Poole Water Hardness & Quality Report (2026)
Water Hardness
~200–300 mg/L
Hardestimated · not lab-verified
Source
mixed
pH Level
8.1
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
387.7 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 Poole, your appliances are currently losing 33% efficiency due to mineral buildup.
| Appliance | In Poole | 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 Poole compares to its nearest neighbours
| City | Hardness | Clark° | Risk | Source |
|---|---|---|---|---|
| ▶ Poole, South West | ≈ 200–300 mg/L | 17.5° | 🟠 Hard | mixed |
| Canford Heath, South West | ≈ 0–100 mg/L | 10.7° | 🟢 Soft | mixed |
| Broadstone, South West | ≈ 0–100 mg/L | 10.6° | 🟢 Soft | mixed |
| Wimborne Minster, South West | ≈ 300+ mg/L | 20.1° | 🔴 Very Hard | mixed |
| Bournemouth, South West | ≈ 200–300 mg/L | 6.3° | 🟠 Hard | groundwater |
National Benchmark
How Poole compares to the United Kingdom average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Poole | ≈ 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 Poole's Water Unique?
Local geology and source profile
Wessex Water serves Poole and the wider South West England area, drawing its supply from underground aquifers. This water undergoes treatment at the Poole Town Treatment Works before being delivered to homes and businesses. The supply consistently meets stringent UK Drinking Water Inspectorate standards, with regular testing confirming adherence to all regulatory requirements.
Poole's water originates deep within underground aquifers, characterized by chalk and limestone formations common to southern England's geology. The journey of water through these soluble rock layers allows it to pick up substantial amounts of calcium and magnesium minerals, defining the supply as hard. These Cretaceous chalk deposits are the main reason for the water's elevated mineral content and hardness.
Homeowners in Poole often notice the effects of hard water, such as limescale accumulation on kettles, boilers, and bathroom fittings. Appliances like dishwashers, washing machines, and water heaters can suffer reduced efficiency and a shortened lifespan due to mineral buildup. Many residents opt for water softeners or anti-limescale treatments to combat these issues, and regular descaling of appliances is advised for optimal performance. The tap water is perfectly safe to drink, meeting all UK drinking standards.
Geology & Source: Chalk and limestone aquifers; soluble rock types dissolve calcium and magnesium, producing hard water
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