As per IS 10500:2012, the permissible limits in absence of an alt
| As per IS 10500:2012, the permissible limits in absence of an alternate source of water for alkalinity in the drinking water respectively will be (in ppm)
A. 200
B. 250
C. 500
D. 600
Please scroll down to see the correct answer and solution guide.
Right Answer is: D
SOLUTION
The permissible limits of various compounds are as follows:
|
Parameters |
Requirement (Acceptable Limit)
|
Permissible Limit in the Absence of Alternate Source
|
|
Total suspended solids |
500 |
2000 |
|
Turbidity (NTU) |
1 |
10 |
|
Colour (TCU) |
5 |
25 |
|
Taste & odour (TON) |
1 |
3 |
|
Total dissolved solids (mg) |
500 |
2000 |
|
Alkalinity |
200 |
600 |
|
pH |
7 - 8.5 |
<6.5 & > 9.2 |
|
Hardness (mg/L) |
200 |
600 |
|
Chloride content (mg/L) |
250 |
1000 |
|
Free ammonia (mg/L) |
0.15 |
0.15 |
|
Organic ammonia (mg/L) |
0.3 |
0.3 |
|
Nitrite (mg/L) |
0 |
0 |
|
Nitrate (mg/L) |
45 |
45 |
|
Fluoride content (mg/L) |
1 |
1.5 |
|
Iron as Fe (mg/L) |
0.1 |
1.0 |
|
Sulphate (mg/L) |
200 |
400 |
|
Calcium (mg/L) |
75 |
200 |