Using Point of Use Filters

If you are going to use a Point of Use filter to remove Legionella or Pseudomonas aeruginosa bacteria from water at an outlet then how do you know which one to pick from the many options available.

Here are a few pointers as to what to look for:

  • CE marked medical device or ISO 13485 (although medical grade filters are not necessarily required for Legionella/Pseudomonas control)
  • 0.2 μm sterilising grade membrane (validated retention of >107CFU/cmBrevundimonas diminuta according to ASTM F838-05
  • Individually integrity tested and easily traceable
  • WRAS approval for POU filters and connectors
  • Compliant to standards for plastic in drinking water (BS 6920:2000 and 2002/72/EC)
  • Compatible with a wide variety of heat, chemical and shock treatments
  • Protection against retrograde contamination
  • Field trial data
  • Independent peer reviewed clinical publications
  • Good level of customer support/service delivery

Other considerations may include; what is the recommended frequency of replacement, can you put a used POU filter back on after taking a sample from the outlet, will the filter fit my outlet (is there a suitable adapter available), is there space on my wash hand basin or sink to use the chosen filter, how much do they cost, does the supplier have a recycling policy and system?

Hopefully by considering some of the above you will choose the right POU filter to meet your needs.

Collaton Consultancy Limited does not sell POU filters so has no vested interest in the final choice you make. We offer consultancy, training, expert witness services and we act as Authorising Enginer (Water) so if you need independent help and support contact us via email or via phone +44 (0)7958 124563.

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