Is Composting Toilets Legal in Delaware? (2026)
Partially — Composting Toilets are legal with restrictions in Delaware as of 2026.
Law changed in 2024: A 2024 bill allowing for human composting as a burial alternative passed the House, but this does not affect composting toilet regulations. No significant changes have been made to the toilet regulations themselves.
Quick Answer
Composting toilets may be used in Delaware but typically only as a supplemental system alongside a conventional toilet. A 2024 bill allowing for human composting as a burial alternative passed the House, but this does not affect composting toilet regulations.
What the Law Says
Allows composting toilets in Delaware only as supplemental systems alongside conventional toilets, requiring county health department approval and submission of a detailed operation plan before installation. Unauthorized installation or non-compliance with approved plans may result in code violations.
— 7 DE Admin. Code 1301 § 2.5.1
| Category | Details |
|---|---|
| State Plumbing Code | May require conventional toilet as primary; composting as supplemental |
| Permit Requirements | Legal to sell |
| Code Violation Penalties | Installation without permits may result in code violations. |
| Pending Legislation | None known |
A 2024 bill allowing for human composting as a burial alternative passed the House, but this does not affect composting toilet regulations. No significant changes have been made to the toilet regulations themselves.
Enforcement Reality
Enforcement is managed by the Department of Natural Resources and Environmental Control (DNREC) on a case-by-case basis. Approval requires submitting a detailed operation plan before installation.
The most common mistake is installing a unit without prior approval from DNREC, as there are no standard pre-approved systems. Failure to adhere to the submitted operational plan is also a violation.
Local Exceptions
None identified. State law applies uniformly across Delaware. Local ordinances may still vary — check with your city or county government for any additional rules.
Bottom Line
Composting Toilets are legal with restrictions in Delaware. This activity is permitted, but specific conditions apply. Violating those conditions can result in fines or criminal charges. Read the rules carefully and consult an attorney if unsure.
Delaware vs. the Rest of the US
Across the US, installing a composting toilet is fully legal in 20 states, restricted in 30, and illegal in 0. Delaware falls in the RESTRICTED category.
View the full 50-state map →Neighboring States
Laws change at state lines. Here is how bordering states compare on Composting Toilets:
Frequently Asked Questions
Is installing a composting toilet legal in Delaware?
What are the restrictions on installing a composting toilet in Delaware?
What mistakes do people make with installing a composting toilet in Delaware?
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Reviewed by cross-referencing the cited state statute against current legislative databases and regulatory publications.
Sources & Verification
This page was reviewed by Ethan Harper by comparing the legal status against the cited state statute. AllowedHere is an informational resource and does not provide legal advice. Consult a licensed attorney for guidance specific to your situation.
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