From 2013 to 2023, the urban wastewater treatment inflow in Finland exhibited fluctuations. Starting from 243.2 million cubic meters in 2013, it peaked at 286.0 million cubic meters in 2015, then generally declined with slight variations before stabilizing around 277.5 million cubic meters in 2023. Year-on-year variations suggest volatile patterns: high growth in some years, such as 2014 and 2019, and declines in others, such as 2016 and 2018. The CAGR observed over various periods reflects these fluctuations, generally settling around a modest average.

Future forecasts indicate a steady but gradual increase in the inflow. By 2028, the value is expected to rise to 284.1 million cubic meters, marking a cautious growth trend. The forecasted 5-year CAGR of 0.38% underscores this moderate increase, expecting a cumulative 1.9% growth over this span.

Future trends to watch for include:

Impact of climate change on water availability and treatment needs
Technological advancements in wastewater treatment processes
Legislative changes affecting environmental standards and water treatment requirements