Oldcastle Infrastructure septic tanks are safe, reliable containment vaults utilized to naturally treat and separate wastewater. The tanks are watertight and suitable for moderate to traffic loading conditions, and environmentally friendly. With standard and customizable options, these tanks are the optimal choice when municipal sewers are not an option. Available features include grade rings & risers, lifters, pulling irons, drainage sumps, as well as knockouts to best fit your project needs.