Disposing off water from water change

[ibleedblue65]

I'm trying to set up a water change system where I can turn a couple of valves on my return pump and empty the sump. Then turn on a pump in my mix bucket and fill it back up. The sump is in a sump room with the salt and fresh water holding bins on the other side of the wall in the garage. I'm trying to decide where to dump off the water from the tank. I could dump it in the yard out a garage wall which would be easiest. Our go around the back of the house and dump into the septic clean out. I an wary about putting salt water on the yard. Would appreciate ya'lls input.

 

[db366]

I dump mine on the crab grass I can't seem to get rid of!

 

[ibleedblue65]

Thats what I thought. I could dump it down the driveway but it works be hard to center it and keep it off the grass. Any reasons not to dump it in the septic clean out?

Edit: Excuse my predictive text *would

 

[cr500_af]

ibleedblue65;729463 wrote: Thats what I thought. I could dump it down the driveway but it works be hard to center it and keep it off the grass. Any reasons not to dump it in the septic clean out?

I've heard people say it is harmful to septic systems, but there are others who have been doing it for many years with no issues. That's how I get rid of mine.

I mean, with all of the soaps, cleaners, bleach etc that goes down a household drain, I don't think a couple of pounds of salt a month is gonna nuke anything.

 

[ibleedblue65]

So lets say I decide to dump it in the clean out. The line would have to go out a wall across the garage and then follow the perimeter of my house for 30-40 feet. should I bury this line? I would hate to see it. My return is a mag 18. Do ya'll think the pump can handle that? Tanks for the input

 

[cr500_af]

The pump should handle it just to get it outside the wall... but you need to have the waste line sloped after that. Interior waste lines have to be 1/8" slope per funning foot, to give you an idea of the amount. Since there will be no solid waste, my unprofessional opinion is that you could easily get by with half that amount.

 

[ibleedblue65]

Gotcha thanks for the input guys!

 

[eagle9252]

1/8" per 1 foot

I thought it was 1/4" per 10 foot

 

[cr500_af]

eagle9252;729542 wrote: 1/8" per 1 foot

I thought it was 1/4" per 10 foot

I was told by a master plumber that Standard Building Code was 1/8":1'. It is possible he misspoke though.

 

[garibaldi]

Code is a minimum of 1/8" per foot. In your situation you could have a greater slope. In a true waste water situation too much slope is as bad as too little slope. If the slope is too great the liquids leave the solids behind. If your just dumping water, just make sure you have the minimum slope. You may want to consider putting a p-trap in the line to make sure you don't get any odor back from the septic tank.

 

[rdnelson]

Make sure the p-trap is in a heated space so it doesn't freeze because it will always have water in it.

 

[ibleedblue65]

All very good info. Plan on tackling it this weekend. Thanks again guys

 

[gort]

When i dumped water on my driveway (a little bit of a hill downward) it left some real marks that didnt go away till i hosed it down or it rained. And you could see exactly where it ran down the driveway and down the road.

Neighbors were wondering what it was. I started just putting down the toilet.

 

[grouper therapy]

Most codes require 1/4" per foot slope on waste lines under 4" diameter, 1/8" per foot on 4" diameter and larger.

 

[cr500_af]

grouper therapy;729770 wrote: Most codes require 1/4" per foot slope on waste lines under 4" diameter, 1/8" per foot on 4" diameter and larger.

Thanks for the clarification. All of my DWV pipes are 4" so that may be why this wasn't explained to me. I plumbed my own house but had a plumber friend available for questions and a "pre-inspection inspection".