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Water Softeners & Filters

A water treatment engineer holding a filter cartridge beside a softener in an open sink cupboard

Request quotes for water softeners, filters and purifiers, and legionella testing and control. Choose your job and describe it in a few short steps.

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A fitter closing the cupboard door on a newly installed water softener in a kitchen

Overview

Water treatment and legionella

This page covers water treatment in homes and other buildings: water softeners, water filters and purifiers, legionella risk assessments, testing and control, and supplying and maintaining water coolers.

Pick the nearest job from the list in the form. If yours isn't there, choose the closest and explain what you need in the description.

Jobs you can request

Typical water treatment jobs

Choose one of these in the form, or pick the closest and describe what you need.

  1. Water Softeners

    A water softener fitted on the incoming mains to reduce limescale.

  2. Water Filters

    A water filter fitted under a sink, at a tap or on the incoming supply.

  3. Purifiers

    A water purifier fitted, such as a reverse osmosis or UV treatment unit.

  4. Legionella Assessment

    An assessment of the risk from legionella bacteria in a building's water system.

  5. Legionella Testing

    Water samples taken from a system and tested for legionella bacteria.

  6. Legionella Control

    Steps to control legionella, such as flushing outlets and checking temperatures.

Worth knowing

Worth checking before work starts

A few rules and checks that apply to this kind of work.

  1. Tell your water company

    In England and Wales, your water company must be told before a softener that uses water to regenerate, or a reverse osmosis unit, is fitted. Work can't start without its consent.

  2. Keep a drinking water tap

    The Drinking Water Inspectorate advises keeping an unsoftened supply to the kitchen tap for drinking and cooking, and not using softened water to make up baby feeds.

  3. Legionella in rented homes

    If you let a home in Great Britain, you have a legal duty to assess the risk from legionella bacteria in its water system.

  4. Know your water first

    Before choosing a filter or softener, the Drinking Water Inspectorate suggests asking your water company for its report on tests of your water supply.

Questions

Water treatment questions

My job isn't in the list. What should I choose?

Choose the closest job, then explain what you need in the description step.

What jobs can I request quotes for here?

Water softeners, filters and purifiers, legionella assessment, testing and control, and water coolers. The full list is in the form's first step.

Do landlords need a legionella test certificate?

No. In Great Britain, HSE says the law does not require landlords to get a legionella test certificate, and testing is not usually needed for domestic hot and cold water systems.

Can I request quotes to service or repair a water softener?

Yes. Choose Water Softeners and describe the work in the description.

How much does a water softener cost to install?

It depends on the softener's type and size, how many people live in the home, where it can go, and how far the pipes need to run. Ask about running costs too, such as salt and servicing.

Ready to describe your job?

Four short steps: the job, when you'd like it done, a description and your details.