Each time we have a heavy rain, rainwater gets into the sanitary sewer system, causing sewage overflows in different parts of the city, sometimes inside people's homes.
(we; have; a heavy rain, rainwater gets into the sanitary sewer system, causing sewage overflows in different parts of the city, sometimes inside people's homes; T:Each time) (rainwater; gets; into the sanitary sewer system) (rainwater; causing; sewage overflows in different parts of the city)
we rainwater rainwater
have gets causing
a heavy rain, rainwater gets into the sanitary sewer system, causing sewage overflows in different parts of the city, sometimes inside people's homes T:Each time
into the sanitary sewer system
sewage overflows in different parts of the city