INTRODUCTION: Since 2012, licensed California child care centers and homes, per state policy, are required to serve only unflavored low-fat or nonfat milk to children aged 2 years or older, no more than one serving of 100% juice daily, and no beverages with added sweeteners, and they are required to ensure that drinking water is readily accessible throughout the day. We evaluated adherence to the policy after 4 years in comparison to the adherence evaluation conducted shortly after the policy went into effect. METHODS: Licensed California child care sites were randomly selected in 2012 and 2016 and surveyed about beverage practices and provisions to children aged 1-5 years. We used logistic regression to analyze between-year differences for all sites combined and within-year differences by site type and participation in the federal Child and Adult Care Food Program (CACFP) in self-reported policy adherence and beverage provisions. RESULTS: Respondents in 2016 (n = 680), compared with those in 2012 (n = 435), were more adherent to Californias 2010 Healthy Beverages in Child Care Act overall (45.1% vs 27.2%, P < .001) and with individual provisions for milk (65.0% vs 41.4%, P < .001), 100% juice (91.2% vs 81.5%, P < .001), and sugar-sweetened beverages (97.4% vs 93.4%, P = .006). In 2016, centers compared with homes (48.5% vs 28.0%, P = .001) and CACFP sites compared with non-CACFP sites (51.6% vs 27.9%, P < .001) were more adherent to AB2084 overall. DISCUSSION: Beverage policy adherence in California child care has improved since 2012 and is higher in CACFP sites and centers. Additional policy promotion and implementation support is encouraged for non-CACFP sites and homes. Other states should consider adopting such policies.