The 72-Hour Clock: Water, Waste, and Work Interruptions When You Boondock

Two people boondocking full time hit the same wall about every 3 to 4 days: the fresh tank runs low, the gray and black tanks fill up, and work stops until you deal with it. In our Thor Compass 23TW, that clock runs on about 10 to 13 gallons of use a day between the two of us, out of a 41-gallon fresh tank.

It does not matter what meeting I have, what deadline is coming, or what code I am in the middle of debugging. When the water is gone, it is gone. When gray and black are full, they are full. That is the schedule now.

As of this update in mid-April 2026, my wife and I are about a month into working remotely from a boondocking camp, part of the Working From the Road series on what it actually takes to work from an RV when the road calls. She is a court reporter. I am a technology leader running AI workflows over Starlink. We are both on conference calls and video meetings most of the day, and every 72 hours or so, all of that stops for what I call the water cycle.

The Tank Math

We are in a Thor Compass 23TW. The tanks are:

• Fresh water: about 41 gallons
• Gray water: about 32 gallons
• Black water: about 32 gallons

With two people using the RV on the trip, showers, cooking, dishes, coffee every morning, the fresh water lasts 3 to 4 days. Gray fills up at about the same rate. That is the clock. When it runs out, you are done until you refill.

Boondock or Bust puts typical conservative boondocking use at 3 to 5 gallons per person per day. Our 10 to 13 gallons a day for two of us lines up with that range for normal use, not the strictest water rationing.

The RV has a built-in monitoring panel that shows the tank levels, so you always know where you stand. It is not a surprise when it happens. You just have to plan for it. These numbers are specific to two people in this Thor Compass 23TW with no outside water hookup. More people, a bigger rig, or a full hookup site will change the math.

What the Dump Process Actually Looks Like

We use a portable waste tote, I call it the poop tote, because that is what it is. It is a gray tank on wheels that holds about 30 gallons. You connect it to the RV drain, open the valve, and let it fill.

Here is the thing nobody tells you: your RV tanks hold more than the tote. The black tank alone is 32 gallons and the tote holds 30. Once you open that valve, you cannot just stop it mid-flow. If you let the tanks fill all the way before dumping, you will overflow the tote. Trust me on this one.

The answer is dump more often. Do not wait until the tanks are completely full. Do it at 75% and save yourself the mess.

Once the tote is full, it weighs about 250 pounds. You are not carrying that anywhere. I hook it up to an ATV and tow it to the dump point. If you do not have an ATV, you are backing your car up to the RV every time. Use whatever you have, but you need something with wheels and a hitch.

The 72-Hour Checklist

This is the sequence we actually run, start to finish, built to protect the call you are on as much as the tanks:

1. Check levels, dump at about 75%. Do not wait for full. The tote holds about 30 gallons and the black tank alone holds 32, so a full tank overflows the tote.
2. Finish the call. The dump can wait twenty minutes. A dropped meeting cannot be undone.
3. Tote dump black, then gray as needed. Connect the tote to the drain, dump the black tank first, close the valve, and repeat for gray if the tote still has room.
4. Haul and empty. Hook the tote to an ATV, or whatever you have with a hitch, and tow it to the dump point. A full tote is about 250 pounds, so you need wheels, not your arms.

   

5. Refill fresh. Combine the fresh-water refill with the dump run instead of making two separate trips into town. We keep a water container on-site, which helps.
6. Buffer a half day on the calendar every 3 to 4 days. Best case the whole cycle takes about an hour. Worst case, a second tote trip or a drive into town for water, it eats half a day.

After a month of this, it comes down to the same resource planning I do at work, just applied to water tanks instead of server migrations: never let a tank hit 100%, keep one day of water in reserve so you are not scrambling before a 9 AM call, and put the dump on your lightest meeting day when you can choose.

The Water Filter Situation

We carry a Berkey water filter, the plastic travel version. It is one of the best investments we have made for RV life. You can put just about any water through it and it comes out clean and tasting good.

When you are traveling and filling up at different water sources, campground spigots, rest stops, wherever, you do not always know what is in that water. The Berkey handles it. We run all our drinking water through it regardless of the source. For cooking and dishes, the RV tank water is fine.

If you are planning to boondock or travel in an RV, get a water filter. Do not think about it. Just get one.

The Bigger Point

I can run AI agents that build websites, send emails, debug code, and manage three businesses, all from a terminal window over Starlink. That part of my work life is automated and frictionless.

But every 72 hours, I am hooking a waste tote to an ATV and hauling it across a field. That part is not automated. It is not frictionless. And there is no app for it.

The things you take for granted in a house, turn on the faucet, flush the toilet, water just works, those become active projects when you are boondocking. You are managing a resource that has a hard limit and a fixed timeline. That is the reality of working remotely from an RV.

If you are a project manager by trade, you will adapt to this quickly. If you are not, start thinking like one. Your water tank is your critical path, and it does not care about your deadlines.

Coming Next

• Generator Math, what boondocking actually costs in fuel
• The Two-RV Office, why one RV is not enough when two people work from the road
• Mice, Mud, and Meetings, the unautomatable side of remote work

Dominic Ferrara is a technology leader who works from his RV when the road calls. He writes about remote work, AI tools, and off-grid life at dominicferrara.com.

Transparency: Articles on this site are written with AI assistance (Claude Code) and reviewed, edited, and fact-checked by Dominic Ferrara based on personal experience. All data points are from actual field measurements and real-world use.

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