Pontefract Water Hardness & Quality Report (2026)
Water Hardness
10.3°Clark14.7°fH8.2°dH
Source
mixed
pH Level
7.7
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
373.6 mg/L
Est. Daily Cost
£0.33
energy & soap waste
Source: DWI Data Portal · Updated 2026
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 Pontefract, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Pontefract | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 8.2 yrs | 12 yrs | -32% |
| Water Heater | 9.7 yrs | 15 yrs | -35% |
Regional Water Comparison
How Pontefract compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Pontefract, Yorkshire and the Humber | 147 mg/L | 10.3° | 🟠 Hard | mixed |
| Featherstone, Yorkshire and the Humber | 99 mg/L | 6.9° | 🟡 Moderately Hard | mixed |
| Knottingley, Yorkshire and the Humber | 138 mg/L | 9.7° | 🟠 Hard | mixed |
| Castleford, Yorkshire and the Humber | 175 mg/L | 12.3° | 🟠 Hard | mixed |
| Kippax, Yorkshire and the Humber | 146 mg/L | 10.2° | 🟠 Hard | mixed |
National Benchmark
How Pontefract compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Pontefract | 147 mg/L | 🟠 Moderate |
| United Kingdom National Avg | 183 mg/L | 🔴 High |
| Livingston Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Pontefract's Water Unique?
Local geology and source profile
Pontefract, the historic market town in the south-east Wakefield district in west Yorkshire, is supplied by Yorkshire Water from the Washburn Valley Reservoirs — Fewston, Swinsty, and Thruscross — supplemented with contributions from the Permian Magnesian Limestone aquifer that forms the broad scarp to the east of Pontefract extending through Castleford, Ferrybridge, and the east Yorkshire limestone country. Yorkshire Water blends the soft Washburn and Pennine upland reservoir supply with moderate Magnesian Limestone groundwater contributions from the east Wakefield distribution zone. Pontefract's lower hardness compared to the limestone-dominant zones of east Yorkshire reflects the blend of soft upland reservoir supply with limited Magnesian Limestone influence in the distribution network.
Pontefract's hardness of 147 mg/L (10.3°Clark) reflects the blend of soft Washburn upland reservoir supply and moderate Permian Magnesian Limestone groundwater in the south-east Wakefield distribution zone. Yorkshire Water's blending produces a moderately soft supply despite Pontefract's position near the limestone scarp. The Drinking Water Inspectorate (DWI) classifies this supply as moderately soft.
Limescale is a moderate concern in Pontefract. At 147 mg/L, limescale forms gradually in kettles and descaling every one to two months is typically sufficient. Combi-boiler heat exchangers accumulate modest deposits; annual servicing is sensible. Showerheads and taps develop light to moderate deposits. Washing-up liquid lathers reasonably well. A monthly Calgon tablet in the washing machine and a regular kettle descale is adequate limescale management for most Pontefract households.
Geology & Source: Supplied by Yorkshire Water from the Washburn Valley Reservoirs blended with Permian Magnesian Limestone groundwater — Pontefract's east Wakefield position adjacent to the Magnesian Limestone scarp draws on Yorkshire Water's blended upland and limestone supply, producing moderately soft water at 147 mg/L (10.3°Clark).