A practical, cross-market guide to dumping RV grey and black water tanks between festival days, whether you’re at Bathurst, Burning Man, Shambhala or Splore.
This guide covers how to dump between festival days without losing your campsite, whether the event has on-site services or you’ll need to drive out and back. It sits alongside our other cross-cutting festival guides on keeping a campervan cool in summer, freedom camping versus festival campgrounds, choosing the right motorhome size for a festival crowd, and generator rules at Australian music festivals.
Most festivals with dedicated RV camping offer some form of on-site pump-out service (at Camp EDC Las Vegas, Shambhala and Bonnaroo’s Outeroo RV camping, for example) for an additional fee, typically $30 to $75 USD per pump-out depending on the festival and the season. Where no service exists on-site, the nearest permanent dump station is usually 20 to 60 minutes away and can be located through free apps like Sanidumps or Campendium. The most common mistake is leaving it too late: black tanks fill faster than most first-time renters expect, and a 4-berth vehicle sleeping four adults typically fills its black tank in 2 to 3 days.
Understanding the maths before you arrive is the difference between one relaxed pump-out and a stressful drive out at 6am on the final morning.
A useful rule of thumb: whatever a fleet operator says the tank capacity is, budget for 70 to 80 percent of that before dumping, since tank sensors are notoriously unreliable at reading the last 20 percent accurately.
The larger, better-run festival campgrounds offer either drive-through pump-out on arrival and departure, or fee-based on-request pump-outs during the event. A few examples from Event Campers guides:
Fees typically range from $30 to $75 USD, or roughly $50 to $100 AUD equivalent in Australia and New Zealand. Book on-site pump-outs early in your stay if the festival allows it, since demand spikes as the festival progresses.
Many smaller or more remote festivals don’t offer pump-out at all, meaning you’ll need to drive to a permanent dump station and back. This is the trickier scenario, since leaving your campsite typically means losing an entry stamp for the day or having to line up at the gates again on return.
Examples where on-site services are limited or absent:
The workflow at these events looks something like: on your rest day between festival days, or in the mid-afternoon between morning and evening acts, drive out to the nearest dump station, empty tanks, refill fresh water if possible, and return. Budget 45 minutes to 90 minutes for the round trip.
Three tools worth having on your phone before the trip:
In addition, most Walmart stores in the US allow RV overnight parking with a receipt but do not typically offer dump stations; truck stops on interstate highways (Pilot, Flying J, Love’s) commonly do, often for $10 to $20 USD per use. In Australia and New Zealand, council-run dump stations at town rest areas are usually free but can be busy or closed for maintenance during major event weekends, so check ahead.
A few things that regularly cause issues at both the pump-out point and back at your rental depot:
Related reading on generator rules in the Australian context is in our generator rules at Australian music festivals guide.
For festivals where you’ve decided to drive out and dump mid-event, here’s a workable timeline:
The night before: monitor tank levels using the vehicle’s control panel. If either grey or black is above 80 percent, plan to dump the next morning.
Morning of your rest day: eat breakfast, break camp lightly (don’t fully strike, since you’re returning), check that your festival wristbands allow re-entry. Most multi-day festival wristbands do, but confirm with your specific festival.
Drive to the nearest dump station. Bring a pair of disposable gloves, RV toilet paper, black tank chemical, and a hose specifically dedicated to the fresh water fill (never mixed with the black tank hose). Sanidumps, Campendium and CamperMate all show which stations have fresh water available alongside the dump.
At the dump: connect the black tank sewer hose first (always black first, then grey), open the black valve, let it drain, close the valve, then open the grey valve and let the grey water rinse the hose. Add a bucket of fresh water down the toilet and repeat if needed. Refill fresh water only if you have a dedicated hose and the station explicitly provides potable water.
Return to the festival campground. Re-scan your wristband, park in your original spot if held or the next available festival-designated space. Refill your onboard fresh water bottles.
Total round trip: typically 60 to 90 minutes, though remote festivals can push this to 2 to 3 hours.
The most reliable way to avoid mid-festival dumping is to book a vehicle whose tank capacity actually matches your group size. A common mistake for first-time renters is booking the cheapest 4-berth (often a compact van with 50-60 litre grey and black tanks) for a group of four adults at a four-night festival. The tanks fill on day 2, and you’re forced into an unplanned dump run.
For festival trips, we generally recommend:
For more on matching vehicle size to group size, see choosing the right motorhome size for a family of four at a music festival.
For winter festivals like Carnaval de Québec, tank dumping introduces one extra risk: freezing. If the ambient temperature is below zero, open valves can freeze in the open position, and the drain hose can freeze if left connected. Options:
Ask specifically about tank heaters and heated water lines at booking. Fleet operators like CanaDream and Fraserway RV in Canada, and Britz’s winter-ready campervans in New Zealand, offer winterised options.
Dump stations are shared infrastructure. A few universal rules of etiquette:
At festivals in national parks (Splore, Coorong, Woodford) or on rural private land, follow Leave No Trace principles: absolutely no ground dumping, no exceptions. Fines can run into the thousands and the reputational damage to festival RV camping as a whole is real.
How often do I need to dump my RV tanks at a festival? For a couple in a compact camper, once every 3 to 4 days. For a group of four in a 4-berth, every 2 to 3 days. Grey water fills fastest if everyone showers daily.
Where can I dump RV tanks at a music festival? Larger festivals like EDC Las Vegas, Bonnaroo, Coachella and Shambhala offer on-site pump-out services for a fee, typically $30 to $75 USD. At smaller festivals, the nearest permanent dump station is usually 20 to 60 minutes away and can be located through Sanidumps, Campendium or CamperMate.
How much does an on-site pump-out cost at a festival? $30 to $75 USD is typical, or roughly $50 to $100 AUD equivalent. Some festivals include a single free pump-out with a premium RV pass; others charge per use.
Can I dump grey water on the grass at a festival? No. Grey water dumping on the ground is banned at every festival Event Campers covers, and doing so can result in eviction from the campground plus fines.
What’s the difference between a grey water tank and a black water tank? Grey water is drainage from the sink and shower. Black water is toilet waste. They’re stored in separate tanks and must be dumped together, with black first, then grey to rinse the hose.
Can I refill fresh water at a dump station? Sometimes. Confirm the station has potable water (marked separately from the dump valve) and use a dedicated fresh water hose, never one that has touched the black tank hose. Apps like Sanidumps and Campendium show which stations offer both.
Do I have to return my RV rental with empty tanks? Most fleet operators charge a dump fee of $75 to $250 USD or the equivalent if tanks are returned full or dirty. Rinse the black tank, add fresh water and RV toilet chemical, and note the level on your return checklist.
Are flushable wipes safe in an RV toilet? No. Even “flushable” branded wipes routinely block RV toilets. Use RV-approved toilet paper only. Repair fees for blockages can run $200 USD or more.
Do winter festivals require different tank handling? Yes. Below-zero temperatures can freeze open valves and drain hoses. Confirm your winter rental has heated and insulated holding tanks, dump during midday warmth, and use RV-specific antifreeze if the vehicle will sit through overnight lows.
Can I use household drain cleaner in my RV black tank? No. Bleach, formaldehyde-based chemicals and standard household drain cleaners damage tank sensors and lining. Use RV-approved biodegradable toilet chemicals only (Aqua-Kem, Thetford, Elemonte).
What if the festival is too remote to drive out for a dump? Book a larger vehicle. A 130-litre plus tank sleeping four typically lasts a four-night festival without mid-event dumping. See our guide on motorhome size for a family of four at a festival for detail on tank sizing by vehicle class.
Event Campers compares campervan and RV brands across Australia, New Zealand, USA and Canada, including tank size and inclusion detail so you can choose a vehicle that lasts the full festival without a mid-event dump run. Browse our USA RV hire hub, Australia campervan hire hub, New Zealand campervan hire hub or Canada RV rental hub to start.
