Is it true that if you drink a lot of water it would help to pass drug test if i have done adderall (dextroamphetamine and racemic amphetamine)?

Not really: Because the metabolites of the amphetamine are detected and it takes time to metabolize the drug.

Not anymore: Diluting a urine sample no longer is a way to get past a drug screening process. The testing has gotten more powerful.

Also: Such behavior will lead to a dilute urine whichcould be noted by astute mro as an attempt to 'avoid' the test.