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===Sewage Treatment Plant===
: ''Main article: [[Sewage Treatment Plant]]''
Sewage treatment plant collects and treats your city 's sewage and produces no ground pollution. The plant returns treated [[water]] back to the city's water table. As long as the sewage treatment plant is functioning properly, it will not produce any ground pollution. It will generate ground pollution if its overcapacity, understaffed or under powered. *Be sure to bulldoze your old sewage outflow pipes once sewage treatment plant is up and running.
==Sewage Maps==