(1) On a pilot project basis, the use of water for domestic use in clustered residential developments is exempt as described in subsection (2) of this section from the permit requirements of RCW 90.44.050 in Whitman county. The department must review the use of water under this section and its impact on water resources in the county and maintain information regarding the pilot project on its website.

(2) For the pilot project, the domestic use of water for a clustered residential development is exempt from the permit requirements of RCW 90.44.050 for an amount of water that is not more than one thousand two hundred gallons a day per residence for a residential development that has an overall density equal to or less than one residence per ten acres and a minimum of six homes.

(3) No new right to use water may be established for a clustered development under this section where the first residential use of water for the development begins after December 31, 2015.