When you go to a methadone clinic that uses that pink liquid methadone do they add water to the pink liquid?

Water in Methadone. If the clinic has a pharmacist, or someone who is qualified to alter the medication, water can be used to reduce the Methadone dose given in the liquid, for those that are tapering. Otherwise, if not done with patient and or clinic knowledge, this would be a federal offense, altering a scheduled substance.
Doubtful. Clinics that dispense medication are very carefully regulated. It would be very hard for them to alter the medication or dosage.