Arkansas City residents east of the Walnut River can expect reductions in pressure for at least a couple of hours Tuesday due to water system maintenance. The water pressure reduction is due to needed maintenance at the East Chestnut Booster Station, which pumps water across the East Chestnut Avenue bridge to customers in the eastern part of town. Lower pressures should occur mainly between the hours of 9 a.m. and 4 p.m. Further updates will be provided as necessary.