Septic Tank Odor - Vent pipe (Why now?)
Not for sure if I have this posted in the right area or not - I'm new to the forums. If I need to relocate - let me know or a moderator can relocate it for me.....
Here's my issue-
I had lived alone (for about 6 years) in my 1100 sq ft ranch home up to June of last year when my fiancee and her 2 girls (9 and 7 yrs old) moved in. I had the septic tank emptied just after they moved in because I anticipated a quite a bit more water usage and I knew the 1500 gal tank was way over due. This was the first time it had been emptied since I bought the house in 1996 (I know it should be emptied every 3 - 5 yrs) . Ever since having it emptied, I can smell a sewage odor (H2S?) on the back side of my house (close to where the vent pipe is located on the roof) on a breezy day. I have climbed up the roof and verified that it's the same smell coming out of the roof vent. I have never smelled this odor before until after the tank was emptied. I thought it would eventually go away but it hasn't yet.
Any thoughts anyone????????
I have had no problems with the leech beds (knock on wood). I have a diversion/splitter box after the tank that allows me to alternate between the two leech beds (I do it every spring). I just added some Rid-X for the first time about 2 weeks ago thinking that maybe there's no biological matter in the tank to break things down. Could the waste be going septic? If so, how can I fix this problem????????
Outside odor from septic system
About two years ago we finished building our house on 25 acres and a recent problem has me stumped. For the past six months weíve occasionally detected a sewer odor outside. Iíve walked our property and tried to locate the smell concentrating near the septic tank and leach field but the smell is not coming from either of these areas. I recently noticed that I can only smell it when the wind is blowing lightly from a certain direction. Suspecting that the odor was coming from the vents, I climbed up on the roof to check it out. There was a light updraft coming from the vent and strong sewage odor. Initially I couldnít understand how there could be an updraft in a sealed DWV system. Air must be coming in from somewhere, but where? Then I remembered that we installed three inside AAVs, which are allowed by local code.
So here is my theory: It has taken several years for our DWV pipes to become tainted by sewage so that is why we havenít detected any odor until now. So when the conditions are right, the roof vents warm in the sun and warm air in the DWV system tries to rise. But if the system were truly sealed there would be no replacement air coming inÖ except for the 3 inside AAVs. AAV valves, which are designed to admit air to the system, could also admit air into the system as warm air from the roof vents pulls air from the system. Is this a possibility or could something else be going on?