The recent trend or fashion to make recharge pits everywhere, particularly in cities>>> I think, there is a potential hazardous water may directly contaminate the aquifers. We may left without clean water on both surface and subsurface. Our recharge filters are not fit enough to clean mixture of waters in cities. During my school days, we used drink water directly from hand pump or tap, and from the fields but now trend is changing even in our small village --"" pure water is scarce". In future, we need water filter for every glass we drink.
"" I think solution could be give more importance to treat and protect the natural water depressions ( water bodies), naturally both our surface water bodies and aquifers safe."" That is how it designed ( geomorphology and geology) by nature.
Your concern is valid Mr. Anand. Artificial wetlands are good filter and is often called Natures Kidney. Constructing small wetland strips and allowing water first to pass through it is a good solution. Hyperaccumulator plants can remove pollutants up to 98% by the process of rhyzofilteration.
I heard about some work in Bangladesh where they harvest rainwater from roof tops and there is no report of bacteriological hazard. I'm not sure if there's any treatment in place, but the risk of contamination by animals would seem to be much less (except for birds). See https://www.aqua2015.com/oral.php?codice=37 : Professor Chowdhury Sarwar Jahan. I met him at the IAH congress.
https://www.aqua2015.com/oral.php?codice=37
I agree with th above abswers by the two experrs about artificial or managed aquifer recharge in urban and suburban areas. Our colleagues at CSIR- NGRI, Hyderabad carried out a project called "SAPHPANI" on the same topic. Study shown that the concept of wetland recharge is low cost and efficient way of MAR particularly dealing with contaminated water coming out of city.
Cleaning the possibility of limited natural environments. But the greatest among living substance. Therefore, if you do not help bioplato technology and more intensive cleaning of microorganisms (standard ochisnye structures) is necessary to reduce the pressure on water resources, which means a reduction in population density. Mastering the deserts. Floating island on the waters of a biological sewage treatment good yield. And why not if you have money?
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