Not every property is on city water and sewer
Acreage outside a municipal service area may be on a private well, a septic system, or both, and rural water supply corporations serve parts of this area. That changes the work fundamentally. A septic problem is not a sewer problem, a well pressure issue is not a supply pressure issue, and the licensing and permitting involved can differ. Establish what you are connected to before assuming which trade you need.
