Well Water Test Calculator (Free)
Water Quality

Well Water Test & Treatment Cost Calculator

Free well water test cost calculator. Comprehensive testing, treatment systems, pump replacement, pressure tank — with bacteria, iron, and PFAS guidance.

Enter your inputs and we'll show you the estimated exposure, severity, urgency, and recommended next steps.

About this calculator

Private well water testing is mandatory before any rural home purchase. The basic county test misses 80% of contaminants — including PFAS (forever chemicals), volatile organic compounds, and heavy metals. This calculator estimates comprehensive testing plus any treatment system needed.

Free calculator vs full Buyer's Leverage report

What this calculator shows you

  • Estimated repair exposure range
  • Severity, urgency, and negotiation relevance for this issue
  • General next-step checklist
What a full Buyer's Leverage report unlocks
  • Issue-by-issue inspection analysis across your whole report
  • Total repair exposure with prioritization
  • Negotiation strategy + seller-credit guidance
  • Repair timeline and specialist recommendations
  • Related-issue patterns the inspector may have missed
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Frequently asked questions

What does a comprehensive well water test cover?
40+ analytes including: total coliform & E. coli, nitrates/nitrites, heavy metals (arsenic, lead, mercury), VOCs, PFAS (forever chemicals), pesticides/herbicides, radon in water, sodium, fluoride. $400-1,200.
Is well pump replacement expensive?
Shallow well: $1,000-2,500. Deep well: $1,800-5,500 (requires pulling 100-400 ft of pipe). Submersible pumps last 8-15 years; jet pumps 10-20 years.
Are PFAS forever chemicals really a problem?
Yes. EPA finalized first-ever PFAS drinking water rules today. If your well tests positive (4 parts per trillion or higher for PFOA/PFOS), you need either point-of-entry treatment or to walk away. Treatment systems start at $3,500.
Can sellers refuse a comprehensive well water test?
Sometimes — but you can decline to close. If they push back, request the test as a credit ($400-1,200 is nominal). Refusal to allow ANY test is itself a red flag.
Calculator results are estimates for educational planning only. Actual repair costs, negotiation outcomes, and professional recommendations vary by property, location, contractor, inspection findings, and market conditions. Buyer's Leverage does not replace licensed inspectors, contractors, engineers, real estate agents, attorneys, lenders, or insurance professionals.
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