Shoreham-by-Sea sits between Brighton and Worthing at the mouth of the River Adur — and shares the very hard water that affects the entire West Sussex and East Sussex coastline. Here's what that means for homes in Shoreham, Lancing and Southwick.

Water hardness in Shoreham-by-Sea

Shoreham's water supply comes from the same South Downs chalk aquifer that supplies much of coastal Sussex, producing consistently hard water across the town. Readings in Shoreham-by-Sea typically sit around 308–315ppm — classified as very hard and significantly above the UK average of around 200ppm.

The Adur district — covering Shoreham, Lancing, Southwick and the surrounding area — sits entirely within one of England's hardest water zones, with no significant variation between neighbourhoods.

AreaHardness (approx. ppm)Classification
Shoreham-by-Sea310Very Hard
Lancing310Very Hard
Southwick312Very Hard
Portslade315Very Hard
Steyning295Hard

Hard water in Shoreham: the daily reality

Ask any long-term Shoreham resident about their kettle, their shower head or the chrome around their taps and you'll get a familiar story. Limescale builds up quickly in this part of Sussex — faster than most residents realise until they compare notes with friends in other parts of the country.

The harbour and riverside properties

Shoreham has a distinctive stock of houseboats, converted warehouses and riverside properties along the Adur. These properties — often with more complex plumbing setups — are just as affected by hard water as conventional houses, and in some cases more so. Older and more creative plumbing configurations benefit particularly from the protection a water softener provides.

New developments in Lancing and Southwick

The growth of new residential developments across Lancing and Southwick in recent years means there are many properties in the area with new kitchens, bathrooms and heating systems that are beginning their slow deterioration from limescale. Installing a water softener early — before scale accumulates — is significantly cheaper and easier than dealing with the consequences later.

Family homes

Shoreham and Lancing are home to a significant number of family households. For families, the benefits of softened water extend beyond appliance protection: softer bathwater for young children, reduced eczema and skin irritation, less detergent required for laundry, and noticeably cleaner glassware and crockery from the dishwasher.

Local fact: The chalk that underlies the South Downs dissolves slowly into groundwater as rainwater percolates through it over decades. By the time that water reaches taps in Shoreham, it has been on a long journey through one of England's most calcium-rich geological formations.

Water softener installation in Shoreham-by-Sea

Simply Softeners provides free home surveys and professional installation across Shoreham-by-Sea, Lancing, Southwick, Portslade and surrounding areas. Whether you have a straightforward combi boiler setup or a more complex conventional system, we assess each property individually and recommend the right solution.

All our eco-friendly units are metered — meaning they regenerate based on actual water usage rather than a fixed timer. In a high-hardness area like Shoreham, this makes a significant difference to salt consumption and running costs compared to older or budget softener systems.

How quickly will I notice the difference?

Immediately, in some respects — and progressively over weeks and months in others. From day one: no new limescale deposits form anywhere in your home. Within the first week: bathroom surfaces stay clean noticeably longer; shower pressure improves as existing minor deposits begin to clear; skin feels softer after bathing. Within the first month: existing light limescale begins to dissolve. Over the first year: energy bills reduce as your boiler operates at full efficiency without scale insulation on the heat exchanger.

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People also ask
Is Shoreham-by-Sea in a hard water area?
Yes — Shoreham-by-Sea, Lancing and Southwick all record water hardness of approximately 308–315ppm, classified as very hard. The entire Adur district draws from the South Downs chalk aquifer, producing consistently high calcium levels throughout the area.
What size water softener do I need for my home?
The right size depends on your household size and water hardness. For a typical family of 4 in the Shoreham area (at ~310ppm), a 15-litre resin capacity unit is the recommended size — treating 2,800 litres between regeneration cycles. Smaller 1–3 person households can be well served by a compact 4–10 litre unit. Simply Softeners confirms the right size at your free home survey.
Can a water softener be installed in a flat?
Yes — water softeners can be installed in flats, provided there is a suitable location near the incoming mains supply and access to a drain for regeneration waste water. Compact units are available specifically for tighter spaces. Simply Softeners assesses suitability at the free home survey for all property types across Shoreham, Lancing and Southwick.
Do I need permission to install a water softener?
No planning permission is required for domestic water softener installation in the UK. However, installations must comply with the Water Supply (Water Fittings) Regulations 1999, which your installer handles. If you live in a leasehold flat, it's worth checking your lease — though most leases permit water softener installation as a standard appliance.

Free home survey for Shoreham residents

We cover Shoreham-by-Sea, Lancing, Southwick, Portslade and the wider Adur district. Free survey, fixed price, no obligation.

Book a Free Survey Call 07788 133 336