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Old 03-23-2020, 03:57 PM   #1
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Longest sewer hose run

Hey folks- whats the longest distance you've ever run your grey/black hose?


Why I'm asking: I have an access hole to my septic on the opposing side of my home. While it is downhill from where the bus is parked, it would be quite a long run. I'm looking at about 75'.


Thoughts?
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Old 03-23-2020, 04:31 PM   #2
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With sewage, length isn't so much of an issue. Grade is the important thing. You want to stick pretty closely to 2-3% or you'll have issues with clogging.
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Old 03-23-2020, 04:36 PM   #3
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With sewage, length isn't so much of an issue. Grade is the important thing. You want to stick pretty closely to 2-3% or you'll have issues with clogging.
Can you be flatter if it's just gray water?
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Old 03-23-2020, 04:56 PM   #4
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Can you be flatter if it's just gray water?
Yes as long as no food bits or anything else solid.
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Old 03-23-2020, 07:32 PM   #5
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Add a macerator. Cheap, functional, easy to rinse out and it'll pump your s@@t straight up. Be sure to use a slice valve before the macerator and although I didn't do it, an easy on easy off attachment of the macerator would be advisable.
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Old 03-24-2020, 05:47 AM   #6
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Add a macerator. Cheap, functional, easy to rinse out and it'll pump your s@@t straight up. Be sure to use a slice valve before the macerator and although I didn't do it, an easy on easy off attachment of the macerator would be advisable.
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Excellent post! If you use a macerator, the particles will be so small as to make them flow like liquid. After dumping. you will need to walk the hose from the bus to the dump,raising it up to your shoulder to get as much of the remains as you can.
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Old 03-24-2020, 09:35 AM   #7
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Originally Posted by kazetsukai View Post
Hey folks- whats the longest distance you've ever run your grey/black hose?


Why I'm asking: I have an access hole to my septic on the opposing side of my home. While it is downhill from where the bus is parked, it would be quite a long run. I'm looking at about 75'.


Thoughts?
"Sh!t rolls down hill, ¼" per foot"
This is civil engineering humor, but it's also the rule.
Less grade and the solids will bunch up and clog somewhere...
More grade and the liquids will run too fast leaving the solids to bunch up and clog somewhere...

This is for smooth pipe. Slinky hose creates other issues and probably should NOT be part of this equation.

If this appears to be a permanent installation on your property then I'm sure it requires a permit ect. as "you're now adding a bathroom" to your house...
This can be annoying because your septic tanks are sized by the # of terlets in the 'house' -- not the number of people in the house...

Something to think about if you have hateful arsehole neighbors or random county inspections... I get an annual random county insp every year for my septic system for example...
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Old 03-24-2020, 09:38 AM   #8
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The macerator idea looks like the best bet. I'm not going to have much in terms of solids in these tanks, but having a pump and a smaller hose looks like it will work well.


They have some easy-on-off macerators for RVs on Amazon.
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Old 03-24-2020, 10:02 AM   #9
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I have warn out two macerator pumps in the last 20 years. They were fine, just got used a lot.

I have pumped 100' with a slight uphill grade. They work well as long as you treat them properly.

The biggest issue that I had was people putting things in the tank that the pump could not handle. Then, part way through draining the waste tanks I would have to disconnect the pump (full of waste) and clear the obstruction. This included ladies personal items, big wads of TP, 9mm shell casing etc.

I did finally switch to a compositing toilet but continued to use it for grey water.

When we had the RV toilet we developed a rule that was shared with any visitors: "With the exception of very small amounts of TP, nothing goes in the toilet unless you ate it first."

That helped but one visitor ignored it and fouled things up bad enough that I decided to try out a compositing toilet. Lived with it for a couple of years and will be using one in my bus.

Good luck with your build.
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