Useful OPEN label study from 2018 showing premenopausal women who drink <1.5L/d and w/>=3 UTI's in the last 12 months. Intervention drink >=1.5L (were given this equivalent in bottled water) Outcome: ~50% reduction in UTIs. #medsky jamanetwork.com/journals/jam...

Increased Daily Water Intake i...
Increased Daily Water Intake in Premenopausal Women With Recurrent Urinary Tract Infections

This randomized clinical trial assesses the efficacy of increased daily water intake vs usual fluid intake on the frequency of recurrent cystitis in premenopausal women experiencing recurrent cystitis who drink low volumes of total fluid daily.