Big Horn County, the town of Thermopolis and a conservation district want the DEQ to explain to their communities its plan to allow discharges of pollutants into Boysen Reservoir and give them time to respond.
DEQ would let millions of gallons of tainted water flow into reservoir above the Wind River Canyon, but the agency says water quality will be preserved.
Drainages hold 108 percent of median water content statewide following first measurement of spring.
Governor and others question measure that would require Senate approval of water supervisors, saying their roles are guided by technical and legal parameters.
Omnibus water bills may help municipalities, advance New Fork Lake dam project and resolve a flap over Gillette water project that rural residents believe disrupted their domestic wells.