Scunthorpe Water Hardness & Quality Report (2026)
Water Hardness
15°Clark21.4°fH12°dH
Source
mixed
pH Level
8.1
neutral = 7.0
Lead
0.005 mg/L
✓ Below action level
TDS
593.8 mg/L
Est. Daily Cost
£0.48
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 Scunthorpe, your appliances are currently losing 28% efficiency due to mineral buildup.
| Appliance | In Scunthorpe | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2.6 yrs | 8.5 yrs | -69% |
| Washing Machine | 5.7 yrs | 12 yrs | -53% |
| Water Heater | 7.1 yrs | 15 yrs | -53% |
Regional Water Comparison
How Scunthorpe compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Scunthorpe, Yorkshire and the Humber | 213.5 mg/L | 15° | 🔴 Very Hard | mixed |
| Brough, Yorkshire and the Humber | 109.5 mg/L | 7.7° | 🟡 Moderately Hard | mixed |
| Gainsborough, East Midlands | 232 mg/L | 16.3° | 🔴 Very Hard | mixed |
| Barton upon Humber, Yorkshire and the Humber | 206.5 mg/L | 14.5° | 🔴 Very Hard | mixed |
| Goole, Yorkshire and the Humber | 185 mg/L | 13° | 🔴 Very Hard | mixed |
National Benchmark
How Scunthorpe compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Scunthorpe | 213.5 mg/L | 🔴 High |
| United Kingdom National Avg | 183 mg/L | 🔴 High |
| Livingston Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Scunthorpe's Water Unique?
Local geology and source profile
Scunthorpe, the North Lincolnshire steel town on the Jurassic limestone and ironstone ridge, is supplied by Anglian Water drawing from the Lincolnshire Jurassic Limestone (Lincolnshire Oolite) and Lincolnshire Chalk aquifer systems. Scunthorpe sits directly on the Jurassic limestone escarpment — the same northward continuation of the Lincolnshire Oolite that provided the ironstone ore for Scunthorpe's historic steelworks. Anglian Water accesses the limestone and chalk aquifers through licensed boreholes in the North Lincolnshire area, and the supply is supplemented within the broader Anglian Water Lincolnshire network. Water is treated at Anglian Water's facilities in Lincolnshire before distribution to Scunthorpe and North Lincolnshire.
Scunthorpe's hardness of 213.5 mg/L (15.0°Clark) directly reflects the Jurassic Lincolnshire Oolite and Chalk aquifer contributions. The Lincolnshire Limestone at Scunthorpe is a Jurassic Aalenian–Bajocian oolite — a calcium carbonate rock whose aquifer yields hard groundwater. This is supplemented by Lincolnshire Chalk groundwater from the Wolds to the east, which contributes further very high dissolved calcium. The combination of Jurassic oolite and Chalk aquifer contributions produces a consistently moderately hard to hard supply. The Drinking Water Inspectorate (DWI) classifies this supply as hard — consistent with the wider Lincolnshire limestone and chalk country.
Limescale is a regular household concern in Scunthorpe. At 213.5 mg/L, limescale forms in kettles within two to three weeks and monthly descaling is advisable. Combi-boiler heat exchangers accumulate limescale deposits steadily — annual servicing with a limescale check is essential, and fitting an in-line scale inhibitor is recommended. Showerheads, taps, and bathroom surfaces develop consistent deposits. Washing-up liquid lathers moderately. Using Calgon monthly in the washing machine and maintaining a regular descaling routine is standard limescale management practice for Scunthorpe households.
Geology & Source: Supplied by Anglian Water from the Lincolnshire Jurassic Limestone and Lincolnshire Chalk aquifer systems — Scunthorpe's North Lincolnshire position on the Jurassic limestone escarpment produces moderately hard water at 213.5 mg/L (15.0°Clark).