Most vehicle washing systems are housed in a plant room including the filtration and water treatment system. The majority, fill up a water storage tank from this system and apply to the vehicle via spray nozzles near the brushes.

To reach the desired water quality levels for a spot free result, particles, organics and chlorine are all removed before the RO membrane removes the majority of ions and salts.

This RO water is sometimes used as the final rinse, however for the complete removal of total dissolved solids (TDS) then deionising resin is used. Some operators also reclaim the effluent from a sump beneath the vehicle and treat this before re-using.

Stages of Filtration & Water Treatment

Particle Removal

Prevents debris, scale flakes, dirt and particle build up in pipework, tanks, equipment and where present, premature blinding of filtration stages further along the cascade.

Particle Removal - Fileder Filter Systems

Chlorine and Organics Removal

Helps the taste and odour of the liquid and where present, protects RO membranes from chemical attack.

Chlorine and Organics Removal - Fileder Filter Systems

RO Water Production

Very pure water is produced using reverse osmosis membranes to separate the majority of salts and ions from the feed water and sending the salts and ions to waste or re-circulation.

RO Water Production - Fileder Filter Systems


The use of a mixed-bed resin of anion and cation, attracts all salts and ions, removing them from the water.

Deionising - Fileder Filter Systems

TDS Monitoring

Devices that measure the conductivity of water between 2 probes provide a good indicator of the ions and salts content.

TDS Monitoring - Fileder Filter Systems

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