What does biofilm look like in a pool?

Biofilm in pools typically takes the form of a thin, slimy film that coats surfaces within and around it. It often displays shades of green, brown or grayish depending on which microorganisms are present and visible spots could include pool walls, tiles, ladders steps or any submerged objects; additionally it may form on equipment such as pumps filters and skimmers.

Biofilm can appear differently depending on its stage of development. When initial development begins, biofilm may appear less noticeable as a thin, transparent layer; but as it matures into maturity it thickens, becomes opaque, and takes on a slimy texture; sometimes visible clumps or patches of biofilm may form in areas with poor circulation or stagnant water.

If you suspect biofilm in your pool, it is imperative that it is addressed promptly. Biofilm can house harmful bacteria, algae and microorganisms which pose water quality issues, surface deterioration risks and potential health concerns for swimmers. Regular cleaning, disinfection and the maintenance of appropriate chemical balance are crucial steps towards removing and preventing biofilm formation in pools. Visit us on our cleaning page for  more information.