J.P. Nilsen excavating has been serving Westchester County, Putnam County, and Dutchess County since 1978 along with Connecticut as a fully licensed and insured Excavation and Septic contractor to perform Septic Repairs, Install new Septic Systems, sewage treatment systems, excavate foundations for new constructions and additions of all sizes, trenching for Utility's, Drainage for house including footing and leader drains, yard drains and driveways catch basins, item 4 and gravel driveways, new lawns, removing stumps, deliver material such as gravel, sand, top soil and mulch.