Island County, WA Landscaping Rules: Composting (2026)
Key Facts
- Governing section
- Island County Code § 8.08B.150
- Food-waste container cap
- 10 cubic yards total, permit-exempt
- Yard-debris pile cap
- 40 cubic yards on-site at any time
- Off-site worm-bin feedstock cap
- 1,000 cubic yards on-site
- Enforcing agency
- Island County Health Department
- Unpermitted facility penalty
- $1,000 per day
Summary
In unincorporated Island County, small-scale composting is exempt from the county's solid waste handling permit under Island County Code § 8.08B.150, but only within hard caps: containerized food-waste composting tops out at ten cubic yards total, and open-pile yard-debris composting at forty cubic yards on-site at any one time. Exceed those limits, or ignore odor and vector controls, and the Health Department can require a full solid waste permit.
c.Composting of Type 1 or Type 2 feedstocks with a volume limit of forty (40) cubic yards of material on-site at any time. Material on-site includes feedstocks, partially composted feedstocks, and finished compost;d.Composting of food waste generated on-site and composted in containers designed to prohibit vector attraction and prevent nuisance odor generation. Total volume of the containers shall be limited to ten (10) cubic yards or less; ... b.Protect surface water and groundwater through the use of best management practices and all known available and reasonable methods of prevention, control, and treatment as appropriate. This includes, but is not limited to, setbacks from wells, surface waters, property lines, roads, public access areas, and site-specific setbacks when appropriate;c.Control nuisance odors to prevent migration beyond property boundaries;d.Manage the operation to prevent attraction of flies, rodents, and other vectors;
Full Breakdown
2 carves out several categorically exempt activities so most residents composting on their own property never need a Health Department solid waste permit. A homeowner who composts food waste generated on-site in containers built to prohibit vector attraction and prevent nuisance odor generation stays exempt as long as the containers hold ten cubic yards or less combined. Anyone composting Type 1 or Type 2 feedstocks in open piles is capped at forty cubic yards of material on-site at any one time, counting feedstock, partially composted material and finished compost together.
Vermicomposting of material generated on the same property carries no listed volume cap, though vermicomposting fed with off-site feedstock is capped at 1,000 cubic yards on-site. 050, protecting surface water and groundwater with setbacks from wells, surface waters, property lines, roads and public access areas, controlling nuisance odors so they do not migrate past the property line, and managing the pile to prevent attracting flies, rodents and other vectors. 080, going through the same application, fee and inspection process as a commercial composting facility.
Violations & Fines
Composting that outgrows these exemptions without a permit is enforced the same as any other unpermitted solid waste handling activity under section 8.08B.440: the health officer can order immediate cessation, set an abatement schedule, and seek judicial abatement if that schedule is missed. Solid waste handling facility or permit violations carry an administrative penalty of $1,000 per day, and each day of continued noncompliance is a separate violation.
Frequently Asked Questions
Do I need a permit to compost at home in unincorporated Island County?
What happens if my compost pile gets too big or smells?
Can I compost material brought in from off my property?
Sources & Official References
Other rules in Island County
Compare Island County to another location·View the Washington landscaping rules overview
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