H2o Legionella Control Services have completed several complicated tank installation and refurbishment projects in residential, commercial and healthcare locations.

There are some great examples of the work we have done in our work page (read more >>).

Cold water storage tanks should be installed in compliance with The Water Supply (Water Fittings) Regulations 1999 and Scottish Water Byelaws 2004. A summary of the requirements of these regulations and a picture of an acceptable tank design taken from HSG 274, Part 2 is provided below:

Cold water storage tanks must have the following:

• Close fitting and rigid lid. Wood is an unacceptable material for a tank lid.
• Well insulated.
• A screened air vent to minimise the build-up of condensation on the underside of the tank lid.
• An insect / rodent screen on the overflow pipe to prevent any contamination of the water.
• Isolation valves on the incoming mains and cold water outlets to facilitate routine maintenance and repair works.
• The inlet and outlets should also be at opposite ends of the tank to encourage water flow across the tank and avoid low flow areas within the tank.
• The tank’s storage capacity should be less than 24 hours usage but ideally less than 12 hours usage is recommended.
• The tank should also be clean internally and constructed from suitable materials to hold potable water.

Whilst cold water storage tanks should be fitted to comply with water regulations this is not always the case and our legionella risk assessments often identify tanks that fail to comply with some or all of the above requirements.

H2o Legionella Control Services can fully upgrade cold water storage tanks to bring them up to compliance with water regulations.

Where it is not possible to upgrade an existing tank we can also supply & install new cold water storage tanks. We can install tanks ranging from 50 gallon one piece plastic tanks all the way up several thousand litre capacity glass reinforced plastic (GRP) sectional tanks.

For more information please get in touch.