Guinea pig water bottles provide the best means of providing water to a pet rodent. Securely attached upside down to a cage, they can’t be tipped over, and they ensure that water does not get contaminated by pieces of food, guinea pig hair or droppings.
Keep your bunny cool in hot temps. Rabbits get heat stroke easily, this gives tons of great ideas on how to prevent that. - I used the frozen soda bottles when raising rabbits in California they worked great!