World's End Water Hardness & Quality Report (2026)
Water Hardness
~200–300 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
8.3
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
459.5 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 World's End, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In World's End | 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 World's End compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ World's End, Greater London | ≈ 200–300 mg/L | 17.5° | 🟠 Hard | mixed |
| Enfield Town, Greater London | ≈ 200–300 mg/L | 15.5° | 🟠 Hard | mixed |
| Cockfosters, Greater London | ≈ 300+ mg/L | 15.7° | 🔴 Very Hard | mixed |
| Palmers Green, Greater London | ≈ 200–300 mg/L | 19.3° | 🟠 Hard | mixed |
| Southgate, Greater London | ≈ 300+ mg/L | 16.7° | 🔴 Very Hard | mixed |
National Benchmark
How World's End compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ World's End | ≈ 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 World's End's Water Unique?
Local geology and source profile
Your water supply for World's End, Chelsea, is managed by Thames Water. While specific details for this exact location weren't immediately available, general information for London points to a mixed water source. This typically involves water drawn from rivers and underground aquifers, which then undergoes treatment at facilities like the Coppermills Water Treatment Works before reaching your tap. For precise details on your local source and treatment processes, Thames Water is the best point of contact.
London's water predominantly originates from the Chalk aquifer, a vast underground reservoir formed during the Cretaceous period. The water filters through layers of chalk and limestone, dissolving minerals like calcium and magnesium. This geological process is the primary reason for the characteristically hard water found throughout the Greater London area. The River Lee also contributes to the supply, with its own distinct mineral profile influenced by the surrounding geology.
Homeowners in World's End might notice the effects of this hard water, such as limescale buildup in kettles and on showerheads, and perhaps a less effective lather from soaps and detergents. Appliances like water heaters and dishwashers can also suffer reduced efficiency and lifespan due to scale deposits. Regular descaling of appliances can help mitigate these issues, and many residents find installing a water softener provides significant relief from the challenges of hard water.
Geology & Source: Chalk aquifer; high calcium and magnesium content from limestone bedrock produce very hard water
Other Greater London Water Reports
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