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

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

Smyrna Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.7

neutral = 7.0

Lead

0.005 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 Smyrna, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Smyrna	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 Smyrna compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Smyrna, Delaware	≈ 120–179 mg/L	95.8 ppt	🟠 Hard	groundwater
Dover, Delaware	≈ 120–179 mg/L	57.1 ppt	🟠 Hard	groundwater
Middletown, Delaware	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Bear, Delaware	85 mg/L	5.4 ppt	🟡 Moderately Hard	groundwater
Glasgow, Delaware	≈ 120–179 mg/L	8.8 ppt	🟠 Hard	groundwater

National Benchmark

How Smyrna compares to the USA average

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

Local geology and source profile

Source: GroundwaterTDS: 182 mg/LpH: 7.7

The Smyrna Water Department, serving Smyrna in Kent County, Delaware, draws all its supply from the local unconfined Columbia Formation-Cheswold groundwater aquifer. While no specific treatment plants are named, disinfection with chlorine or hypochlorite is standard practice. The utility can be reached for emergencies at 302-653-9231 or 302-389-2326. The groundwater originates directly beneath Kent County, bypassing any surface water sources or defined watersheds. This system provides water to the municipality of Smyrna.

The groundwater comes from the unconfined Columbia Formation-Cheswold aquifer, characterized by Quaternary and Tertiary sedimentary deposits like sands, gravels, and clays. These formations, part of the Columbia Formation and older Cheswold sands, allow for natural mineral leaching, particularly calcium and magnesium. This geological makeup results in a moderately hard water supply, distinct from softer supplies derived from glacial melt or rainfall, as it lacks the deep limestone dissolution found in karst regions.

This moderately hard water can lead to noticeable scale buildup in appliances such as dishwashers, washing machines, tea kettles, and showerheads, which can reduce their efficiency. Mineral deposits may also affect faucet aerators and water heaters, potentially increasing energy consumption by 20-30%. While regular descaling with vinegar or using magnetic anti-scale devices can help, installing a water softener is often recommended for households concerned about hard water to prolong appliance lifespan and enhance soap effectiveness.

Geology & Source: Columbia Formation-Cheswold aquifer; sedimentary sands and clays produce moderate hardness

Other Delaware Water Reports

Dover

≈ 120–179 mg/L

🟠 Hard

Middletown

≈ 120–179 mg/L

🟠 Hard

Bear

85 mg/L

🟡 Moderately Hard

Glasgow

≈ 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 Smyrna's water safe to drink?

Yes. Smyrna'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 Smyrna?

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

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