Smelly toilet - but it's a fresh water system

[PEJ]

I get a noticeable smell of rotten eggs when I flush the toilet. I know the usual suspect is sea water left in the intake pipe but I have a Sealine fresh water flush system.

Anybody know how that can happen? There is no smell in the toilet itself but you notice it around the boat. I was on the pontoon tying a fender when someone flushed the toilet and I got a really bad whiff of it then.

Any ideas?

 

[msimms]

We sometimes get that. Our holding tank vent is located next to the basin drain outlet. With the wind in the wrong direction the smell can find it's way in to the boat. Leaving the basin plug in resolves the problem.

One day I'll get around to extending the drain pipe so as to have a small water trap under the basin.

 

[CHI]

Hi
I have had this before on my S38 , also with a fresh water flush system.

Is your holding tank fairly full? If so , you will notice a smell around the vent pipe area

when the toilet is flushed.

 

[GSL]

My Sea Ray has a carbon filled filter on the waste tank vent pipe line, does the Sealine have this?

If the carbon gets wet it doesn't work and there is a bad smell when the toilets are flushed. Dismantling the filter, putting in new carbon (buy it from an Aquarium shop), refit the filter and the smells are gone.

The Heads on my boat are fresh water.

Graham

 

[carlton]

This can also happen when the vent is blocked (or partially blocked), often because the tank has been overfilled at some time leaving a piece of R-Swipe (or worse) high up in the pipe which subsequently stays there after the tank has been emptied.

Could be worth squirting some water down the vent pipe (assuming easy-ish access) to clear it just in case it's blocked, or dismantling and taking a look.

 

[Wiggo]

I know some will say nay, but Elsan Blue in the holding tank works wonders. And the pink stuff from the caravan shop in the flush water, assuming it's a separate tank from your domestic water tank.

 

[Who]

I had this problem last week.

I flushed a load of washing powder down and then went out to sea. Pumped it all out an hour later. (over half a packet went down)

Smell now gone !

 

[PEJ]

Thanks

Thanks for the advice, I'll check with Sealine about that filter.

It was fairly full but then I pumped it out, it was after I pumped it that I noticed the smell.

I did think about either emptying it again or bunging a bit of my swimming pool chlorine down the pan to kill anything living in there and then emptying it.