PACKAGE : I Bid Document VOLUME : II - Public Health Engineering

Control room & laboratory :
The various process of the plant shall be centrally monitored and control from the
control room of the existing WTP through automation control and visualization
system under separate contract outside the scope of this package.
21.6 Water quality.
The quality of raw water to be treated is given in the following table.
Sl.
No.
Characteristics Unit Results
1. Colour - Normally transparent but turbid in monsoon
2. Odour Unobjectionable.
3. Turbidity N.T.U The turbidity during the period from April
to October is in the range of 350-1500
NTU and during the off monsoon months
ranges between 100 to 350 NTU.
4. PH Value 6.5 to 7.2
5. Conductivity 20.8 to 29.6
6. TDS Mg/l 15 to 53
21.7 Guarantee of final treated water.
The following table gives required Drinking water standards based on Indian as
well as international standards for drinking water.
Sl.
No.
Parameter
India Standard W.H.O. Standard
Maximum Value Maximum Value
1. Turbidity (NTU) 1.0 5
2. Colour (on Pt-Co-scale) 5.00 5
3. Taste Unobjectionable Unobjectionable
4. Odour -do - -do-
5. pH 7.00 to 8.50 7.00 to 8.50
6. Total dissolved
Solids (mg/l)
7. Total hardness
(mg/l )(asCaCo 3
500.00 500.00
200.00 100.00
DTS : Detailed Tender Specification. Page 243