How Much Water Should a 30 lb Dog Drink a Day?

30 fl oz/day

30 lb dog · ≈ 3.8 cups · 0.89 litres per day

Daily water for a 30 lb dog

Situation	fl oz	Cups	Litres
Typical day	30	3.8	0.89
Low (wet food diet)	15	1.9	0.44
Hot day / active	45	5.6	1.33
Upper normal limit	60	7.5	1.77

Rule of thumb only; wet food supplies part of the water. Puppies need water available at all times.

How much water should a 30 lb dog drink?

About 30 fl oz (3.8 cups, 0.9 L) a day – the common rule of 1 oz per lb of body weight. Hot weather, exercise, nursing and dry food raise it.

When is drinking too much a concern?

Consistently more than about 60 oz (2 oz/lb) a day can signal diabetes, kidney disease or Cushing’s – see your vet.