The Green Valley News has reported on concerns raised by local water companies and environmental groups about Arizona HB2617, a bill that would prevent any state laws or rules to be more restrictive than federal requirements. The Community Water Co. of Sahuarita is quoted as worrying about their ability to prevent potential sulfate plumes from mines.
There are a lot of complexities to the bill and the first hearings have been packed, but mostly with supporters. It looks like it may be heating up.