Multiple choice How many people have gained access to improved drinking water since 1990? 1.7 billion 2.6 billion 2.3 billion 1.4 billion Reveal answer Fill a bubble to check yourself B Correct answer Explanation Since 1990, global efforts to improve water infrastructure have been substantial. The figure of 2.6 billion people gaining access to improved drinking water sources is the standard statistic reported by the WHO and UNICEF Joint Monitoring Programme.