Head Waste System
WHAT IS THE LAW?
Congress enacted the Clean Water Act of 1972 (amended in 1987). This law
addresses a wide spectrum of water pollution problems, including marine sewage from boats in navigable
U.S. waters including coastal waters up to three miles offshore. The law further provides for "no
discharge" by boats operated in enclosed lakes and reservoirs or in rivers not capable of interstate
navigation. States may apply to the EPA to have certain other waters declared "no discharge zones" if
discharge of treated sewage would be harmful. In short, boats with installed toilets must have an
operable Coast Guard approved Marine Sanitation Device (MSD) designed to either hold sewage for
pump out ashore or for discharge in the ocean beyond the three mile limit, or to treat the sewage to
Federal standards prior to discharge.
All boats built since 1977 with installed toilets must have an operable approved type I, II or III MSD.
Since 1980, all boats (including those built before 1977) with installed toilets must have an operable MSD.
Both the U.S. Coast Guard and the Natural Resources Police can enforce MSD requirements.
Check with your local authorities, Coast Guard, local marina or your dealer for the rules and/or laws that
may apply specifically in your area.
Porta-Potti with Filler Board
A porta-potti with a 2.8-gallon holding tank comes standard with the 25 Walk. With the filler board
installed over the porta-potti, this area converts easily into a sleeping berth. Before operating the porta-
potti head system, refer to the manual in your owner's packet supplied by the porta-potti manufacturer for
specific operating instructions. To operate the porta-potti system:
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Set the portable toilet on its front side so the cap on the holding tank is in a vertical
position. Remove the cap and add SeaLand brand holding tank deodorant following the
instructions on the deodorant container. Replace the cap firmly.
•
Before using: Set the portable toilet in the upright position and remove the cap located
on the right, rear side of the fresh water tank. Fill with fresh water just below the neck of
the fresh water inlet. Depress the bellows pump to add water to the bowl.
•
After using: To flush, open the slide valve by pulling out the handle and press the
bellows pump one or more times. After flushing, close the slide valve by pushing the
handle.
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Caution: Never add holding tank deodorant to the waste holding tank by pouring directly
into the toilet bowl.
Head with Dockside Discharge (Optional)
This optional head system includes the same type of porta-potti described above but it has a 3.0-gallon
holding tank. Follow the same instructions as shown above to operate the porta-potti system.
To utilize the dockside discharge feature, first locate the waste outlet. It is a stainless steel fitting, labeled
waste and it is located amidships on the port gunwale. Twist the waste outlet cap to open the fitting and
insert the hose provided by the marina into the waste outlet to connect to your marina’s dockside service
facilities. Follow the instructions provided by the marina to operate their equipment.
Warning: Waste in the holding tank can form methane, an explosive gas. Use suitable
precautions when any maintenance is done to the sanitary system.
Sea Water System
Raw water for the baitwell and raw water washdown systems comes through the seacock, to the
applicable pump and then to the baitwell aerator head and/or raw water washdown outlet. Before turning
on the baitwell or washdown pumps from the helm, check to be sure that the seacock is in the open
