A species never seen before in the region, the algae thrived in warm weather, which made it difficult to remove.
Now Goulburn Valley Water will open its Tongala water treatment plant during National Water Week so the community can find out more about the unusual event.
Goulburn Valley Water education officer Kristy Elrington said there would be guided tours and the opportunity to speak to water experts as part of the open day on Monday.
She said National Water Week was a great opportunity for people to discover the behind-the-scenes of delivering safe, reliable and affordable water to houses and businesses.
“National Water Week is a great chance for people to understand how we supply water, and what’s involved in the treatment process to ensure it’s safe to drink,” Ms Elrington said.
“We’re encouraging people to come down and learn more and have a chat.
“We’re really appreciative of how patient the community was with us while we were working to improve the water quality during the event, so we’d love for people to celebrate with us next week.”
Since February, Goulburn Valley Water has upgraded a number of water treatment plants in the region to prepare for expected similar conditions this summer, to ensure people will continue to receive high quality water.
A free barbecue will also be available on Monday, thanks to Tongala Lions Club, and people can stay hydrated at a mini water café.
National Water Week runs from October 21 to 27 and aims to build awareness of the value of water and inspire discussion on how people can protect water environments and ensure sustainability of resources for the future.
Registrations are not required for the free event, but people wishing to attend will need to wear enclosed, flat footwear.
For more information, phone 5832 4869 or email waterweek@gvwater.vic.gov.au