Boat sewage, whether treated by a marine sanitation device (MSD) or not, contains nutrients. Although one flush from one head on one boat may not add a significant amount of nutrients to the water, the effects of nutrient over enrichment are cumulative and boat sewage can present a particular problem in areas of water that do not flush well and where boats tend to congregate (such as marinas and mooring areas).
Raw or poorly treated sewage also contains harmful bacteria which is a potential source of disease transmission to swimmers and others who come into contact with contaminated waters. Also, human consumption of shellfish contaminated with sewage can result in serious illness.
- Use onshore restrooms when docked.
- Report broken pumpout stations to the Maryland Department of Natural Resources at 410-260-8772 or at [email protected]
- Choose enzyme-based deodorizers for waste in holding tanks or portable toilets.
- Avoid holding tank products that contain quarternary ammonium compounds (QAC) and formaldehyde. These products may disrupt sewage treatment plants.
- Share this information with another boater.
- Take the Clean Boater Pledge to join other Boaters for the Bay and all our waterways!