Why is rainwater entering the sewer system? If should be watering the land and vegetation, providing a habitat for wildlife, as nature intended.
if its an old city, they had a combined system
many older cities have this issue
normal rains dont pose a big deal
heavy rains for days, or short very intense rains, can cause real problems, though
Former practice was to use the sanitary sewers for storm water runoff, which occassionally led to the system getting overwhelmed and discharging untreated effluent. Modern practice is to have separate sanitary and storm water systems, with only the first portion of storm water treated. Unfortunately, Sanford has not fully modernized its system and increased its capacity enough to accommodate recent growth.