How does Middletown's water compare to the national average?

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

Middletown Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

7.3

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

182 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 Middletown, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Middletown	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 Middletown compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Middletown, Delaware	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Glasgow, Delaware	≈ 120–179 mg/L	8.8 ppt	🟠 Hard	groundwater
Smyrna, Delaware	≈ 120–179 mg/L	95.8 ppt	🟠 Hard	groundwater
Bear, Delaware	85 mg/L	5.4 ppt	🟡 Moderately Hard	groundwater
Elkton, Maryland	≈ 120–179 mg/L	425.4 ppt	🟠 Hard	reservoir

National Benchmark

How Middletown compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Middletown	≈ 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 Middletown's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 182 mg/LpH: 7.3

Middletown City Public Water System serves thousands of residents across New Castle County, Delaware. The utility draws from a combination of groundwater sources and surface water, utilizing treatment facilities to process water before distribution. The system operates under Delaware Department of Natural Resources and Environmental Control (DNREC) oversight and must comply with all EPA Safe Drinking Water Act requirements.

The Middletown water supply sits within Delaware's Mid-Atlantic Coastal Plain watershed. The region's geology is dominated by Cretaceous and Tertiary sedimentary formations, including the Magothy and Matawan aquifers, which contain extensive limestone and marl deposits of ancient marine origin. These rock formations are rich in calcium carbonate, creating naturally hard water conditions throughout the area and directly influencing the mineral content and hardness profile of the municipal supply.

Middletown's hard water presents typical scale and mineral buildup challenges for household appliances, particularly water heaters, dishwashers, and washing machines. Residents may notice reduced soap effectiveness, film on glassware, and accelerated appliance wear. A water softener is generally recommended to extend appliance lifespan and improve cleaning efficiency. The Middletown City PWS reports that its water meets EPA legal minimums; independent testing has identified contaminants including bromodichloromethane, hexavalent chromium, and trihalomethanes (TTHMs), with total dissolved solids measuring approximately 199 ppm. Standard treatment includes chlorination for disinfection.

Geology & Source: Cretaceous and Tertiary sedimentary formations including Magothy and Matawan aquifers underlie Middletown; limestone and marl deposits from ancient marine environments dissolve calcium and magnesium carbonates — naturally hard groundwater conditions

Other Delaware Water Reports

Glasgow

≈ 120–179 mg/L

🟠 Hard

Smyrna

≈ 120–179 mg/L

🟠 Hard

Bear

85 mg/L

🟡 Moderately Hard

Elkton

≈ 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 Middletown's water safe to drink?

Yes. Middletown'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 Middletown?

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

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