Due to huge inflow in River Godavari for the last few days which was not witnessed during last 100 years, huge flow of run off about 12 lakh cusecs with high turbidity content reaching 800 NTU (Nephelometric  Turbidity Unit)  more than 20 times normal.

The HMWSSB draws 172 MGD water daily foreshore of Yellampally Barrage near Murmur. This Raw water is pumped to Bommakal and thereby to Mallaram WTP. Treated water is pumping to twin cities for meeting needs of GHMC and enrooted (ORR) villages. These sudden surge inflows of Godavari River resulted increase of turbidity twenty times against normal turbidity level of 8 to 10 NTU.

With the previous experience, the entire Engineering wing of Transmission circle chalked out war footing prgramme. This critical situation appraised to MD, HMWSSB who immediately approved a budget of Rs. 20 lakhs under Emergency sanction to meet current situation and without disruption of operation for procurement of Poly Aluminum Chloride (PAC). After required chemicals like procured of PAC from other states was much effective compared to regular ferric Alum.

Additional arrangements were also made deploying technicians to monitor turbidity levels of raw water having Ploy Aluminum Chloride dosing arrangements. This combined efforts  resulted  in maintaining  normal turbidity levels in Treated water without any interruption in treated water supply to twin cities has been achieved.