According to their Web site, "if these restrictions do not curtail current demand then mandatory water restrictions will be imposed."
While many residents of Cool Springs are complying with these voluntary restrictions, every green lawn tells a different story.
Cool Springs resident Mary White does not concern herself with anyone else.
"I'm not really worried about if they're complying," she told Nashville's News 2. "We're just compliant, but it is causing some of our trees to die and the grass is turning yellow."
White's sacrifice seems to be working, according to Mallory Valley Utility District General Manager Ansley Coode.
"Since we have implemented these voluntary restrictions, we have seen improvement in our storage facilities," said Coode. "If customers will continue to follow the voluntary irrigation restrictions, we can avoid implementing additional steps for curtailment of non-essential water use."
Mallory Valley Utility District serves parts of Brentwood and Franklin.