RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 10-25-2020, 05:38 PM   #1
Junior Member
 
Join Date: Nov 2018
Posts: 4
Sizing a septic tank

We want to park our 5th wheel for a few months. We donít have access to a septic tank and want to install one. How do you size a septic tank? We have 2 black tanks, one is serviced weekly, the other not as much. 2 grey tanks get more use. I donít want to risk undersizing.
Whitesoulpat is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 10-25-2020, 05:57 PM   #2
Senior Member
 
Freightliner Owners Club
Join Date: Mar 2002
Location: Western WA
Posts: 1,260
If you are considering either a large in ground holding tank or a complete in ground septic system, I’d suggest you contact a local septic tank servicing company for information.
__________________
'07 Winnebago Journey 34H, ISB-02, MH2500
Toad - '08 Ford Taurus X
Blue Ox, Aventa
US Gear UBS
FleetMan is offline   Reply With Quote
Old 10-25-2020, 06:04 PM   #3
Senior Member
 
Winemaker2's Avatar
 
Join Date: Nov 2006
Location: Western NY
Posts: 3,305
Most local codes will spec size based on number of people the accommodations will house or strictly on # BRs. A typical 2 BR house with max of 4 occupants should be adequate.
Reqmts will vary by state codes but a current "typical" min size septic tank will be 1,000 gal. What is reqd for drain field will be very locale specific and likely require a percolating test to properly design the drainage field.
__________________
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD
Winemaker2 is offline   Reply With Quote
Old 10-25-2020, 06:04 PM   #4
Senior Member
 
Join Date: Oct 2020
Posts: 661
I think you're likely in for a huge expense. Presumably your local government will have some say in what you can put in.

I'm going to make the reasonable assumption that you own the land. I would put something in that would service a future house that you or a future owner might want to build. So that means something that will service at least a 3 or 4 bedroom house in a location that makes sense for a likely location where a house might be built. That way you'll get some return on your investment when you sell.

Also, I'm not sure how big your tanks are, but dumping large quantities into a gravity system is not the best for the longevity of the system. A multi-tank pumped system would probably be best for that use, but it will likely cost more money. And it will require electricity.
Goodspike is offline   Reply With Quote
Old 10-25-2020, 06:12 PM   #5
Senior Member
 
Kenny Loney's Avatar
 
Join Date: Aug 2019
Location: New Tecumseth ON
Posts: 112
I don't know what area you are in, but in our area septic tanks, actually septic systems are under the jurisdiction of the public health unit. Size of dwelling unit, bedroom#s, fixtures dictates the size of the tank, and then the size and type of leaching bed, type of soil. Also proximity to wells, streams lakes.
Now if you are just interested in a large sealed holding tank, different story. But even here, you would have show the health unit with a signed contract with a licensed septic pumping service.

Ken
Kenny Loney is offline   Reply With Quote
Old 10-25-2020, 06:18 PM   #6
Senior Member
 
Join Date: Nov 2015
Posts: 13,858
Quote:
Originally Posted by Goodspike View Post
I think you're likely in for a huge expense. Presumably your local government will have some say in what you can put in.

I'm going to make the reasonable assumption that you own the land. I would put something in that would service a future house that you or a future owner might want to build. So that means something that will service at least a 3 or 4 bedroom house in a location that makes sense for a likely location where a house might be built. That way you'll get some return on your investment when you sell.

Also, I'm not sure how big your tanks are, but dumping large quantities into a gravity system is not the best for the longevity of the system. A multi-tank pumped system would probably be best for that use, but it will likely cost more money. And it will require electricity.
Keep hearing that 'dumping' cautionary tale
CG Septic systems handle multiple dumps...gravity systems
Our 1500 gallon septic tank at S&B handles me dumping 128 gallons
Been dumping RV waste tanks into S&B septic tanks at numerous places over many years of RV and have yet to encounter issues

Yes...guess you could 'push' some effluent out into leach field/leach pit and cause some clogging
I must be lucky....cause it has never happened


OP.......
1000 gallon minimum if you are going to go thru the legal hoops
Parking 5vr for a few months.....permitting/contracting/installing could take few months

Is this really rural or could you just have a Honey Wagon come dump you as needed
__________________
Is it time for YOUR Medication or Mine?
Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31
Old-Biscuit is online now   Reply With Quote
Old 10-25-2020, 06:19 PM   #7
Senior Member
 
Join Date: Oct 2020
Posts: 661
Quote:
Originally Posted by Kenny Loney View Post
Now if you are just interested in a large sealed holding tank, different story. But even here, you would have show the health unit with a signed contract with a licensed septic pumping service.

Ken
That might be a better (cheaper) way to go if the property is not developable later. Holding tanks are basically what our state parks do for their dump stations. I know a small local school that does that for one of their remote buildings. I'd price out pumping services before buying because I would suspect that pumping 1,500 gallons doesn't cost 1.5 times as much as 1,000 gallons, so you might save money over the long run going bigger.
Goodspike is offline   Reply With Quote
Old 10-25-2020, 06:35 PM   #8
Senior Member
 
grindstone01's Avatar
 
Join Date: Oct 2017
Location: FULL TIMERS
Posts: 4,921
Ideas for if you are a DIYS person!

We full time and set up a home made septic system in our son's 5 acres in Mich and also my brothers 5 acres in Texas. Both places we would stay for 2-3 months taking daily showers, using our washer/dryer, and we never had any drainage issues. We always left both of our drain valves open.
For our homemade septic system, I buried 2-5 gallon pails taped together upright and cut a hole in the top 1/3 with a 10', 4" perforated drain tile buried 6" under the sod. The top of the pail setup had a regular threaded 4" pipe opening like used in campgrounds.
Attached is a similar home made septic system only I used a one pail holding tank (could use 1 drum)
https://www.wikihow.com/Construct-a-Small-Septic-System
__________________
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
Full Time since 2012
grindstone01 is offline   Reply With Quote
Old 10-25-2020, 07:33 PM   #9
Senior Member
 
Join Date: Jul 2014
Posts: 24,638
I just built a septic tank for my RV.

I drilled 40 holes in each of 2 55 gallon barrels, used 2 inch PVC and a tee into each one.

I dug a hole deep enough to lay them down 8 to 10 inches under the ground, ran a pipe over to the corner of my shed and buryed everything.
twinboat is offline   Reply With Quote
Old 10-25-2020, 08:54 PM   #10
Senior Member
 
grindstone01's Avatar
 
Join Date: Oct 2017
Location: FULL TIMERS
Posts: 4,921
Quote:
Originally Posted by twinboat View Post
I just built a septic tank for my RV.

I drilled 40 holes in each of 2 55 gallon barrels, used 2 inch PVC and a tee into each one.

I dug a hole deep enough to lay them down 8 to 10 inches under the ground, ran a pipe over to the corner of my shed and buryed everything.

Did you put in a overflow drain field line? The idea of having a leak proof tank is that water will stay in the tank during non use periods and allow the bacteria to live and continue to decay any solid matter. If you have holes in the bottom of your tank, the tank will dry out, crust over, and plug up the holes for next time's usage.
Time will tell, give us a shout back in a couple of years. A drain line can always be added later.
__________________
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
Full Time since 2012
grindstone01 is offline   Reply With Quote
Old 10-25-2020, 09:02 PM   #11
Senior Member


 
Join Date: Jun 2017
Posts: 2,787
Quote:
Originally Posted by grindstone01 View Post
Ideas for if you are a DIYS person!

We full time and set up a home made septic system in our son's 5 acres in Mich and also my brothers 5 acres in Texas. Both places we would stay for 2-3 months taking daily showers, using our washer/dryer, and we never had any drainage issues. We always left both of our drain valves open.
For our homemade septic system, I buried 2-5 gallon pails taped together upright and cut a hole in the top 1/3 with a 10', 4" perforated drain tile buried 6" under the sod. The top of the pail setup had a regular threaded 4" pipe opening like used in campgrounds.
Attached is a similar home made septic system only I used a one pail holding tank (could use 1 drum)
https://www.wikihow.com/Construct-a-Small-Septic-System
"5 gallon" pails? Do you mean 55 gallon drums?
tfryman is offline   Reply With Quote
Old 10-25-2020, 09:08 PM   #12
Senior Member
 
grindstone01's Avatar
 
Join Date: Oct 2017
Location: FULL TIMERS
Posts: 4,921
Quote:
Originally Posted by tfryman View Post
"5 gallon" pails? Do you mean 55 gallon drums?


NOPE, 2 - 5 gallon pails with the openings duct taped together work just fine. The drain field does the work by getting rid of the excess liquid, the pails just catch and hold back the solids for the slower dissolving process. Another thing is I left the RV drain valves open all the time, so the 10 gallon holding tank never got overwhelmed. If I were to do a full RV waste tank dump, then I would have needed a larger holding tank.
This worked just fine for 2 adults full timing, taking 2 daily showers, washing dishes, and doing a load of laundry every other day on average.
__________________
2018 Chevy DRW
2008 Carriage Cameo, F34CK3
Full Time since 2012
grindstone01 is offline   Reply With Quote
Old 10-25-2020, 09:27 PM   #13
Senior Member
 
Join Date: Jul 2014
Posts: 24,638
Quote:
Originally Posted by grindstone01 View Post
Did you put in a overflow drain field line? The idea of having a leak proof tank is that water will stay in the tank during non use periods and allow the bacteria to live and continue to decay any solid matter. If you have holes in the bottom of your tank, the tank will dry out, crust over, and plug up the holes for next time's usage.
Time will tell, give us a shout back in a couple of years. A drain line can always be added later.
I see your point but I live on a river, with a high water table, so the barrels are in water.

If I didn't have holes, they would pop out of the ground in the spring.

They are building a new house a few lots down. Their 1000 gallon plastic septic tank floated up, wrecking all of the plumbing. Nobody thought to fill it.
twinboat is offline   Reply With Quote
Reply

Tags
tank



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dumping Black Tank Into Home Septic Tank kazeej Boondocking 22 01-10-2020 07:01 AM
Septic System Safe Additives For Blackwater Tank calibrator RV Systems & Appliances 8 02-02-2015 10:39 PM
Gnats flying out of the septic tank into RV DougWHolt MH-General Discussions & Problems 7 01-05-2015 12:51 AM
RVs hooked up to homes Mound Septic, tank+pump system work? xekon Full-Timers 13 07-20-2011 08:06 AM
Septic Tank issue Doggievet MH-General Discussions & Problems 15 10-06-2005 05:36 PM


All times are GMT -6. The time now is 12:22 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.