TP 577 of Oulaisten kt
Oulainen, Pohjois-Pohjanmaa
TP 577 of Oulaisten kt is an advanced wastewater treatment plant in Oulainen, Pohjois-Pohjanmaa, Finland, serving 4,400 people. It discharges treated effluent into local waterways, contributing to the protection of the Bothnian Bay catchment.