While reclaimed water is treated wastewater, graywater doesn’t contain any solid waste and doesn’t undergo any formal treatment process. But, using graywater to irrigate vegetable gardens could still introduce pharmaceuticals and trace contaminants. Andrew Sansom, the Executive Director of the Rivers Systems Institute at Texas State University, says these health risks have prevented large-scale adoption of graywater recycling in Texas.
“The issue is more problematic on a residential level because there’s concern that children play in sprinklers. And so you want to be very, very careful about potentially exposing little children to water that might cause them to contract the flu, or some other problem of that nature,” said Sansom in an interview with StateImpact.
And if enough people use graywater recycling, water flows from neighborhoods to treatment plants could be reduced. Most sewer systems require a certain volume of water to function properly. So, decreases in flow volume could create some blockages and motor problems.
Sounds like the usual FONEY excuses for not being better stewards of water. Don't bother saying a prayer for Texas, either. It didn't work the last time.