Kempston Water Hardness & Quality Report (2026)
Water Hardness
17.4°Clark24.9°fH13.9°dH
Source
mixed
pH Level
8
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
395.5 mg/L
Est. Daily Cost
£0.56
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 Kempston, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In Kempston | 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 Kempston compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Kempston, East of England | 248.5 mg/L | 17.4° | 🟠 Hard | mixed |
| Kempston Hardwick, East of England | ≈ 300+ mg/L | 17.4° | 🔴 Very Hard | mixed |
| Bedford, East of England | ≈ 200–300 mg/L | 17° | 🟠 Hard | mixed |
| Ampthill, East of England | ≈ 300+ mg/L | 12.2° | 🔴 Very Hard | mixed |
| Flitwick, East of England | ≈ 300+ mg/L | 21.1° | 🔴 Very Hard | mixed |
National Benchmark
How Kempston compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Kempston | 248.5 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 Kempston's Water Unique?
Local geology and source profile
Anglian Water Services supplies Kempston, a community in Bedfordshire within the East of England, drawing primarily from groundwater. Its main sources are boreholes tapping the Chalk aquifer, particularly in the Bedford Ouse Valley. Water undergoes treatment at facilities like the Kempston Water Treatment Works, where processes such as aeration, filtration, chlorination, and fluoridation are employed to meet stringent quality standards. The utility's vast network serves millions across East Anglia and parts of the East Midlands, with Kempston falling under its eastern operational region.
Kempston's water originates from the Cretaceous Chalk Group aquifer, a significant karst system underpinning much of Southeast England. This geological formation, composed of white micritic limestone often containing flint nodules, facilitates rapid water infiltration and the dissolution of minerals. This process, a result of marine sedimentation approximately 100 million years ago, naturally enriches the water with minerals. Unlike regions with softer geology like granite or peat, the soluble carbonate rocks of the Chalk aquifer yield water with a characteristically hard mineral content.
Homeowners in hard water areas like Kempston often notice limescale buildup, which can reduce the efficiency of appliances such as kettles, boilers, washing machines, and showerheads. Even a thin layer of scale, as little as 1.6mm, can decrease efficiency by up to 12%. This buildup also means appliances may require more detergent and energy, potentially leading to costly repairs over time. Simple maintenance, like descaling with vinegar or adding washing soda to laundry, can help. For comprehensive protection throughout the home, installing a water softener is highly recommended to combat scale damage.
Geology & Source: Chalk aquifer; Cretaceous limestone bedrock dissolves calcium and magnesium ions, imparting hard water.
Other East of England Water Reports
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