EduEdgeNow

Arkansas Composting Toilet Laws: What to Know for Off-Grid, Rural, or Tiny Home Living

/By Jericho

In the Natural State, plenty of people dream of getting off the grid, downsizing, or just living a little lighter on the land. Composting toilets offer a waterless, eco-friendly alternative to septic tanks, especially for cabins, tiny homes, or remote properties. But are they actually legal in Arkansas? Let’s break down the state’s rules—so you can plan your project without surprises.

Are Composting Toilets Legal in Arkansas?

Yes, composting toilets are legal in Arkansas, but with a few important caveats. Like most states, Arkansas has regulations about how human waste must be handled, mostly for public health and environmental reasons. That means you can’t just build a bucket toilet or DIY setup and expect the state (or your local health inspector) to approve it—especially if you want a certificate of occupancy or plan to sell your property someday.

Who Regulates Composting Toilets in Arkansas?

The Arkansas Department of Health (ADH) is in charge of all onsite wastewater disposal in the state. That includes septic systems, alternative systems, and composting toilets. County health departments and local building officials may have their own interpretations or added rules, so it’s always smart to check both state and local requirements.

When Are Composting Toilets Allowed?

Arkansas law generally allows composting toilets in the following situations:

  • Off-grid cabins or homes in areas with poor soils or high water tables where septic systems are impractical
  • Remote, recreational, or seasonal properties
  • Tiny homes, yurts, or RVs with no easy access to sewer or septic

However, composting toilets alone are not enough in most cases. Arkansas still requires a legal system for managing greywater—wastewater from sinks, showers, and laundry. Composting toilets only handle solid human waste.

Requirements and Permitting Process

  1. Start with the County Health Department:

    • Before you buy or install anything, contact your county’s health department or the ADH. They’ll tell you if a composting toilet is allowed at your site and what permits are required.
  2. Choose an Approved Composting Toilet:

    • Most health departments require you to use a commercially manufactured, NSF/ANSI Standard 41 certified composting toilet. Homemade systems are almost never approved unless you can prove they meet strict safety and performance standards.
  3. Apply for a Permit:

    • Submit your site plan, composting toilet specs, and a detailed greywater disposal plan. A soil test (“perc test”) may also be required to assess your site for a small leach field or alternative greywater treatment.
  4. Inspection:

    • After installation, an inspector may visit to ensure the composting toilet and greywater system meet all codes and are properly set up.

Greywater Requirements

In Arkansas, you cannot discharge greywater directly onto the ground, into a creek, or simply into a garden. It must go to an approved greywater system—usually a small septic tank, leach field, or engineered treatment unit. Your composting toilet permit will almost always be denied if you don’t address greywater legally.

Key Points from Arkansas Law

  • Composting toilets must be installed and maintained to prevent public health risks—no odors, leaks, or pest problems.
  • All solid waste and compost must be disposed of according to state and local guidelines. This may mean burial on-site (with permission), hauling to a landfill, or another approved method.
  • Setbacks from wells, property lines, and water bodies must be respected.
  • If you sell your property, you may need to show proof that your system was permitted and maintained.

Penalties for Not Following the Rules

Installing a composting toilet without permits or ignoring greywater requirements can lead to fines, stop-work orders, forced removal, or issues when you sell your property. Complaints about odor or unsanitary conditions can trigger inspections and enforcement.

Tips for Success with Composting Toilets in Arkansas

  • Start with your county health department—rules and enforcement vary from one county to another.
  • Use a certified, commercially made composting toilet for easier approval and maintenance.
  • Plan your greywater system alongside your composting toilet to avoid permit problems.
  • Keep records of permits, maintenance, and any inspections for resale or insurance needs.
  • Maintain your system regularly to avoid odor and pest issues.

Helpful Resources

Final Thoughts: Composting Toilets in Arkansas Are Doable—If You Follow the Rules

Composting toilets are a legal, eco-friendly solution for many Arkansas properties—but only if you get the right permits, use an approved system, and handle greywater properly. With a little research and planning, you can enjoy the benefits of off-grid or low-impact living without legal headaches. When in doubt, call your county health office before you build!