Aquatic Invasive Species
Maine AIS
Sticker Requirements 2026
Aquatic invasive species sticker and watercraft inspection requirements for Maine boaters. Maine has a robust AIS prevention program but does not currently require a paid AIS sticker. Maine law requires boaters to drain all water from boats and equipment before leaving any water access site. Watercraft inspections are available at boat launches on many popular lakes, particularly in summer. The state focuses heavily on voluntary compliance and education for Clean, Drain, Dry protocols.
Inspection Stations Available
2026 AIS Requirements Quick Facts
Verified 2026
Resident Sticker
N/A
No sticker required
Nonresident Sticker
N/A
Check agency for current fees
Inspection?
Not Required
Stations available at ramps
Noncompliance Fine
Up to $1,000 for transporting invasive species
For violating AIS requirements
Step-by-Step
How to Comply with AIS Requirements in Maine
Follow these steps to stay compliant with Maine's aquatic invasive species regulations:
1
Check Sticker & Inspection Requirements
Maine does not currently require a mandatory AIS sticker or inspection program. However, all boaters are strongly encouraged to follow Clean, Drain, Dry practices.
2
Purchase Your AIS Sticker (If Required)
No paid AIS sticker purchase is required in Maine at this time. Check back annually as state requirements can change.
3
Practice Clean, Drain, Dry
Before leaving any boat launch — and before launching on a new water body — clean all visible aquatic plants and debris from your boat, trailer, and equipment. Drain all water from bilges, livewells, bait buckets, motor, and other water-holding compartments. Allow the boat to dry for at least 5 days before launching on a different water body, or use a high-pressure, hot-water wash.
4
Cooperate with Inspection Stations
Maine operates watercraft inspection stations at launch sites and on roadways. When you encounter an inspection station, stop and allow the inspector to check your boat. Inspections are typically free and quick — usually under 10 minutes. Refusing an inspection can result in a fine.
Noncompliance fine: Up to $1,000 for transporting invasive species.
Requirements
Maine AIS Compliance Requirements
Maine law requires all boaters to drain all water from boats, motors, and livewells before leaving any water access. It is also illegal to transport aquatic plants, animals, or other matter from any inland water.
Source: Maine Department of Environmental Protection (www.maine.gov).
Requirements verified 2026. Always confirm current AIS requirements directly with the agency before launching.