Best NSF/ANSI 41 Certified Composting Toilets

Last updated: October 31, 2026

Toilets certified to the composting toilet standard that many health departments ask for.

Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.

Best NSF/ANSI 41 Certified Composting Toilets: Composting

  1. Sun-Mar Excel NE
    #1 of 43.6Full review

    For off-grid cabins that need a certified toilet with no power; plan for a drain line and a tall vent.

    Sun-Mar $1,825
    $1,825
    2 peopleNone neededYes
  2. Sun-Mar Excel
    #2 of 43.1Full review

    For cabins and homes on grid power that need a certified toilet for a full time household; its power draw rules out vans and small solar systems.

    Sun-Mar $2,040
    $2,040
    3 people120VYes
  3. Sun-Mar Spacesaver
    #3 of 42.8Full review

    For a small cabin bathroom on grid power with one full time user or occasional guests, where a certified toilet is required.

    Sun-Mar $1,935
    $1,935
    1 people120VYes
  4. Sun-Mar Compact
    #4 of 42.8Full review

    For a single full time user or a weekend cabin on grid power that needs a certified toilet with a lower profile than the Excel.

    Sun-Mar $1,975
    $1,975
    1 people120VYes