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CITY, N.D. (AP) Water restrictions were lifted for Valley City residents. Officials say Valley City is no longer pumping raw sewage into the Sheyenne River after a master lift station plug was broken during maintenance. The sewage flow into the river was halted late Friday afternoon.

City officials say the master lift station holds all of the city’s sewage and pumps it into the sewage lagoon. During routine maintenance the plug to the master lift drain failed and inundated the station. Officials estimate sewage was pumped into the river for about 30 hours before the problem was fixed on Friday.

Valley City Mayor Bob Werkhoven says the cause of the master lift station break-down is a major concern and will be investigated. Something in the system failed and it shouldn’t happen again.