EPICS Engineering projects in community service

33 Buckets Sensor Development

Meeting time


Project description

In collaboration with non-profit, 33 Buckets, this team is developing an autonomous residual chlorine sensor that utilizes electrochemistry to monitor chlorine levels in water. The sensor will be used as part of a chlorination system to support the disinfection of water in Peru. Water is essential to life and many communities in South America do not have access to a reliable source of clean water. The most common method of killing e.coli and other bacteria is through chlorine disinfection. The challenge is measuring the residual chlorine amount in the water—too much or too little can get the community and children sick. The placement of sensors in the community is another challenge to ensure the water is drinkable throughout the community. The solution is to make an electrochemical chlorine sensor that is more cost effective than any other product currently on the market. An initial and second prototype of a sensor was created in past semesters as a proof of concept, along with a PVC housing unit. This semester the team will undergo in depth testing to calibrate and measure the accuracy of the second prototype. The team has also started researching the most effective area to place the sensor in a water treatment process.