amount a chocolate lab urinates

Question
We have a 21 month old chocolate lab that urinates more than I have ever seen a dog urinate.  He gets water when he eats in the morning and in the evening and a little in between.  He also drinks when he is swimming, which is once a day at the most.  He just started going in the house.  He has been house trained for quite a long time.  He had gone on our couch, bed, carpet and huge puddles on the hard wood floors.  I took a urine sample to the vet and they really did not find anything.  A slight raise in his wide blood cell count.  They put him on antibiotics for a bladder infection.  He has been on the medication since Friday.  Last night I took him out around 10 pm.  This morning I got out of the shower around 6:30 a.m. to find that he had urinated a huge puddle downstairs and all around the floor down stairs, up the stairs and into my bedroom.  
I can't believe this is normal.  He is the sweetest dog.  I absolutely love him, but he is ruining my house.  What can I do?  Also, if you have a suggestion what to use to get rid of the urine smell from my floors.  I am having my couch and carpets professionally cleaned, after I cleaned them myself.

Donna  

Answer
I would continue to work with the vet. That isn't normal and surely has a physical cause.  

Let me paste in some material.  

First blot up all the urine you can with a dry towel. Keep moving it and stepping on it until a fresh area stays dry. Many people like vinegar and water to clean up.  Others use an enzyme product such as Simple Solution.