Mossley Hill Water Hardness & Quality Report (2026)
Water Hardness
~200–300 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
7.9
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
403.3 mg/L
Est. Daily Cost
£0.57
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 Mossley Hill, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In Mossley Hill | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 5.7 yrs | 8.5 yrs | -33% |
| Washing Machine | 8 yrs | 12 yrs | -33% |
| Water Heater | 10 yrs | 15 yrs | -33% |
Regional Water Comparison
How Mossley Hill compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Mossley Hill, North West | ≈ 200–300 mg/L | 17.5° | 🟠 Hard | mixed |
| Allerton, North West | ≈ 200–300 mg/L | 11.4° | 🟠 Hard | mixed |
| Wavertree, North West | ≈ 0–100 mg/L | 6.2° | 🟢 Soft | mixed |
| Childwall, North West | ≈ 200–300 mg/L | 8° | 🟠 Hard | mixed |
| Old Swan, North West | ≈ 0–100 mg/L | 6.1° | 🟢 Soft | mixed |
National Benchmark
How Mossley Hill compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Mossley Hill | ≈ 200–300 mg/L | 🟠 High |
| United Kingdom National Avg | 177 mg/L | 🟡 Moderate |
| Skipton Top Rated | 7.1 mg/L | 🟢 None |
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What Makes Mossley Hill's Water Unique?
Local geology and source profile
United Utilities supplies Mossley Hill residents with water from two primary sources. The main supply comes from Llyn Vyrnwy reservoir, a large lake in Powys, Wales. This is blended with water from Dee Valley sources in the southern part of Liverpool's distribution network. All water is treated at the Prescot Water Treatment Works before reaching homes.
This water originates from regions characterized by calcareous rocks. These geological formations are rich in minerals like calcium and magnesium carbonates. As water flows through and over these rocks, it dissolves these minerals, leading to the classification of the water as hard. The Dee Valley area, in particular, contributes to this mineral content.
Homeowners in the area will likely notice the effects of this hard water. It can lead to a buildup of scale inside pipes and appliances, potentially shortening their lifespan. You might also find that soap and detergents don't lather as easily. To combat scale, regular descaling of appliances like kettles and washing machines is recommended. If you have significant issues, a water softener might be a worthwhile investment for your home.
Geology & Source: Supplied by United Utilities from Llyn Vyrnwy reservoir blended with Dee Valley sources; calcareous rocks produce hard water (11.4°Clark)
Other North West Water Reports
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