Are you sure that they are drinking too much water?
Frankly, I’d be more concerned if they weren’t drinking enough water.
You can call the 1-800 number on the dog food bag and ask them for the sodium amounts.
I doubt the food is above the recommended amounts, dogs do need some sodium.
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http://skeptvet.com/Blog/
Otherwise, you are just reading opinions. There are no veterinarians affiliated with this site (DFA).
If you are really concerned, call your vet, he may suggest obtaining a urine sample.
If you can’t get it, the vet can strait cath the pup, only takes a second.
PS: If they are only eating dry food, be glad they are drinking the water, they need it.
