Wednesday, June 12, 2019

Testing for Lake Water Quality: What are the parameters that we should check for

If you are trying to rejuvenate a lake and want to know more about what parameters to test for, you can use this blog as a reference. Lakes in Bangalore are often polluted with sewage inflows, industrial effluents and catchment runoffs. To better understand the water quality of the lake is, we have created 4 categories
(A) The basic parameters
(B) Industrial effluents
(C) Pesticides
(D) Testing for the first time

(A) The basic parameters that need to be tested for in a lake area:
  1. pH
  2. BOD
  3. DO
  4. TDS
  5. TSS
  6. Nitrates
  7. Phosphates
  8. Total Coliform Bacteria
  9. Free Ammonia
(B) If industrial effluents are being discharged into the lake, the additional parameters that need to be tested for are listed below. The general standards for discharge of effluents, can be accessed through the following link: http://cpcb.nic.in/industry-effluent-standards/
  1. Arsenic
  2. Cadmium
  3. Mercury
  4. Zinc
  5. Chromium
  6. Lead
  7. Nickel
  8. Iron
  9. Copper
(C) If there is possible contamination from pesticides, the additional parameters that need to be tested for are:
  1. Alpha BHC
  2. Beta BHC
  3. Gamma BHC
  4. OP-DDT
  5. PP-DDT
  6. Alpha Endosulphan
  7. Beta Endosulphan
  8. Aldrin
  9. Dieldrin
  10. 2,4-D
  11. Carbonyl
  12. Malathion
  13. Methyl Parathion
  14. Anilophos
  15. Chloropyriphos
(D) If you are testing the water quality for the first time 
We recommend doing a complete potability test according to the drinking water standards set by the Bureau of Indian Standards (BIS 10500) It can be accessed through the following link: http://cgwb.gov.in/Documents/WQ-standards.pdf

Testing Labs in Bangalore

The cost for water quality testing could vary anywhere from Rs 1,500 to Rs 15,000 depending on the parameters being tested. For more accurate information contact a water quality testing lab and mention you want to test lake water quality, they will send you the list of parameters that they can test in their lab and the respective quotation. Listed below are some of the testing labs in Bangalore along with its links and contact information.


Lab Name
Location
Contact Information
New BEL road
98441 68829
Whitefield
74114 39839
JP Nagar
080 2658 9777
Mahadevpura
96869 77009
Rajajinagar
080 2350 2684
Kempegowda Layout
91523 22165
Laggere
95388 88098
Rajajinagar
080- 23356415
Peenya
080- 2839 2230

Surface Water Quality Standards

Testing the above mentioned parameters will tell you what the quality of the lake water is but to know what standard it needs to meet depends on the end use of the water. The Central Pollution Control Board (CPCB) of India defines water quality from the users point of view as ‘the physical, biological and chemical characteristics of water by which the user evaluates the acceptability of water’. Based on the primary water quality criteria CPCB has classified surface water into 5 classes (based on the expected end use), as shown below in Image 1.

 
Image 1: Classes of Surface Water

To use the lake water as a source of drinking water it needs to meet Class A or C standards, similarly to use the lake water for propagation of wildlife and fisheries it needs to meet Class D standards. As per data collected by the Karnataka State Pollution Control Board, most lakes in Bangalore are classified as D or E. To know more about the different standards as per IS-2296 refer to Table 9.1 in the following link https://elibrarywcl.files.wordpress.com/2015/02/surface-water-quality-standards-as-per-is-2296.pdf


References:


Lakes Water Samples Classification by the Karnataka State Pollution Control Board


Water quality parameters and the importance of each
https://www.epa.ie/pubs/advice/water/quality/Water_Quality.pdf

1 comment:

Aman Patil said...

Hi, thank you for sharing such a informative blog. In many parts of the world, water is not safe enough to drink.I Was working in water testing service form very long time they were tested water from packaged water testing service including ISI consultant service Their are many water testing company but make sure you choose best and good experienced only. Keep sharing.