Coalville Water Hardness & Quality Report (2026)
Water Hardness
10.9°Clark15.6°fH8.7°dH
Source
mixed
pH Level
7.5
neutral = 7.0
Lead
0.002 mg/L
✓ Below action level
TDS
277.6 mg/L
Est. Daily Cost
£0.35
energy & soap waste
Source: DWI Data Portal · Updated 2026
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 Coalville, your appliances are currently losing 21% efficiency due to mineral buildup.
| Appliance | In Coalville | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.7 yrs | 8.5 yrs | -21% |
| Washing Machine | 9.5 yrs | 12 yrs | -21% |
| Water Heater | 11.9 yrs | 15 yrs | -21% |
Regional Water Comparison
How Coalville compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Coalville, East Midlands | 155.5 mg/L | 10.9° | 🟡 Moderately Hard | mixed |
| Shepshed, East Midlands | ≈ 200–300 mg/L | 14.2° | 🟠 Hard | mixed |
| Ashby-de-la-Zouch, East Midlands | 244.5 mg/L | 17.2° | 🟠 Hard | mixed |
| Earl Shilton, East Midlands | ≈ 200–300 mg/L | 9.6° | 🟠 Hard | mixed |
| Loughborough, East Midlands | ≈ 200–300 mg/L | 15.8° | 🟠 Hard | mixed |
National Benchmark
How Coalville compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Coalville | 155.5 mg/L | 🟡 Moderate |
| United Kingdom National Avg | 177 mg/L | 🟡 Moderate |
| Skipton Top Rated | 7.1 mg/L | 🟢 None |
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What Makes Coalville's Water Unique?
Local geology and source profile
Severn Trent Water supplies Coalville, Leicestershire, drawing water from both surface reservoirs and groundwater sources across the East Midlands. This vast utility operates numerous treatment plants, ensuring water reaches the roughly 8 million people it serves throughout the Midlands region. The Coalville area is part of the East Midlands watershed, where a blend of surface and groundwater sources are utilized. The character of this supply is shaped by the underlying geology and the mineral content dissolved within it.
The East Midlands region is defined by Carboniferous Coal Measures formations, which are subsequently overlain by Triassic Mercia Mudstone and sandstone strata. These geological features, including limestone and sandstone aquifers, are responsible for leaching minerals such as calcium and magnesium into the water. This process results in a water supply that is typically classified as moderately hard to hard, a common characteristic for the area's water.
Homeowners in Coalville may notice limescale buildup on appliances like kettles, shower heads, and within heating systems, which can impact efficiency and lead to increased upkeep. Regular use of descaling agents can help manage these deposits. For those experiencing persistent issues with mineral buildup, installing a domestic water softener is often a practical solution to prolong the life of household appliances and reduce maintenance demands. Severn Trent Water provides detailed water quality information on its website.
Geology & Source: East Midlands; Carboniferous Coal Measures, Triassic Mercia Mudstone, limestone and sandstone aquifers contribute moderate to high hardness
Other East Midlands Water Reports
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