above ground holding tank

Whether we are on hook ups or using tank we go a week before dumping.
50 gallons black & 78 gallons grey.
I do have to shuttle some grey over to black at day 5.


OP....
My problem(s) with a 'holding tank' is having it slid under my RV. I'm sure it will fit but not to thrilled with the idea of it venting under my rig and around the sitting area outside.
Bad enough when some CGs have neighbors sewer hookup right in your yard but venting is done with a 8'-10' stand pipe with elbow.

300 gallons should be roughly twice monthly pump out ie: $40/month

Dutch_12078 wrote:

Francesca Knowles wrote:
First thing that occurs to me is to wonder how fast that puppy will fill up. I've been involved in some sewer planning projects, and average water use in a residential setting is assumed to be 125 gallons per person per day! Most of which goes down the drain, of course.

I s'pose RV use might be a little lower than that, depending on appliances etc, but still- at $20.00 a pump it won't take long to make your sticks-n-bricks sewer bill look like chump change.

I think you'll find that RV use, particularly when not on full hookups, is considerable less than that. My wife and I can easily go a week before filling our 70 gallon total waste tank capacity without even trying hard, and without using public facilities for showers or anything else.

I was thinking that the O.P. would have a water hookup, too, at the site with the tank.

Folks tend to use more water when it keeps coming out of the tap!

I camped by myself for about 2 weeks on 100 gallons of fresh water. I did have a place to drain my 42 gallon grey tank, and the 59 gallon black tank never got full - even in a month.

Yes I think you can go a week or so - perhaps 2 weeks without dumping. I like the idea of dumping your tanks every time they are full, and you will get an idea of how many times it takes to fill the tank. Then call the guy to dump your 300 gallon tank, and dump the black tank and RV tank all at once, getting about 375 gallons all at once.

The charge is more for the labor to drive out there, than the actual cost per gallon to dump it. I think they even charge $20 per portable toilet serviced weekly.

You can also get thrifty with your water too. If you can recover some of your shower or dish water, you can dump it outside, and also save some in a used gallon container to use for flushing the toilet.

Fred.

Francesca Knowles wrote:
First thing that occurs to me is to wonder how fast that puppy will fill up. I've been involved in some sewer planning projects, and average water use in a residential setting is assumed to be 125 gallons per person per day! Most of which goes down the drain, of course.

I s'pose RV use might be a little lower than that, depending on appliances etc, but still- at $20.00 a pump it won't take long to make your sticks-n-bricks sewer bill look like chump change.

I think you'll find that RV use, particularly when not on full hookups, is considerable less than that. My wife and I can easily go a week before filling our 70 gallon total waste tank capacity without even trying hard, and without using public facilities for showers or anything else.

Last year we work camped at a state park because of its proximity to a flood zone did not have a septic system for the host. Instead they had a plastic tank that we dumped into. They arranged for a septic pumping company to come out weekly to pump us out. Usually we were around 300-350 gallons each week. We showered and did all out laundry with no problems.

There was a study I read on the average liquid use in an RV and it stated it was 27 gallons a day. Assuming 30 gallons a day and the average seasonal uses their site every weekend and two weeks during the season my math is about 50-60 days for a 6 month Minnesota season. 60x30=1800 1800/300 = 6 6x$20 = $120.00 for the season.

I know that when I am dry camping I can make my internal 60 gallon grey water tank last 3 days.

Really just looking to see if anybody thinks this is

I would like to see how this would work. Some DP motorhomes sit pretty close to the ground when the air is dumped and a holding tank would have to be pretty thin to fit underneath. I see no problem with trailers and 5th wheels.
BTW, I have stayed at places that charge $20 or more just pump the regular tanks on a RV.

First thing that occurs to me is to wonder how fast that puppy will fill up. I've been involved in some sewer planning projects, and average water use in a residential setting is assumed to be 125 gallons per person per day! Most of which goes down the drain, of course.

I s'pose RV use might be a little lower than that, depending on appliances etc, but still- at $20.00 a pump it won't take long to make your sticks-n-bricks sewer bill look like chump change.

I have not seen that but I would let trailer tanks fill like normal. About once every 3-4 days depending on use I would open trailer valves and transfer to campground tank. This will allow you to watch what happens and be in control of the valves in case tank starts getting too full. This also allows you to be in charge of how often they pump and charge you $20.00. Randu