Heads up: Some links on this page are affiliate links. If you buy through them, we may earn a commission at no extra cost to you. As an Amazon Associate, we earn from qualifying purchases. Full disclosure
Testing note: We haven’t hands-on tested these toilet seats and bags. Specs come from Camco, Reliance and the Amazon listings, checked Oct 28, 2026.
Bottom line: No running water doesn’t always mean no toilet. If the drain side still works (city sewer or a gravity septic system), pour 1 to 2 gallons of stored water into the bowl to flush (OWASA). If sewage is backing up or a grinder pump has no power, don’t flush. Use a bag toilet: a 5-gallon bucket or the empty bowl lined with two bags and absorbent (WA DOH).
Our pick
Camco Bucket Toilet Seat with Lid: snaps onto a standard 5-gallon bucket, with an odor-containing lid and 3 waste bags with powder that solidifies liquids, per the listing. Sold by Amazon.com when we checked.
Why the water stops
- Well pump with no power. No power, no pressure. Our well pump guide covers running one on backup power.
- Frozen or burst pipes. Shut the main and the toilet may get one flush from the tank. See our frozen pipes guide.
- Main breaks and boil-water outages. With the water off, the tank allows one normal flush (OWASA).
How much water a flush takes
- New toilets use 1.6 gallons a flush or less. That’s the federal limit. Older toilets can use up to 6 gallons, and WaterSense models 1.28 (EPA WaterSense).
- A 5-gallon bucket is about three tank flushes at 1.6 gallons (our math). Pouring straight into the bowl often takes a gallon or two (NPS).
- Store flush water separately from drinking water. Fill buckets or the tub before a planned outage (OWASA). Our water storage guide covers how much to keep.
How to bucket flush
This works when the water is off but the drain works.
- Pour 1 to 2 gallons into the bowl, steadily, then faster, so it pulls the waste down (OWASA, NPS).
- Or refill the tank by hand to the normal water line, then flush as usual (NPS).
- Stop if the water rises without draining (NPS).
- No grease, food scraps or wipes in flush water (NPS).
The NPS guide is for standard gravity toilets. If your tank has a sealed pressure unit, check with the maker first.
When NOT to flush
- Grinder pump or lift station with no power. The pump can’t run, so keep water use to a minimum to prevent a backup. Its alarm won’t sound without power (Kent County, MD).
- A septic system that needs power. Its pumps won’t run in an outage, so the tanks act as holding tanks. Hauled flush water can work for a while, but how long depends on how full they were. Keep water use low. Gravity septic keeps working (WA DOH).
- Signs of trouble. Toilets and sinks drain slowly or floor drains overflow. Flush as little as possible or use a temporary toilet (CDC).
- Your utility says stop. Follow the notice.
Not sure what you have? Ask your sewer utility or septic service before the next outage.
Set up a bag toilet
- In the toilet: shut the toilet’s water valve, flush the bowl empty, then line it with two kitchen garbage bags and add kitty litter, peat moss or lime (WA DOH).
- Or a 5-gallon bucket with a toilet seat, lined with two heavy-duty bags and some cat litter or sawdust. Keep the lid closed (King County).
- Change the inner bag with disposable gloves on, tie it off and double-bag it (OSU Extension).
- Store full bags in a lidded can in the garage or outside, away from kids, pets and wildlife (WA DOH). Put them out with regular trash only if local officials say it’s OK (King County).
Keep hands clean
- Soap and water first. No water? Use hand sanitizer with at least 60% alcohol and rub about 20 seconds. It works poorly on visibly dirty hands (CDC).
- Wipes, garbage bags and ties are on Ready.gov’s basic kit list for personal sanitation (Ready.gov). Add them to your 72-hour kit.
Our emergency toilet picks
A seat for any bucket, a complete kit, and bags to restock. Check the seller and stock before you buy, since both can change.
Our pick: Camco Bucket Toilet Seat with Lid
Turns a standard 5-gallon bucket (not included) into a toilet. The seat snaps onto the rim, the lid contains odors, and it comes with 3 waste bags with absorbent powder that solidifies liquids, per the listing (Amazon listing). Sold by Amazon.com on Oct 28, in stock.
Full listing specs: Camco Bucket Toilet Seat with Lid (41546)
- Fits: Standard 5-gallon bucket (not included)
- Seat: Snaps onto the bucket rim
- Lid: Odor-containing lid
- Material: Polypropylene blend
- Included: Seat with lid, 3 toilet waste bags with absorbent powder
- Warranty: Limited 1 year
Complete kit: Reliance Luggable Loo
A 5-gallon bucket-style toilet with a snap-on seat, cover and lid and a metal carry handle. It weighs 3 lb, and the listing notes a 5-year manufacturer’s guarantee (Amazon listing). Sold by a third-party seller on Oct 28, in stock.
Full listing specs: Reliance Luggable Loo
- Capacity: 5 gallons
- Includes: Bucket, snap-on seat and cover, lid
- Handle: Metal
- Weight: 3 lb
- Guarantee: 5-year manufacturer guarantee
Bags to restock: Camco Toilet Waste Bags, 10-pack
Double-bag, leak-proof design. The inner bag holds a powder that gels liquids. Camco says they fit its bucket toilet or most 5-gallon buckets (Amazon listing). Ships from and sold by Amazon.com on Oct 28, in stock.
Full listing specs: Camco Toilet Waste Bags (41548)
- Count: 10 bags
- Design: Double bag, leak-proof
- Absorbent: Inner bag powder gels liquids
- Fits: Camco bucket toilet or most 5-gallon buckets
- Listed capacity: 2.6 gallons
- Warranty: 1-year limited
More for when the water’s off: our well pump guide, frozen pipes guide, water storage guide and 72-hour kit checklist.
FAQ
How much water does it take to flush a toilet with no running water?
Newer toilets use 1.6 gallons a flush or less, per the EPA, and older ones up to 6. Pouring 1 to 2 gallons straight into the bowl usually flushes it, as long as the drain works.
Can you flush the toilet when the power is out?
On city sewer or a gravity septic system, yes, by pouring water into the bowl or refilling the tank. A grinder pump can’t run without power, so don’t flush. A septic system with a pump holds a limited amount until power is back, so keep flushes to a minimum.
What do you do with emergency toilet waste bags?
Tie off the inner bag with gloves on, double-bag it and keep it in a lidded can in the garage or outside, away from kids and pets. Put it out with regular trash only if local officials say it’s OK.
Specs checked Oct 28, 2026, from the Amazon listings. Guidance from EPA WaterSense, OWASA, the National Park Service, the CDC, Washington State DOH, Kent County, MD, King County, OSU Extension and Ready.gov. Flush counts are our own math. We haven’t hands-on tested these products.