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I just had a bathroom put in my basement. It's been working fine but yesterday we had a lot of rain and now the toilet won't flush and the shower will not drain.

It is a septic system and the other toilets and sinks have no affect of the basement bathroom. Every other sink, toilet and bathtub in the house drains just fine. Any ideas?

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  • Hello, and welcome to Home Improvement. We'll need more info: do you have a septic system? a sewage ejector pump? Does flushing an upstairs toilet affect the basement toilet or shower? – Daniel Griscom Jan 10 '19 at 18:40
  • It is a septic system and the other toilets and sinks have no affect of the basement bathroom. – srussells Jan 10 '19 at 19:02
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    Hello, again. It looks like you've created two accounts, Scott and srussels. Please use the SE Contact page to request a merge of your two accounts. – Daniel Griscom Jan 10 '19 at 19:31
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If your basement has a back flow preventer when the water level is high the pressure in the line from a raised water level is probably the cause. I had this happen, built the bathroom in the summer, it worked great until several days of rain then no draining like you have. Whatever you do don't make the mistake I did and think the back flow valve was plugged , when I opened it up got all the brown trout from the line above. I ended up having to add a pump to the system if I remember correctly it was around 500$ for the tank& pump a small one but we never had any problems after that.

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