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Darton Water Hardness & Quality Report (2026)

Water Hardness

86.7mg/L
Soft

6.1°Clark8.7°fH4.9°dH

Source

mixed

pH Level

7.9

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

323.8 mg/L

Est. Daily Cost

£0.20

energy & soap waste

Source: DWI Data Portal · Updated 2026

86.7mg/L as CaCO₃Soft

0–99

mg/L

Soft

100–149

mg/L

Slightly Hard

150–199

mg/L

Moderately Hard

200–300

mg/L

Hard

300+

mg/L

Very Hard

Appliance Damage Report

In Darton, your appliances are currently losing 12% efficiency due to mineral buildup.

ApplianceIn DartonSoft Water CityEfficiency Loss
Kettle
6.7 yrs
8.5 yrs-21%
Washing Machine
10.4 yrs
12 yrs-13%
Water Heater
12.1 yrs
15 yrs-19%

Regional Water Comparison

How Darton compares to its nearest neighbours

CityHardnessClark°RiskSource
Darton, Yorkshire and the Humber86.7 mg/L6.1°🟢 Softmixed
Barnsley, Yorkshire and the Humber22.7 mg/L1.6°🟢 Softmixed
Horbury, Yorkshire and the Humber39 mg/L2.7°🟢 Softmixed
Wakefield, Yorkshire and the Humber57.4 mg/L4°🟢 Softmixed
Ossett, Yorkshire and the Humber51.1 mg/L3.6°🟢 Softmixed

National Benchmark

How Darton compares to the United Kingdom average

BenchmarkHardnessAppliance Risk
Darton86.7 mg/L🟢 None
United Kingdom National Avg177 mg/L🟡 Moderate
Skipton Top Rated7.1 mg/L🟢 None

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What Makes Darton's Water Unique?

Local geology and source profile

Source: MixedTDS: 323.8 mg/LpH: 7.9

Yorkshire Water provides water to Darton, a community in Barnsley, South Yorkshire. Their supply originates from a mix of sources, including surface water from rivers like the River Dearne and Pennine reservoirs such as Scout Dike and Langsett. Groundwater from local boreholes also contributes to the supply. Water undergoes treatment at facilities like Barugh Green or Cawthorne before reaching the taps of over 5 million customers across Yorkshire. This system taps into the Dearne Valley watershed, part of the Humber River Basin District, drawing from geological formations characteristic of the region.

The region's geology is dominated by Carboniferous limestone and gritstone. As rainwater filters through these permeable rocks, it dissolves minerals like calcium and magnesium, giving the water its hard quality, especially in lower-lying areas like Darton. While upland reservoirs capture softer water from moorland catchments, the overall supply, particularly from groundwater, is marked by a significant mineral content. This geological influence means the water naturally retains a high mineral load without substantial softening processes occurring in the ground.

Homeowners in the Darton area often contend with limescale buildup in appliances such as kettles, boilers, and washing machines. This scale reduces efficiency and shortens the lifespan of heating elements and hot water systems by insulating them and increasing energy consumption. To combat these effects, regular descaling with vinegar or the installation of a water softener is frequently recommended. A softener can protect plumbing, improve how soap lathers, and generally mitigate the challenges posed by hard water. The water's pH typically ranges from 7.5 to 8.5, and while lead and copper levels are well within safe limits following pipe upgrades, occasional seasonal taste or odor issues from algae are managed by the utility.

Geology & Source: Carboniferous Limestone and Millstone Grit formations; limestone aquifers yield hard water; upland reservoirs yield softer water

Other Yorkshire and the Humber Water Reports

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Frequently Asked Questions

Is Darton's water safe to drink?
Yes. Darton's water meets all DWI drinking water standards. The hardness is 86.7 mg/L (Soft), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Darton?
Darton's water is soft at 86.7 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.
How does Darton compare to the United Kingdom average?
The United Kingdom national average is 177 mg/L. Darton (86.7 mg/L) is 90 mg/L below the national average. The softest major city is Skipton at just 7.1 mg/L.