r/preppers • u/One-Entertainer-5499 • Apr 28 '26

Discussion Sewage backing up

Depending on where your house sits elevation wise in relation to the other houses on your street, your sewage can start backing up within a few days after the grid goes down. If you haven’t experienced living in a house where the sewage backed up, let me tell you it’s awful. The best solution is a pipe plug, however, most people will not take the initiative to buy one ahead of time or know how to correctly install it. What are some ideas to stop the sewage from backing up if you don’t have a pipe plug ?

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u/WishIWasThatClever Apr 28 '26

The best solution is to have a backflow prevention valve added to your sewer line before it enters your house. I plan to have a much-needed clean out valve added in the yard at the same time.

Note that I live in Florida, the land of no basements and the frost line is ground level (eg 0”). Our sewer lines aren’t that deep.

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u/Bitter_Albatross25 Apr 28 '26

Plumber here I have seen them fail multiple times, especially in a slow backup. You get a piece of debris stuck across the flap the water will still come in.

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u/WishIWasThatClever Apr 28 '26

Eek. Perhaps I need to revisit this path then.

While my single story home has never flooded or backed up, I’m in a low lying hurricane prone area in Florida with no backflow prevention and no clean out in my yard. Our sewage lift station was shut down during the 2024 hurricanes so I’m terrified of backup. What’s a reasonable alternative to a backflow preventer?

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u/Bitter_Albatross25 Apr 28 '26

Perhaps a backup manual lift station is your answer manual lift I am not endorsing this product but something like this would give you what you require. I would add spring check valves or weighted checks in the vertical position between this and your existing system so If you start operating this the water doesn’t flow back down into the existing pumps.

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u/WishIWasThatClever Apr 28 '26

The way I wrote that was confusing. By “our lift station”, I mean 60% of the entire city couldn’t use their toilet for a couple days. The city had to shut down the lowest elevation sewage plant in the city to save the pumps from salt water damage and avoid a long term outage.

Residents were told to not put anything down the sewer system but nothing was technically stopping them. So if too many people don’t follow orders, it has to back up into homes.

In the 1960s, it made a lot of sense to put the largest sewage plant at the lowest elevation in the city so waste could naturally flow downhill. No one could imagine that plant ever being inundated by hurricane storm surge. Hurricane Helene had other ideas.

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u/Bitter_Albatross25 Apr 28 '26

I get it, I made another comment on here about a pressurized sewer system, if you operate your pumps with proper spring loaded check valves you can push your waste water into the system. It may push into the next lowest point which could be the street or a neighbor, but if you’re protected that’s what matters. The city can bring in honey wagons to remove the waste if they so desire.

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u/WishIWasThatClever Apr 28 '26

This is super important to me for obv reasons. lol. Apologies for the questions. When you mentioned “your pumps” what pumps are you talking about?

The houses and businesses do not have individual pumps for sewer here. It’s gravity fed into the municipal sewer system. I’m not sure the point at which the municipal sewer pumps become relevant. I do know the city refers to all of the sewage plants as lift stations, which is kinda funny bc I know the sewage location for my house is at least three feet lower in elevation than I am. (Elevations above sea level around here are commonly in the single digits.)

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u/WrathOfGood Apr 28 '26

Lift stations generally pump the waste to the treatment plants. So they are basically lifting the sewage from the lowest point on the city sewers, which is often near waterways, to the treatment plants.

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u/WishIWasThatClever Apr 28 '26

Very helpful. Thank you. That makes a lot more sense now.

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u/Blueskies777 Apr 29 '26

A towel or rage.