After two years of drought, Gov. Gavin Newsom remains reluctant to put limits on statewide water use. His administration, however, is looking to take a first step. Next month, the State Water Resources Control Board is expected to adopt temporary prohibitions on outdoor water practices, including hosing down driveways, filling up decorative fountains and watering lawns within 48 hours of rain. A violation of these rules would carry the threat of a $500-a-day fine.