By Paul McMahon · Broker, eXp Realty · License 124611 · 2026-09-29
Outside the Valley's city water and sewer footprints, homes run on private wells for water and septic systems for waste. These are not scary, and they are not optional to understand: they are the difference between a carefree country home and a surprise $10,000-plus repair. The goal is simple: never fall in love with a property before you know how its systems actually perform.
The well: flow, quality, and history
A well test answers the questions that matter. Water quality testing checks for bacteria and contaminants, and a flow test confirms the well actually produces enough water for the household, which matters most for big families, irrigation, and horses. Buyers should also ask for the well log and maintenance history: how deep it is, when it was drilled, and whether it has required repairs. In drought summers, flow is the detail that keeps the house livable.
The septic: condition, capacity, and drainfield
A septic inspection goes beyond pumping. The inspector evaluates the tank, baffles, and the drainfield, where the treated wastewater actually disperses. Older systems fail on undersized drainfields, and failed systems mean expensive repairs or a full replacement. County health departments keep records on many systems, and a good septic inspection with dye testing tells you what the paperwork cannot.
The right order to do this in
- 1
Ask Paul to pull the county well and septic records for the property before you write an offer.
- 2
Make well testing and a licensed septic inspection contractual contingencies, not afterthoughts.
- 3
Budget for testing, and use the results to negotiate price or seller repairs before closing.
"A well and a septic system are not deal-breakers. They are due diligence. Test them, inspect them, understand them, and acreage living is pure joy."
Paul builds well and septic reviews into every acreage transaction, and he works with inspectors who know river-bottom property, glacial soils, and every quirk of Valley ground. If you are shopping Fall City or Carnation, start the conversation early so the testing is done before you get attached.
