Manteca is preparing to spend $350,000 as part of an ongoing effort to avoid spending more than $1 million annually to meet tighter federal arsenic levels in drinking water. The City Council last week put a call out for bids for the London Avenue and Austin Road metering facilities on the South County Water Project water transmission line that runs along Lathrop Road. The project involves installing valves, utility vaults, flow meters, programmable logic controllers, radio communications and appurtenances at the two locations.