The City and County of Honolulu will increase sewer service charges beginning July 1. It's part of a multi-year rate increase which came out of a 2012 bill. Currently, a single family or duplex pays a $65.76 monthly base fee and a usage charge of $3.93 per 1,000 gallons. Beginning July 1, the charges will increase by four-percent for fiscal 2015 to $68.39 and $4.08 for the usage charge per 1,000 gallons. The city says the increased fees are needed for capital improvements and other upgrades in the system.