The primary objective of this study is to evaluate the impact of installing an automated chlorination system at shared water points on water quality, child health, and costs in a low-income neighborhood in Dhaka Bangladesh. This survey is the follow assessment of water treatment practices, water management, illness related expenditures, water quality, and child health. There are three data sets, one with household survey data, one with chlorine residual data, and one with microbial water quality data. The follow up data sets include 7 rounds of data collection during the follow up period (up to 7 visits per household).