Swimmers, divers, surfers and others can feel good about the water quality at most of San Diego County’s beaches, according to Heal the Bay’s 26th annual Beach Report Card released Thursday.

While above average rainfall pulled scores in the region down modestly during the past year, 97 percent of the area’s monitored beaches received top marks in summer months — when beach visitorship peaks. At the same time, sewage spills remained a black mark. The county experienced 22 such events in the past year, including four incidents that each spilled at least 10,000 gallons, the report said.