No idea. I'm more about less waste though, so that and the home renovation was what sold me. Self-install so the cost was relatively low. http://www.hcsa.us/fi

No idea. I'm more about less waste though, so that and the home renovation was what sold me. Self-install so the cost was relatively low. http://www.hcsa.us/files/What-does-my-toilet-really-cost-me.pdf http://www.hcsa.us/files/What-does-my-toilet-really-cost-me....