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Bolton upon Dearne Water Hardness & Quality Report (2026)

Water Hardness

108.5mg/L
Slightly Hard

7.6°Clark10.9°fH6.1°dH

Source

mixed

pH Level

7.2

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

128.9 mg/L

Est. Daily Cost

£0.25

energy & soap waste

Source: DWI Data Portal · Updated 2026

108.5mg/L as CaCO₃Slightly Hard

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 Bolton upon Dearne, your appliances are currently losing 14% efficiency due to mineral buildup.

ApplianceIn Bolton upon DearneSoft Water CityEfficiency Loss
Kettle
6 yrs
8.5 yrs-29%
Washing Machine
9.6 yrs
12 yrs-20%
Water Heater
11.3 yrs
15 yrs-25%

Regional Water Comparison

How Bolton upon Dearne compares to its nearest neighbours

CityHardnessClark°RiskSource
Bolton upon Dearne, Yorkshire and the Humber108.5 mg/L7.6°🟡 Slightly Hardmixed
Wath upon Dearne, Yorkshire and the Humber108.5 mg/L7.6°🟡 Slightly Hardmixed
Mexborough, Yorkshire and the Humber108.5 mg/L7.6°🟡 Slightly Hardmixed
Rawmarsh, Yorkshire and the Humber102.5 mg/L7.2°🟡 Slightly Hardmixed
Wombwell, Yorkshire and the Humber110.1 mg/L7.7°🟡 Slightly Hardmixed

National Benchmark

How Bolton upon Dearne compares to the United Kingdom average

BenchmarkHardnessAppliance Risk
Bolton upon Dearne108.5 mg/L🟡 Low
United Kingdom National Avg177 mg/L🟡 Moderate
Skipton Top Rated7.1 mg/L🟢 None

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What Makes Bolton upon Dearne's Water Unique?

Local geology and source profile

Source: MixedTDS: 128.9 mg/LpH: 7.2

Bolton upon Dearne is supplied by Yorkshire Water, a major utility serving the Yorkshire and the Humber region. The company utilizes a mixed water strategy, drawing from both surface water sources like rivers and reservoirs, and groundwater. While specific treatment facilities and reservoirs directly serving Bolton upon Dearne were not detailed in the available public information, the utility manages a broad network across the region to provide drinking water to its customers. The company's operations are extensive, covering a diverse geographical area.

The geology beneath Bolton upon Dearne is characterized by Carboniferous millstone grit and coal measures, typical of the South Yorkshire coalfield. This bedrock is largely non-calcareous, meaning it contains fewer minerals like calcium and magnesium that contribute to water hardness. This contrasts with other parts of Yorkshire, such as areas around Hull, Leeds, and Sheffield, which receive harder water supplies from chalk and limestone aquifers. The geological makeup here leans towards softer water characteristics.

Residents in Bolton upon Dearne, being in a soft water area, will likely notice less limescale buildup on household appliances like kettles and shower heads, potentially extending their lifespan and reducing the need for frequent descaling. You'll probably find that soaps and detergents work more efficiently, requiring less product for effective cleaning. While water softeners aren't typically essential for managing scale in this region, some individuals may opt for one based on personal preference. Yorkshire Water monitors various water quality parameters, but specific hardness data for Bolton upon Dearne isn't routinely published.

Geology & Source: Carboniferous millstone grit and coal measures; non-calcareous bedrock yields softer water

Other Yorkshire and the Humber Water Reports

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Frequently Asked Questions

Is Bolton upon Dearne's water safe to drink?
Yes. Bolton upon Dearne's water meets all DWI drinking water standards. The hardness is 108.5 mg/L (Slightly Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.
Do I need a water softener in Bolton upon Dearne?
Bolton upon Dearne's water is slightly hard at 108.5 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.
How does Bolton upon Dearne compare to the United Kingdom average?
The United Kingdom national average is 177 mg/L. Bolton upon Dearne (108.5 mg/L) is 69 mg/L below the national average. The softest major city is Skipton at just 7.1 mg/L.