09:14AM | 02/03/02
Member Since: 02/02/02
2 lifetime posts
Six years ago I had a new field line installed. The contractor used a slag material instead of the marble rock. Now the toilets are slow in flushing. I took the top of the septic tank off and the level of the sludge is 7"-10" below the top of the walls. Is this correct? Do I have a problem with the field lines now becoming clogged because of the slag material use?
What is my next step?


03:35AM | 02/04/02
Member Since: 11/16/01
301 lifetime posts
Dear Pawly,
First off, when was the last time the tank was emptied? Usually, the inflow line is about that height in the tank. If your sludge level is above that you will be getting a backflow problem. Also you could have sludge feeding into your drainage field and if that is so you'd need to flush those lines well.


07:29AM | 02/04/02
Member Since: 05/02/01
17 lifetime posts
A layer of sludge that is 1 to 3 inches thick near the top of the tank is normal. The problem is when the sludge gets to be 12 to 18 inches thick and finds its way out through the oulet pipe into the field. this will clog your field regardless of the type of rock that was used.
If the toilets operate normally for the first flush in the morning, and then flush slow, then it is possible that the line to the septic tank or the line out of the tank is partially plugged. If the line out of the tank is cast iron, it is possible that it is partially plugged with "black rust"
If the toilet flushes slow even on the first flush in the morning, then I suspect the flush holes in the rim of the toilets are plugged up with lime. Do you have hard water in your area? Please post back, both problems can be fixed with relative ease.
Good Luck!


02:52AM | 02/10/02
Member Since: 02/02/02
2 lifetime posts
Had tank pumped, so far so good. Thanks for your suggestions.
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