Three areas move up to A-plus and one more reaches an A. City manager suggests street sweeping, sewer filtration among infrastructure that helped.

Newport Beach and surrounding coastal communities this week received the kind of report card that would make any parent proud: nearly straight-A’s.

From Newport Bay to Crystal Cove, area beaches not only scored high in water quality on Heal the Bay’s annual report card, many fared better than last year.

Among the many popular spots that improved from an A to an A-plus this year are the Balboa Pier, the Wedge and Crystal Cove at Pelican Point.

“I think that this is representative of a trending of better practices from everyone, from residents to our own staff,” Newport Beach City Manager Dave Kiff said.

The grades can be viewed at brc.healthebay.org/default.aspx?tabid=2.

Kiff pointed to the city infrastructure, such as street sweeping and sewer filtration systems, as contributing to the consistently high marks.

Overall, 94% of waters tested in Newport Beach, Huntington Beach, Laguna Beach, Seal Beach, Dana Point and San Clemente received an A or higher.

The End of Summer Beach Report is based on data collected from Memorial Day to Labor Day. The grades are based on a point system in which the safest beaches for swimming have the highest marks.

“Generally speaking, Orange County and San Diego County have some best water quality in the state,” said Mike Grimmer, Heal the Bay beach report manager. “It’s a trend that we see over and over again each year.”

The high marks come in the wake of two Newport Beach sewage spills earlier this year. In May, 1,000 feet of beach at the Balboa Pier was closed for two days. In June, the beach between Upper Newport Bay to the Newport Dunes was closed for four days after 54,700 gallons of sewage was spilled.