The Colton WWTP in Colton, CA was upgraded in summer 1998. The primary upgrade was the addition of two reinforced concrete race-track style aeration basins and circular clarifiers.
Three new clarifiers, an oxidation ditch and a sludge pumping station are under construction as part of a $ 6,500,000 project to up-grade an existing sewage treatment plant in the Chicago suburb of Hanover Park.
Four square cascade activating basins (A1& B1 27 x 90 m in size and A2 & B2 53 x 90 m in size) were part of the new sewage plant construction that is to treat the sewage from Magdeburg and the surrounding district.
The former town swimming pool in the centre of the old part of Ulm was given a new use. The Art Nouveau swimming pool, provided a new home for a youth music school.