Arlington Well Drilling is based in Arlington, in Snohomish County. This listing comes from Washington State license records; no company website was found, so it does not list specific services or a service area beyond the office county. Ecology’s driller search lists one water well operator at the company. L&I lists a contractor registration.
Ask the company directly which services it offers and where it works. Before hiring any well contractor, check its current Ecology and L&I license status using the links in the sources.