Swimming pool operators and trained Technical Operators need to be mindful that the installation of a variable speed drive may alter the flow rate of water through the filtration system.

Where it is intended to install a variable speed drive on a water body filtration system an application must be submitted to the Department of Health at This email address is being protected from spambots. You need JavaScript enabled to view it. before the work is approved to be undertaken. DOH has always held that pump replacement is a maintenance item whereas the installation of a variable speed drive is an alteration and requires an application to the EDPH and a written approval before commencing.

Where work has already been undertaken without the approval of the EDPH, the DOH cannot approve work retrospectively. Therefore, the Pool Operator must ensure that the flow rate of the circulation system shall meet the requirements of Section 3.1 General Requirements or be superior in performance to ensure that the pool water can recover after use by the law of consecutive dilutions. The filtration systems shall operate at the full designated flow rate 24/7/365. The Pool Operator will need to certify that the installed work meets the Code of Practice and the certification needs to be undertaken by a competent person known to the DOH.

Only Variable Speed Drives that have been designed for commercial (and public pool) use may be installed. Replacement filters with less capacity than the original (DOH approved) capacity are not permitted to be used in conjunction with variable speed drive pumps.

It is the responsibility of the trained Technical Operator to maintain plant and equipment and to ensure that all replacement filters and pumps comply with the Code of Practice

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Contact LIWA

ABN:  35 334 789 538

We provide support, professional development and networking opportunities for individuals in the aquatic industry throughout Western Australia.

  1. PO Box 726, Hillarys, WA 6923
  2. (08) 9383 8238
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