I don't think that Honda sells special windshield washer fluid, so I'm assuming you mean coolant.
Honda uses a special coolant that is designed to not have any reaction with the aluminum alloy they use in their engines. You can use a different "safe for aluminum" coolant, but it may not have the same 60k miles/5 year life that the Honda Coolant has.
Do not use plain water. Do not use any cheap anti-freeze. Make sure you use a coolant that is designed for use in aluminum or you can ruin the engine.