Nonnegotiable rules
- Symptoms do not prove a contaminant.
- Regional evidence does not prove an individual well condition.
- Health and regulatory claims require authoritative sources.
- Manufacturer claims are labeled as manufacturer evidence.
- Commercial relationships do not determine rankings.
- We never invent hands-on testing.
Corrections
Material corrections explain what changed and when. Review dates move only after meaningful review. Use the contact page.
Commercial separation
Commercial guidance must explain fit, limits, testing, installation, ownership, and disclosure. No-purchase can always win.