Probably a grey area depending on region and
regulations, but now that I am back living onboard at Subic Marina I am amazed at the stench from full
grey water holding
tanks being pumped out in the evenings.
Everybody uses the excellent shore side toilets, but all the new multis hold their
shower and
Galley water for a few days, then
pump out copious amounts that has not aged well!
Before my
refit, I had the same and the showers/ sinks would all
pump into
holding tank that with 5 onboard wold be full in about 6 days.
You could definately smell it!
So I decided to put Y-Valves in and divert to direct discharge.
Now, the small amount of "fresh"
shower water pumps quietly into the marina, with no stench at all.... I like it!
Another plus is that I moved the 2 Whale 320 pumps to the
engine room where I have a bildge pump manifold.
One of them now has a second 3/4" suction hose with a Y- valve that goes into my deep
engine well.
When
washing down, it is a perfect wet vacumn.
Why hold
grey water for days, rather than direct discharge, if allowed?