How much water should I bring per person per day?

A conservative car-camping planning number is 4 liters per person per day in moderate weather and 6-8 liters in hot weather or on active days. That covers drinking (the largest portion), cooking, dish rinse, and basic personal wash. Use the calculator above for a specific trip.

Is the water at developed campgrounds safe to drink?

Usually yes if the spigot is marked 'potable' or 'drinking water'. US Forest Service and National Park Service campgrounds test water at official spigots; private campgrounds vary. Spigots labeled 'non-potable' or unlabeled spigots near restrooms and dump stations should not be used for drinking without treatment.

Can I refill from a creek or lake?

Only after treating it. The CDC recommends one of four methods: boiling for 1 minute (3 minutes above 6,500 ft), filtering with a rated filter, treating with chlorine dioxide tablets, or using a UV pen. Untreated surface water carries giardia, cryptosporidium, and other pathogens that filtration alone may miss - chemical or UV treatment is the conservative add-on.

How heavy is camping water?

1 liter weighs about 1 kg (2.2 lb). A 5 L jug weighs 5 kg (11 lb). A 20 L jerry can weighs 20 kg (44 lb) when full, which is at the upper limit of comfortable single-person lifting. For trips needing more than 40 L, plan to split it across multiple smaller containers or a partner-carry routine.

What is the cheapest reliable water setup for car camping?

Two 5-7 L stackable jugs filled with municipal water from home, plus one reusable bottle per person. Total cost is about $25-40 and covers a weekend for two people. Add a 1 L filter (Sawyer Squeeze) for $40 as backup if a refill becomes necessary mid-trip.

How Much Water to Bring Car Camping

Underplanning water is one of the most common car-camping mistakes - and one of the easiest to avoid with a few minutes of math before the trip. Use the calculator below for a quick number, then refine with the per-use breakdown.

Water-planning calculator

All numbers in liters. The estimate is conservative on purpose - it adds a 15% reserve at the end. For trips longer than 3 days, plan a refill option even if the math says you can carry it.

Enter numbers above to see the estimate.

What the calculator is doing

The numbers come from federal and sports-medicine guidance, scaled conservatively for car-camping conditions. Here is the breakdown per person, per day:

Water needs by use
Use	Per person per day	Notes
Drinking (moderate weather, low activity)	2.5-3 L	ACSM baseline; rises sharply with heat and exertion
Drinking (hot weather, low activity)	4-5 L	NOAA heat-safety guidance
Drinking (hot weather, hiking 4+ hours)	5-8 L	ACSM active-day guidance
Cooking + dish wash	1-1.5 L	Pasta, instant meals, coffee, dish rinse; doubles if cooking from scratch
Personal wash (hands, face, teeth)	0.5-1 L	Lower if using wipes; higher if showering
Pet (small dog or cat)	0.5-1 L	Active dogs in heat need more
Pet (large or active dog)	1.5-2.5 L	ASPCA reference for active warm-weather days
Camp shower (optional)	5-8 L per shower	Solar shower bags typically hold 5 L; expect one short shower per fill

Water needs by use

Drinking (moderate weather, low activity)

Per person per day: 2.5-3 L
Notes: ACSM baseline; rises sharply with heat and exertion

Drinking (hot weather, low activity)

Per person per day: 4-5 L
Notes: NOAA heat-safety guidance

Drinking (hot weather, hiking 4+ hours)

Per person per day: 5-8 L
Notes: ACSM active-day guidance

Cooking + dish wash

Per person per day: 1-1.5 L
Notes: Pasta, instant meals, coffee, dish rinse; doubles if cooking from scratch

Personal wash (hands, face, teeth)

Per person per day: 0.5-1 L
Notes: Lower if using wipes; higher if showering

Pet (small dog or cat)

Per person per day: 0.5-1 L
Notes: Active dogs in heat need more

Pet (large or active dog)

Per person per day: 1.5-2.5 L
Notes: ASPCA reference for active warm-weather days

Camp shower (optional)

Per person per day: 5-8 L per shower
Notes: Solar shower bags typically hold 5 L; expect one short shower per fill

The "personal wash" row above assumes a rinse at a jug, not a shower. If you plan to shower, budget that separately and generously: a camp shower head at a published 0.6 gallons per minute uses about 3.4 litres for a 90-second rinse and 9 litres if you leave the water running for four minutes, so two people showering daily can easily exceed the drinking water for the whole trip. Camping showers compared by water use has the arithmetic by flow rate, along with the 200-foot rule for where the water is allowed to go afterwards.

Containers

For most car-camping trips, two 5-7 L stackable jugs plus one reusable bottle per person is the right starting setup. Jerry cans are useful for longer trips but heavy and awkward at full size. Bladders are great for hikes but not great for vehicle storage.

Water containers for car camping
Container type	Typical capacity	Best for
Reusable water bottle (per person)	1 L	Daytime drinking, refilled from larger jugs
Stackable 5-7 L jugs	5-7 L each	Easy to pour, fit in vehicle organization, refill at spigots
20 L (5 gallon) jerry can or rectangular jug	20 L	Multi-day base camp; heavy when full (~20 kg)
Soft water bladder (Sea to Summit, MSR Dromedary)	4-10 L	Day hikes; packs flat when empty
Vehicle water tank built-in (van or camper)	20-80 L	Permanent install with a pump; outside scope for most car camping
Solar shower bag	5 L	Adds shower capability without a fixed install

Water containers for car camping

Reusable water bottle (per person)

Typical capacity: 1 L
Best for: Daytime drinking, refilled from larger jugs

Stackable 5-7 L jugs

Typical capacity: 5-7 L each
Best for: Easy to pour, fit in vehicle organization, refill at spigots

20 L (5 gallon) jerry can or rectangular jug

Typical capacity: 20 L
Best for: Multi-day base camp; heavy when full (~20 kg)

Soft water bladder (Sea to Summit, MSR Dromedary)

Typical capacity: 4-10 L
Best for: Day hikes; packs flat when empty

Vehicle water tank built-in (van or camper)

Typical capacity: 20-80 L
Best for: Permanent install with a pump; outside scope for most car camping

Solar shower bag

Typical capacity: 5 L
Best for: Adds shower capability without a fixed install

Refill plans for longer trips

Carrying more than 40 L for a trip is heavy and inefficient. Plan a refill instead. The three reliable refill sources are: (1) potable spigots at developed campgrounds, (2) towns and gas stations near the route, and (3) treated water from a creek, lake, or spring. The third only works with proper treatment.

Water treatment methods
Method	Effective against	Speed
Boiling for 1 minute (3 min above 6,500 ft)	Bacteria, viruses, protozoa	Slow; fuel cost matters
Pump or gravity filter (Katadyn, Sawyer, MSR)	Bacteria, protozoa; not most viruses	1-2 L per minute (gravity); faster pumped
UV pen (SteriPen)	Bacteria, viruses, protozoa	1 L in 60-90 seconds; requires clear water and batteries
Chemical treatment (chlorine dioxide tablets)	Bacteria, viruses, protozoa	Wait 30 min; some pathogens need longer
Bottled water from a town	Everything	Trivial; counts on having a town

Water treatment methods

Boiling for 1 minute (3 min above 6,500 ft)

Effective against: Bacteria, viruses, protozoa
Speed: Slow; fuel cost matters

Pump or gravity filter (Katadyn, Sawyer, MSR)

Effective against: Bacteria, protozoa; not most viruses
Speed: 1-2 L per minute (gravity); faster pumped

UV pen (SteriPen)

Effective against: Bacteria, viruses, protozoa
Speed: 1 L in 60-90 seconds; requires clear water and batteries

Chemical treatment (chlorine dioxide tablets)

Effective against: Bacteria, viruses, protozoa
Speed: Wait 30 min; some pathogens need longer

Bottled water from a town

Effective against: Everything
Speed: Trivial; counts on having a town

For cookware and water-related kitchen gear picks, see the camp kitchen hub. For multi-day power setups that can run a small electric kettle or boiler, see the off-grid power hub.

Where to go next

Car camping checklist - water container row in the broader packing list
Camping food without refrigeration - companion to this water plan
Camp kitchen hub - cookware and water-storage picks
Vehicle accessories hub - tank, pump, and shower-bag accessories for long trips