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

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

Brookside Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

6.5

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

280 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 Brookside, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Brookside	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 Brookside compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Brookside, Delaware	≈ 120–179 mg/L	6.2 ppt	🟠 Hard	groundwater
Newark, Delaware	≈ 120–179 mg/L	1492.6 ppt	🟠 Hard	reservoir
Glasgow, Delaware	≈ 120–179 mg/L	8.8 ppt	🟠 Hard	groundwater
Pike Creek Valley, Delaware	≈ 120–179 mg/L	5.8 ppt	🟠 Hard	groundwater
Bear, Delaware	85 mg/L	5.4 ppt	🟡 Moderately Hard	groundwater

National Benchmark

How Brookside compares to the USA average

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

Local geology and source profile

Source: GroundwaterTDS: 280 mg/LpH: 6.5

Brookside, Delaware receives its water from a public utility in New Castle County. The supply mixes water from the Delaware River system and shallow aquifers found within the Atlantic Coastal Plain. These sources are treated using conventional filtration processes to ensure the water meets all federal and state drinking water standards. The utility draws from both the Delaware River watershed and groundwater aquifers characteristic of northern Delaware's geology.

Brookside's water originates from the Atlantic Coastal Plain, an area characterized by Cretaceous and Tertiary sediments. These underground formations consist of sand, silt, and clay deposits. Within these geological layers lie naturally occurring deposits of calcium and magnesium. This mineral content, combined with the mixed surface and groundwater sources, leads to a moderately hard water supply that is common throughout northern Delaware.

Homeowners in Brookside may notice some scale forming over time in appliances like kettles, coffee makers, and on shower heads. You might also find that soaps and detergents don't lather quite as effectively. Water heaters can accumulate mineral deposits, so periodic flushing is a good idea. While a whole-house water softener is an option, it's not strictly necessary; many residents find point-of-use filters for specific appliances like dishwashers or water heaters to be a practical solution. According to TapWaterData, five contaminants were found above EPA health-based guidelines in 2026, suggesting a certified water filter is advisable.

Geology & Source: Atlantic Coastal Plain sediments; Cretaceous and Tertiary sand, silt, and clay; calcium and magnesium deposits create moderate hardness

Other Delaware Water Reports

Newark

≈ 120–179 mg/L

🟠 Hard

Glasgow

≈ 120–179 mg/L

🟠 Hard

Pike Creek Valley

≈ 120–179 mg/L

🟠 Hard

Bear

85 mg/L

🟡 Moderately 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 Brookside's water safe to drink?

Yes. Brookside'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 Brookside?

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

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