Wessex Water Water Hardness
Top-performing water and sewerage company serving 2.8 million customers in the South West of England. Discover network-wide PPM ratings, chalk aquifer vs reservoir water sources, and local appliance calibration guidelines.
Is Wessex Water Water Hard or Soft?
Yes, tap water supplied by Wessex Water across Bath, Somerset, Wiltshire, and Dorset is hard to very hard, averaging 290 PPM (20.3° Clark). Rich in calcium carbonate dissolved from famous Jurassic oolitic limestone (Bath Stone) and southern chalk hills.
Primary Abstraction: Wessex Water abstracts roughly 75% of drinking water from groundwater springs and boreholes sunk into limestone and chalk strata, with the remainder from lowland reservoirs.
Where Does Wessex Water Water Come From?
Water hardness across Wessex Water's licensed territory is strictly determined by regional hydrogeology. Rainwater is naturally soft when it falls from clouds, but absorbs dissolved minerals as it percolates through soil and rock layers before municipal abstraction.
Major population centers served by Wessex Water include: Bath, Bristol, Dorchester, Salisbury, Bournemouth, Trowbridge, Taunton. If your water bill comes from Wessex Water, your tap water is certified by the Drinking Water Inspectorate (DWI) and adheres to all British potable safety standards.
DWI Technical Reference
- Supplier Codewessex-water
- Typical Range250 – 315 PPM (mg/L CaCO3)
- Source Classificationchalk groundwater
- Coverage RegionBath, Bristol, Somerset, Wiltshire, and Dorset
Appliance Care & Heating Compliance for Wessex Water Customers
Descale every 3–4 weeks with citric acid powder. Heavy scale crust reduces heating speed and taints tea.
Set to Level 4 or H05. Never rely solely on all-in-one tablets in Wessex Water territory.
Comply with Part L building regulations by fitting an approved inline scale reducer or water softener.
Wessex Water Network Postcode Outcodes (72)
Search and explore official DWI water hardness readings across all postal districts supplied by Wessex Water.
Living in a Hard Water Zone (TA9 averages 290 PPM)? Compare Approved Local Installers
Get up to 3 free, no-obligation quotes from WRAS-approved water softener installers and heating engineers serving Wessex Water Service Area.
Frequently Asked Questions: Wessex Water Water Hardness
How hard is water in the Wessex Water region?
Wessex Water tap water averages between 250 and 315 PPM (17.5° to 22.0° Clark), classifying it firmly as hard to very hard.
Why is water so hard in Bath and Somerset?
The region sits on Jurassic oolitic limestone (Bath Stone) and the chalk hills of Salisbury Plain. Rain dissolving through these rocks creates mineral-dense groundwater.
What dishwasher setting should I use in Wessex Water areas?
Set your dishwasher water hardness dial to H05 on Bosch/Neff/Siemens, or Level 4 on Beko, and ensure granular salt is consistently replenished.
Do boilers break down faster in Wessex Water areas?
Yes, limescale accumulation on secondary plate heat exchangers causes kettling noises and temperature fluctuations, requiring BS 7593 scale inhibitors.