White substance on septic riser

(Anthony Defoyd) #1

The risers on both the solids tank and the liquid tank have a white substance on them. My pumper thinks it’s due to excessive methane gas and suggested adding a vent. The system is a 1,250 gallon 2 compartment tank and the leaching chambers are the newer 3’ wide leaching chambers. Can anyone verify the diagnosis and remedy (adding a vent). The set up is a little odd in that the plastic riser lids are both about 12" below grade and had to be dug up in order to remove the lids.

(Roy Lewis, CMI - North Florida Inspector) #2

What a question on a home inspectors forum…
What did it taste like?:smiley:

(Anthony Defoyd) #3

Hi Roy, Just checking, is that not an appropriate question for this forum? I’ve seen a bunch of septic tanks and risers but never one where both risers have this condition. I really would appreciate any help as I don’t want her to dig this up in 5 years and have a collapsed riser.

(Roy Lewis, CMI - North Florida Inspector) #4

It looks like mineral deposits.

(Roy Lewis, CMI - North Florida Inspector) #5

It looks like mineral deposits washing down from above…

1 Like
(Roy D. Cooke, Sr) #6

I agree . Roy Cooke

(Mark Raumikaitis, CMI, IAC2, NH Lic #133) #7

I agree on mineral deposit. Buried riser kind of defeats the purpose. Add an extension to allow better access

(Junior S. Fudge, 342226, 342230) #8

Haha! :stuck_out_tongue:

(Scott Frakes, CMI) #9


I’m a little late to the party…

Seen the white substance in my area but not where its caused a riser to decay. Concrete baffles are another story as I often find them deteriorated or gone.

Simply recommend a riser extension(s).