Cooling Water Chemicals

Feedwater are experts in Cooling Water Treatment & as founder members of the Legionella Control Association our customers can be confident in our products & services.
Our manufacturing facilities are ISO 9001 accredited and produce dosens of chemical treatments tailored to specific cooling system parameters many of which are available to order online.

Cooling Water Chemicals

Feedwater is a manufacturer and supplier of a range of high-quality cooling tower treatment chemicals for UK and export.

If not treated correctly, a cooling system can rapidly become choked with scale and corrosion products and become a breeding ground for all manner of problematic microbes. The cooling tower itself can become fouled with microbial slime, algal growths and if incorrectly treated can be the cause of Legionnaires’ disease.

Problems are invariably inter-related and a comprehensive treatment programme is required which will involve corrosion inhibitorsscale inhibitorspolymer dispersant and micro biocides.

Watch the Bromgard Video to find out more.

Online Ordering Available

For customers who only need chemical and need them quickly we have pioneered a new online ordering system, many of our popular cooling water treatment chemicals are available to order online from this page using secure card payments.

Cooling Water Inhibitors

Our comprehensive range of corrosion and scale inhibitors are selected to match the water chemistry, system metallurgy and operating conditions in order to provide maximum protection.


Coolguard products are multi-functional formulations incorporating threshold agents, multi-metal corrosion inhibitors and polymer dispersant as standard. They designed to be as forgiving as possible and provide simple but effective control across a broad range of applications.

Coolguard 185X – Multi-functional cooling water scale inhibitor and corrosion inhibitor for harder waters – Order Online

Coolguard 364 – Phosphate based soft water cooling water corrosion inhibitor for severe service conditions – POA

Coolguard 401 – Novel alkaline zinc based cooling tower corrosion inhibitor for softer cooling waters – Order Online

Coolguard 501 – Synergised silicate based corrosion inhibitor for moderate hardness applications – POA

Coolguard 815 – High strength cooling tower scale inhibitor for harder waters – POA

Coolguard 821 – Molybdate based scale and corrosion inhibitor – POA


Our Bromgard products combine the multi-functional performance of the Coolguard range with a bromine pre-cursor and bio-dispersant. Dosed in conjunction with Bromgard Activator they provide not only scale and corrosion inhibition but exceptional microbial control in a simple, easy to control package. Watch the video above to find out more.

Bromgard 320 – Phosphate based for severe service low hardness conditions – POA

Bromgard 420 – Zinc based for low hardness applications – POA

Bromgard 810 – Multi-functional scale and corrosion inhibitor for harder waters – POA

Bromgard 2850 – High strength inhibitor for harder waters – POA

Cooling Water Biocides and Biodispersants

Our comprehensive range of cooling water biocides includes oxidisers and non-oxidisers as well as bio-dispersants to tackle the most troublesome microbial problems.

Activ-Ox  – Chlorine dioxide systems

Bromgard Activator – Liquid bromine activator for use with Bromgard inhibitors – POA

Biocide BQ – Non-foaming polyquat, – broad spectrum, giving excellent algae control. Also suitable for swimming pools and fountains. – Order Online

Biocide BR – Bromine release cooling water biocide tablets.  – Order Online – POA

Biocide DA – Diamine acetate broad spectrum microbiocide. – POA

Biocide ITA – Broad spectrum cooling tower biocide based on a blend of isothiazolins  – Order Online

Biocide PS – THPS based biocide with an excellent environmental profile – POA

Biocide RO – Fast acting microbiocide based on DBNPA.  – Order Online

BS100 – Cooling water biodispersant for use with halogens and non-oxidisers  – Order Online

Feedbrom – Bromine pre-cursor and cooling tower biodispersant (use with Feedchlor or Bromgard Activator) – POA

Feedchlor – Stabilised liquid chlorine donor  – Order Online

Supersperse – High strength bio and oil dispersant – POA

*Use biocides safely. Always read the label and product information before use.*

Descalers & Chemical Cleaners

Also available as a service conducted by our in-house cleaning team, our chemicals are available for order by competent contractors and service providers.

Chemicals with Service

Any treatment chemical is only as good as the service that accompanies it and we’ve been treating steam boilers for over 40 years. Our regional consultants look after hundreds of sites across the UK and are experts in the treatment of cooling systems so contact us today for all your cooling water treatment chemicals and service requirements.

Own Label Cooling Water Treatment Chemicals

We can supply you with our cooling tower water chemicals with your own label on the drum. So if you are a water treatment service company, a cooling system specialist supplier or an FM company looking to increase your added value, why not contact us because we can help you.

Export Distributors Wanted

We are always looking for professional overseas partners and distributors, so if you are a water treatment specialist looking for an alternative supplier for your water treatment products, or you believe you have the capability to establish a high-quality water treatment service operation in your own territory, then please contact us.

Related Products

Legionella is a serious consideration for any cooling system treatment regime, Feedwater has their own in-house UKAS accredited laboratory for Legionella analysis, we also perform day courses and online courses in Legionella awareness.

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