The Logic Of Sewage Flow, Wc, Ventilation Pipes...

[jpcc 0]

I am now staying on the lower half of the flat.

5th of 12 floor.

When i flush my toilets (both masterbedroom and kitchen) in the morning.

They were clear, transparent water.

When i return from work in the evening, the WC water became slightly muddy.

Water level in wc is still around there, not much lowering of water level in both wc.

Masterbedroom is slightly more smelly than kitchen's wc.

I read before that the flow of water in wc can be affected by other flushing activities done

by neighbours above your floor or below yours, in that when they flush, it can introduce

some air in the ventilation column and suck out some water.

Any possibilities?

Case in point: How to solve the issue?

Get a good plumber?

Need to change sewage pipe of floor above? or floor below?

or complain PUB? town council?

I think the issue at hand is to know

1. the logic of how wc water flow out,

2. who/ what can fix it

Any ideas?

[yoongf 11]

I think u need to determine whether is mud or dissolved poo poo. I suspect is dissolved poo poo, and is due to poo poo did not clear the S bend of your toilet bowl. Before leaving the house, flush another time, just to make sure that the poo poo is really clear of the toiet bowl.

When u flush... does the water level rise before it drops? could also be a choke at the horizontal run between the toilet bowl and the vertical stack. Then u need a pressure jet to clear the choke.

[jpcc 0]

Thanks for info/ suggestion.

To be exact:

mbr wc : smelly

kitchern wc: muddy

ventilation pipe : in kitchen toilet

I have tried to flush without doing any biz.

e.g. i didn't touch mbr toilet for whole day and flush every morning.

But smell still came out every evening.

(i locked mbr just to make sure, anyway only two people staying currently)

kitchen toilet , my mum using but i checked, she only do it once everyday.