DUBLIN -- Household water bills in Dublin and parts of San Ramon will increase $1.35 per month as result of rate changes given final approval by a water board.

The new rates go into effect July 1.

The Dublin San Ramon Services District board agreed unanimously Tuesday to indefinitely suspend collection of a $4.50 per month temporary infrastructure surcharge that was imposed on bills four years ago during difficult financial times.

The decrease, however, was only one aspect of rate changes approved this year. After a study of its rate structure, the board last month approved increases in other elements of water bills.

Taken together, the changes add about $1.35 per month onto the average household's bill, from $53.18 to $54.53 a month.

Dublin San Ramon officials said the rate changes are aimed at collecting a larger share of district revenues from fixed charges, providing a more reliable revenue stream to cover district costs and bolster the district's credit rating.

The district supplies tap water to some 62,000 people in Dublin and the Dougherty Valley in San Ramon.

Contact Denis Cuff at 925-943-8267. Follow him at Twitter.com/deniscuff