Are there any? I'm guessing there might be one that prohibits using the same tank for both fresh and waste water. Other than that it don't look like it.Getting on in years, we traded the 5er for a coach and unhappily find that both the fresh water service and waste water service are in the same underside compartment. Disgusting. What genius thought that up? And how was doing it "sold" to Winnebago?

No laws or regulations that I know of. When you dump your tanks, black and grey, don't they go down the same sewer pipe anyway?I think multiple holding tanks are added to RVs to increase the capacity they can be used. You can go a lot longer before having to dump with a 50 gallon thank than you can a 25 gallon tank. Another reason for multiple tanks, (perhaps) is because manufacturers could use smaller tanks, but more of them. Dedicate one for the toilet, one for shower, one for the kitchen sink and they don't have to be as big. But the over all holding capacity is the same. (for example, you can have one 75 gallon tank for everything. At capacity that's 75 gallons multiplied by 8 pounds per gallon equals 600 pounds. If you had 3 twenty-five gallons, the weight of each one would potentially be 200 pounds.) And their overall size is smaller, easier to tuck away into the frame.Other than convenience, size, and weight, there's no other reason why there's a difference between your black and black tanks separate or combined into one.

I'm assuming you mean the same "bin", not the same "tank". It's not an uncommon setup for motorhomes. Ordinary care in keeping the fresh fittings clean is usually all that's needed for safe use. I keep a can of hospital grade Lysol disinfectant in the wet bin that I use to spritz both the coach and park ends of the fresh connections before hooking up.

dcmac214 wrote:Are there any? I'm guessing there might be one that prohibits using the same tank for both fresh and waste water. Other than that it don't look like it.Getting on in years, we traded the 5er for a coach and unhappily find that both the fresh water service and waste water service are in the same underside compartment. Disgusting. What genius thought that up? And how was doing it "sold" to Winnebago?3 MH’s since 1986 and each has had a “wet bay” with fresh water connection and gray and black tank dumps. my buddy’s TT was set up the same way. maybe i’m missing the point.

There is no connection between water systems, fresh or waste. And those systems are sealed to no way for one to infiltrate the other. I don't see a problem with location.

There are plumbing codes that apply to RVs, but they don't in any way prohibit using the same outside bay for various connections, both fresh and black/gray. There are requirements for things like vacuum breakers or other backflow prevention devices, the height of sink taps above the flood level of the basin, etc.I'm afraid I don't see what's so disgusting about having both fresh and waste connections in the same bay. They aren't connected to each other. In my house, the pipe in from the well and the pipe out to the septic system both go through the foundation in the same general area, too, and any servicing or whatever needed to them would take place in the same corner of the laundry room, next to the pressure tank and water heater.

Laws/Regulations for RV Fresh & Waste Water Service

Grit_dog
Navigator
Aug 20, 2019
CavemanCharlie wrote:

Weeellllll,, a long time ago, back when things were different, and I was a heck of a lot younger. We used to have parties with large quantities of beer in things called Kegs. If you went into the bathroom, at this type or party, and someone was using the toilet then the sink was another option.

Don't worry anyone. Those old houses have been either torn down or remodeled.

Ya know, now that you mention it, last several years, don't see anyone peeing in the sinks at concerts and sporting events anymore.....Maybe I'm not going to the right concerts!
rk911
Explorer
Aug 20, 2019
legitimate question for the OP: how was the wet bay...fresh water intake and gray/black tank discharge...arranged in your 5’er?
Puttin
Explorer
Aug 20, 2019
myredracer wrote:
NFPA 1192 covers plumbing and other systems in RVs. Doesn't prohibit grey water emptying into the black tank if that's what you meant. Sure wouldn't want to share "fresh" water and "waste" water. :E

:)
4x4van
Explorer III
Aug 20, 2019
BarabooBob wrote:
4x4van -What is so terrible about the pipes being in view? Do you want me to put pants and underwear on my TT o that you can't see its private parts. Do you get disturbed when you drive past a field and see a cow taking a **** without using an outhouse?
I think we have more important things to get upset about.

I was actually being facetious, since the OP seemed so aghast at the sewer outlet and the city water inlet being located near each other. But yes, if you could put at least underpants on your trailer, I'd appreciate it.:W
dodge_guy
Explorer II
Aug 18, 2019
TechWriter wrote:
Old-Biscuit wrote:
In a home the bathroom sink and toilet share same room, same cold water plumbing.
One just has to remember to not wash hands in toilet or pee in sink.

Good one. I wanted to say this.

Well that’s why common sense is fo........... never mind!
TechWriter
Explorer
Aug 18, 2019
Old-Biscuit wrote:
In a home the bathroom sink and toilet share same room, same cold water plumbing.
One just has to remember to not wash hands in toilet or pee in sink.

Good one. I wanted to say this.
Deb_and_Ed_M
Explorer II
Aug 18, 2019
I understand what the OP is commenting about - I can see where having the waste tanks and the freshwater tank sharing a compartment can be both convenient; and a source of contamination. I sure wouldn't leave my white water hose and sewer hose laying together; but it's probably not too hard to keep things apart with plastic bins? And if the freshwater fill is inside that same compartment, giving it a spritz of bleach before connecting the hose would be prudent?
am1958
Explorer
Aug 18, 2019
Methinks too many people are "disgusted" by too many petty little things nowadays...
myredracer
Explorer II
Aug 18, 2019
NFPA 1192 covers plumbing and other systems in RVs. Doesn't prohibit grey water emptying into the black tank if that's what you meant. Sure wouldn't want to share "fresh" water and "waste" water. :E
BarabooBob
Explorer III
Aug 18, 2019
4x4van -What is so terrible about the pipes being in view? Do you want me to put pants and underwear on my TT o that you can't see its private parts. Do you get disturbed when you drive past a field and see a cow taking a **** without using an outhouse?
I think we have more important things to get upset about.

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