ITT we discuss the politics of sewers and post anything related to sewers
Here's a really cool map showing sewer outfalls and their drainage areas in New York City. Did you know that 70% of New York City has a "combined sewer system", and old type of sewer system where stormwater from roofs and streets runs in the same pipes as the sewage. Such systems are designed to overflow during heavy rainfall, which means that instead of the sewage/stormwater mix going to the treatment plants, a percentage of it goes straight into the waterways, through outfalls such as those shown in the map. openseweratlas.tumblr.com/wetweathermap en.wikipedia.org/wiki/Combined_sewer
>Most of the fatberg discovered in Whitechapel in London in 2017, weighing 130 tonnes (130,000 kg; 140 short tons) and stretching more than 250 metres (820 ft), was converted into biodiesel. en.wikipedia.org/wiki/Fatberg
>But building separate sewers in New York would be prohibitively expensive. Instead the city is constructing huge underground reservoirs where the overflow can be held until water levels subside and the waste can be safely pumped into the treatment plants without spilling. gothamgazette.com/environment/2005-the-sewer-system
one point i know for my state is the importance of inflow and leakage of sewer pipes. ground water going into city sewers means loads of water that has to go to treatment plants as well as less groundwater which is precious here.
