reduce usage of water.

 We have been having too much rain, and our council urges the citizens to reduce the water usage.

I am married to a water engineer and professor. He explained when there is too much rain, the rain brings down a lot of silt, and the water treatment plants can't cope.

http://ourauckland.aucklandcouncil.govt.nz/articles/news/2017/03/aucklanders-urged-to-reduce-water-use-by-20-litres-per-day/