In this instalment we will examine TDS (Total Dissolved Solids) ... When the TDS is reduced severely it also affects the Ph of the water, which BIS specifies should be in the range 6.5-8.5.

On Aug. 21, the Pennsylvania Environmental Quality Board published regulations in the Pennsylvania Bulletin establishing new wastewater treatment requirements for Total Dissolved Solids.

The Total Dissolved Solids (TDS) ... All the readings on the TDS meter showed a range of 1,600 to 1,700 per mg/l. No quality control measures are being followed for the supply.