If urine is white, it could be chyluria or proteinuria.

Urine turning white? This is unusual or not normal to say the least, but best to go and investigate it by a urine analysis and urine culture. Best to seek the input of your PCP/Family doctor. Possibilities:

-Crystals in the urine from certain foods in the diet coupled with favorable urine pH for such crystallization
-Something you are ingesting (are you taking an OTC?)
-Urine Infection is a possibility, hence a urine culture is needed