New financial incentives are available for homeowners who want to replace water-hungry lawns with more efficient landscaping, the San Diego County Water Authority announced Wednesday. The agency has $500,000 available from grants awarded by the state Department of Water Resources, and an upcoming grant is expected to add another $600,000. Qualified applicants can receive up to $1.75 per square foot toward eligible project costs for upgrading 500 to 3,000 square feet of existing turf areas, according to the Water Authority.