Rayne's Sand & Gravel, Inc. is certified by the Maryland Department of the Environment as a septic system installer. Should you need an existing system upgraded or a brand new system installed, we can assist. Rayne's is also a supplier of certified mound and trench sand, as well as washed stone, suitable for septic system installation. We are a supplier for many of the septic installers in the area. Call and speak with one of our staff regarding septic systems and we will be glad to help!