On April 22, 1993, Governor Symington signed into law Senate Bill 1425 – The Groundwater Replenishment District Act. This Act created a groundwater replenishment authority to be operated within the CAWCD’s service area in order to assist members with meeting Assured Water Supply rules. The Central Arizona Groundwater Replenishment District (CAGRD) has the responsibility to utilize renewable water supplies to replenish the aquifer for excess groundwater used by its members. Membership in the CAGRD is voluntary, and all costs are to be paid by its members. The CAGRD is governed by the CAWCD Board of Directors.