Testing for Well & Septic

Jim writes: Do you need a perc test if there is sewer hookup at the road? Also, is there such a thing as a well test also?

Steve Bliss, of BuildingAdvisor.com, responds: There is no need for a perc test if you are tying into a municipal sewer system. There will be a cost to tie in, however, so you might want to check with the town for an estimate of the hookup fees. You may also need to pay for some of the trenching and piping to your house.

Unfortunately, there is no similar test for a well other than to drill a well and then test the well yield and water quality. Experienced local well drillers can usually give you a pretty good idea of the typical well depth, yield, and water quality in your area. You can also pay a hydrologist  for a more scientific answer based on his knowledge of the local aquifer and geology, and any groundwater maps that may exist for your area. You may also be able to get this help for free or a nominal fee from a local or state dept. of water resources.

In some areas, the availability of water is highly predictable, in others it is less so. In addition to evaluating the likelihood of finding good water at a reasonable depth, drillers and hydrologists can help you identify the most promising spots for siting the well.

You should make your offer contingent upon your getting satisfactory answers regarding water availability, yield and quality, and well depth. However, there are rarely guarantees given in the well-drilling business, only probabilities. If you are not comfortable with taking the risks associated with well drilling, then look for a parcel that already has a well in place. If the yield and water quality has already been tested and documented, then you are in good shape. Otherwise, you will want to make testing the well yield and quality a contingency of your offer.

Also, if you buy a piece of land with a “well installed,”  you may still need to pay for the pump, well “development,” trenching, plumbing lines, and pressure tank. This process of completing the well system – which may cost as much as the drilling itself.

Related links:     Well Drilling Basics      Well Drilling Q&As     Perc Testing



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