Affiliate & Advertising Disclosure

Last updated: November 2026

At Septic Tank Calculator, transparency with our readers is our highest priority. This disclosure explains how this website earns revenue and provides details on our affiliate partnerships.

Amazon Associates Program Disclosure

septictankcalculator.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for websites to earn advertising fees by advertising and linking to Amazon.com and affiliated sites.

"As an Amazon Associate I earn from qualifying purchases."

How Affiliate Links Work

When you click on certain product links on this website and subsequently make a purchase on the merchant's site, we may receive a small commission. This occurs at absolutely no additional cost to you. The price you pay remains exactly the same whether you use our link or navigate to the merchant directly.

Editorial Independence

Our calculation engines, state code sizing tables, and guidance articles are built on public engineering standards (such as the EPA Onsite Wastewater Treatment Manual and verified state health department administrative codes). We only reference products, equipment, and supplies (such as effluent filters, riser covers, and enzyme maintenance packs) that are relevant and useful to septic system owners and DIY maintainers.

Questions

If you have questions regarding our affiliate disclosures or product mentions, please reach out via our contact page.