Basement water in Des Moines has a few local causes that are worth knowing before you hire anyone. The City recommends that sump pumps be connected to a City storm sewer and never to a sanitary sewer, where a storm sewer is available, so ask any installer where the discharge line will go. The City's Private Property Protection Program offers subsidies for work such as disconnecting roof leaders from the sanitary sewer service and newly installing a backwater valve, so ask whether the job you are quoting could qualify before work starts. The city's history also matters: in the Great Flood of 1993, Raccoon River floodwaters inundated downtown Des Moines, and the National Weather Service says the water supply to a quarter-million people was cut off. Insurance is a separate question. The Iowa Insurance Division says water and sewer backup coverage are different from flood insurance and need special endorsements, so check your policy before you pay for repairs. Ask for a written quote that names the discharge point and the equipment.