite and gneiss with Quaternary glacial till overlay; limited carbonate rock exposure; interaction of groundwater and surface water with mineral-rich glacial deposits produces hard supply

Other Rhode Island Water Reports

East Greenwich

≈ 60–120 mg/L

🟡 Moderately Hard

Warwick

≈ 0–60 mg/L

🟢 Soft

Cranston

≈ 0–60 mg/L

🟢 Soft

Johnston

≈ 0–60 mg/L

🟢 Soft

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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 West Warwick's water safe to drink?

Yes. West Warwick'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 West Warwick?

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

The USA national average is 151 mg/L. West Warwick (≈ 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 West Warwick 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.