- This company digs bore wells (or makes its franchisees dig borewells) to access water to treat through reverse osmosis to sell. Underground water aquifiers are a national resource and the indiscriminate use of them, particularly in a way that spoils the quality of water is a crime against the country. Even if you pay people to use the water instead of selling it cheap.
- The Sarvajal plants are using the waste water from the reverse osmosis to recharge the ground water. I have no idea why they are doing this, but then I have no idea what else they could do with brine either. Offer it as a substitute in processes that need salt water? My guess is that “recharging the ground water” is just a pretty term for treating a borewell like your gutter, because the brine from the Reverse Osmosis contains the Totally Dissolved Solids from the water that got cleaned as well. In other words, if you are operating on a 50% efficiency (the plants are capable of 65% according to the blog of someone who worked there), then the waste water is TWICE as problematic as the water you began with. Dumping that into the water source makes zero sense.
- But it isn’t like these concerns haven’t been raised. A Business standard article from January says: D C Garg, hydrologist at the district groundwater department, says this process may increase the TDS content in groundwater. But Anuj Sharma, chief operating officer of Sarvajal, argues that only 0.5 per cent of the extracted water is used for drinking. Most is used for agriculture, shows groundwater extraction data. The rather casual answer is worrisome, because it ignores the fact that the Sarvajal plant will make the water worse for those who are not their clients and still use ground water for drinking. A sort of self-fulfilling business if the purification plant is making the water worse than it used to be, so that it can’t be used without their technology. This is rather alarming when you are speaking of the water of an entire area at large. The casual dismissal of concerns about water quality should raise alarms.
- But can the 99.5% of water used for agriculture purposes be dismissed so easily? An irrigation experiment with saline water at different concentrations was carried out over a 7-year period on the same clay–silty soil in the Volturno Valley at Vitulazio to evaluate long-term effects of irrigation with saline water on crops and soil. The abstract of the research paper ends with the following paragraph. Irrigation with saline water led to an increase in ESP and a degradation of the soil physical properties that were estimated indirectly by measuring aggregate stability in water (IASW). The index of aggregate stability in water for the top layer (0–0.15 m) was inversely correlated to the ESP values, even after the leaching due to the autumn–spring rainfall. Can a business be allowed to risk this for the entire region?
- While drinking water does not need approval from environment ministry, how can it be that adding undrinkable water to the water aquifer is not prohibited? The Environment Ministry needs to answer for why it allows clear degradation of the quality of the water across the country so that dependence on commercial methods increases.
Founder at Aam Janata
Vidyut has a keen interest in mass psychology and using it as a lens to understand contemporary politics, social inequality and other dynamics of power within the country. She is also into Linux and internet applications and servers and has sees technology as an important area India lacks security in.
Latest posts by Vidyut (see all)
- Checking the latest provisional data from the Election Commission of India (with map) - June 8, 2019
- Comparison of Constituency-level “votes polled” & “votes counted” data #GeneralElections2019 #InteractiveMap - June 5, 2019
- A scathing indictment of the once respected, now suspected Election Commission of India - June 5, 2019