All the samples were free of any objectionable odour.
All the samples met this requirement.
Total dissolved solids (TDS)
The water collected from Faridabad, Raj Bagh colony in Sahibabad (within the jurisdiction of Ghaziabad), Rampuri (Sahibabad) and Dwarka had high TDS. This means the water is not absolutely safe for drinking directly and requires use of an RO system.
Higher TDS in water is due to dissolved salt in water. Hardness in water up to a certain level is not necessarily dangerous to safety or health, but it does result in expenses by way of removal of mineral buildup on plumbing, and heating elements of household products affects their performance and service life.