Total residual chlorine
Total residual chlorine was not detected in any water sample.
Total plate count (TPC)
TPC was found to be high in samples collected from Katwaria Sarai (700), Rohini (5,000), Model Town (3,000) and Dwarka (17,000) – all located in Delhi. This means the water in these areas is not very good for direct drinking purpose and requires a water purifier