Underground sewer/water/gas: S&K Plumbing specializes in the repair and installation of underground plumbing services such as sewer and septic lines, water service and supply/distribution lines, natural gas and propane supply and distribution lines. S&K is also capable of installing and repairing underground structures such as foundations, vault and lift stations, and flood control systems. All employees are OSHA excavation trained and certified. (29 CFR 1926)