Action | Amend and update the Waterworks Regulations |
Stage | Proposed |
Comment Period | Ended on 1/10/2020 |
Minimum 50% media expansion is very high and above typical AWWA recommendations of 20-30% and there is not necessarily significantly improved media scouring at higher expansions. Surface water plants would also find it difficult if not impossible to reach 50% expansion in summer months due to water temperature.