The popular impression that the groundwater is shielded from contaminants is being replaced with the facts that the water buried beneath is not only susceptible to pollution, it is in many ways more vulnerable than water above ground. Because it is underground and slow moving, groundwater stores pollutants far longer than rivers or air do. Also the remoteness of the groundwater, its slowness to recharge, the enormous amount of contaminants that reach it, and their slowness to breakdown underground-make groundwater pollution virtually irreversible.
Groundwater pollution has proceeded unchecked because we know so little about the water buried beneath our feet. It is extremely costly to adequately track the health of groundwater resources and difficult to clean them. As far as human health is concerned, it may take several years before any health effects show up in the local population.
Kanpur , being one of the most industrialized towns of Northern India , has been a host to industries of diverse nature. Inadvertently these industries have been poisoning the groundwater resources of the town over the years. The highly polluting industries of Kanpur have rendered the groundwater in their respective areas unsafe and unusable. The communities, which live in the vicinity of industrial areas, the industrial dumpsites and in the areas that were used as industrial waste dumpsites in the past but later residential colonies grew up there, are totally dependent on the groundwater for their water needs. People have no choice but to consume the highly chemicalised and poisoned water.
Noraiakheda is one of the areas in Kanpur where the groundwater has been reported to be heavily contaminated with Chromium and other toxicants. The groundwater of the area was reported to be laced with high concentration of Chromium (6.2 mg/l), Iron (351.8 mg/l), fluorides (4.2 mg/l) and pesticides (Lindane 83.47 ng/l, DDT (192.36 ng/l) for the first time in 1997 by Central Pollution Control Board (CPCB). The concentrations of Chromium, Iron, Fluorides and Pesticides were 125 times, more than 1000 times, 4-5 times and more than hundred times respectively than the desirable limits for drinking water.
CPCB through its report recommended that the locations which exhibit highly contaminated groundwater be immediately declared unsafe areas and be supplied with alternative measures of drinking water. CPCB also recommended that a detailed inventory of possible sources of contamination be made and strict regulation for safe disposal of hazardous industrial waste be enforced.
The recommendations made in 1997 are yet to be implemented. The communities continue to consume the toxic water and industries keep dumping their liquid and solid waste indiscriminately.
As per the most recent findings of the CPCB, the groundwater of Noraiakheda is contaminated with different concentrations of Chromium at various depths ranging from 24 ft to 140 ft. The concentration of Hexavalent Chromium has been reported up to 16.3 mg/l that is 1630 times more than the WHO standards (.01 mg/l) for drinking water at a depth of 140 ft in Noraiakheda area. (A list of different concentrations of Tri- & Hexa- valent Chromium at different depths of Noraiakheda area is being annexed)
People in the area get drinking water through hand and submersible pumps from a depth of 60 ft to 120 ft that is absolutely unsafe for drinking. Some of the hand pumps spew yellowish and greenish water. Now health effects are clearly visible amongst the local population. The symptoms of chromium poisoning have started surfacing and undoubtedly an epidemic is under way. People are afflicted with various skin problems and stomach ailments. The chromium pollution is impacting the public health, the environment and the economy.
Recently CPCB signed an MOU with ITRC Lucknow, IIT Kanpur and NGRI Hyderabad for an ambitious project aimed at groundwater remediation in Noraiakheda area. The project is slated to be completed only after 2007. But people cannot wait till the groundwater is remediated. Therefore CPCB should shift its emphasis away from costly end-of-pipe responses to ensuring safe drinking water to communities and preventing the continuing damage in the first place.
Eco Friends has been working in the area for the last two years. We found that communities were quite ignorant about the hidden threat of groundwater contamination. Now they are aware about the problem but feel helpless. Having failed in evoking any response from the local authorities, Eco friends now plans to put up the case before the Monitoring Committee on Hazardous Waste formed by the Supreme Court of India.
Latest Chromium concentrations in the groundwater of Noraiakheda, Panki, Kanpur :
S.No.
|
Place |
Depth
(in meters.)
|
TCR (mg/l)
Trivalent chromium
|
HCR (mg/l)
Hexavalent chromium
|
Times |
1 |
13 2 KV Substation
|
34
|
0.33 |
- |
33 |
36
|
- |
0.02 |
02 |
42
|
0.31 |
- |
31 |
44 |
- |
0.03 |
03 |
|
2 |
UPTRON Estate |
16
|
0.32
|
-
|
32
|
18
|
-
|
0.00
|
-
|
24
|
0.11
|
-
|
11
|
26 |
- |
0.01
|
01 |
|
3 |
Panki Dharam Kanta |
20
|
0.24
|
-
|
24
|
22
|
-
|
0.02
|
02
|
28
|
1.51
|
-
|
151
|
30 |
- |
0.00
|
- |
|
4 |
M/s Skolast Ltd, |
08
|
21.78
|
-
|
2178
|
10
|
-
|
10.60
|
1060
|
26
|
1.01
|
-
|
101
|
28 |
- |
0.00
|
- |
42 |
21.2 |
- |
2102 |
44 |
- |
16.3 |
1603 |
|
Abridged status of groundwater at Noraiakheda showing parameters exceeding ISI norms*
(CPCB report 1997)
Indian Drinking Water Standards
|
Noraiakheda
|
Parameter
|
Desirable Limit
|
Max.
|
Avg. Max.
|
Color (Hz Units)
Turbidity (NTU)
pH
Total Hardness (CaCO 3 )
Iron
Chloride
Alkalinity
Boron
Dissolved Solids
Calcium
Sulphate
Nitrate
Flouride
Phenolic compounds
Pesticides (Lindane)
Pesticides (DDT)
Lead
Zinc
Chromium(hex.)
T-Coliform
|
5
5
6.5-8.5
300
0.3
250
200
1
500
75
200
45
1
0.001
Absent
Absent
0.05
5
0.05
|
120
---
---
4570
351.8
---
500
---
977
---
---
---
4.3
---
201.16
577.1
0.15
---
6.2
130
|
92.5
---
---
1534
121.1
---
404.3
---
858
---
---
---
2.19
---
83.47
192.36
---
---
4.6
41
|
Note: Max : Overall (annual) maximum ; Avg max: maximum of annual average values
Colour : Hazen units ; T-Coliforms : MPN/100 ml ; DDT, Lindane : ng/l
All other parameters in mg/l
*ISI Drinking Water Norms: IS-10500, Oct 1992, First Review.