Washington
For Washington, testing required at sale? is In most counties when you buy or sell a home with a private well, the county health or planning department, or the lending institution involved, may require the seller to provide water-sampling results to show the water is safe to drink; who tests / pays is the seller, verified against its source on 2026-08-19.
- State
- Washington our reading
- Testing required at sale?
- In most counties when you buy or sell a home with a private well, the county health or planning department, or the lending institution involved, may require the seller to provide water-sampling results to show the water is safe to drink verified
- Who tests / pays
- the seller verified
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
If you own a private well, you are responsible for testing your own water. In most counties when you buy or sell a home with a private well, the county health or planning department, or the lending institution involved, may require the seller to provide water-sampling results to show the water is safe to drink. Contact your local county health or planning department for information on the requirements and the testing needed.
— doh.wa.gov, retrieved 2026-08-19
Source
- doh.wa.govhttps://doh.wa.gov/community-and-environment/drinking-water/contaminants/testing-your-water