Seqwater owns and operates the following Water Treatment Plants in south east Queensland:
- Amity Point Water Treatment Plant, North Stradbroke Island
- Algester Rd Water Treatment Plant, Algester
- Banksia Beach Water Treatment Plant, Bribie Island
- Beaudesert Water Treatment Plant, Beaudesert
- Boonah-Kalbah Water Treatment Plant, Kalbar
- Bribie Island Water Treatment Plant, Woorim
- Caboolture Water Treatment Plant, Caboolture
- Canungra Water Treatment Plant, Canungra
- Capalaba Water Treatment Plant, Capalaba
- Chandler Water Treatment Plant, Chandler
- Dayboro Water Treatment Plant, Samsonvale
- Dunwich Water Treatment Plant, Stradbroke Island
- Enoggera Water Treatment Plant, The Gap
- Esk Water Treatment Plant, Esk
- Ewen Maddock Water Treatment Plant, Sunshine Coast
- Forest Lake Water Treatment Plant, Forest Lake
- Helen Street Water Treatment Plant, Beaudesert
- Image Flat Water Treatment Plant, Nambour
- Jimna Water Treatment Plant, Jimna
- Kenilworth Water Treatment Plant, Kenilworth
- Kilcoy Water Treatment Plant, Kilcoy
- Kooralbyn Water Treatment Plant, Kooralbyn
- Landers Shute Water Treatment Plant, Palmwoods
- Linville Water Treatment Plant, Linville
- Logan Maroon Dam Water Treatment Plant, Maroon Dam
- Lower Lockyer Atkinson Dam Water Treatment Plant
- Lowood Water Treatment Plant, Lowood
- Maleny Water Treatment Plant, Maleny
- Mary Valley - Borumba Downs Water Treatment Plant
- Molendinar Water Treatment Plant, Nerang
- Mt Crosby East Bank, Mount Crosby
- Mt Crosby West Bank, Mount Crosby
- Mudgeeraba Water Treatment Plant, Mudgeeraba
- Noosa Water Treatment Plant, Cooroy
- North Pine Water Treatment Plant, Joyner
- North Stradbroke Island Water Treatment Plant, Minjerriba, North Stradbroke Island
- Petrie Water Treatment Plant, Petrie
- Point Lookout Water Treatment Plant, North Stradbroke Island
- Rathdowney Water Treatment Plant, Rathdowney
- Runcorn Water Treatment Plant, Runcorn
- Somerset Dam recreation Water Treatment Plant, Lake Somerset
- Somerset Dam township Water Treatment Plant, Lake Somerset
- South Maclean Water Treatment Plant, South Maclean
- Sunnybank Water Treatment Plant, Sunnybank
- Warrill Valley Moogerah Dam Water Treatment Plant, Boonah region
- Woodford Water Treatment Plant, Woodford
In addition to these Water Treatment Plants, Seqwater will operate the Wyaralong Dam Water Treatment Plant once the Wyaralong Dam and associated infrastructure is completed.