Rainwater harvesting keeps tankers at bay in Pune & Bengaluru this summer


Many residential pockets in Pune & Bengaluru which had installed rainwater and surface water harvesting systems are now tanker-free despite the intense summer this year. Residents are now urging more and more residents to also implement such water systems.

Tanker free Pune

Many residents, particularly large residential societies started the process to install the rainwater harvesting system (RWH) and the surface water harvesting system a few years back. What's more, over the years, the residents researched, innovated, and modified both systems for maximum efficiency. Before the system was in place, right from October-November the residents would require at least one tanker a day. Which would normally increase to more than 10 tankers a week during the peak summer. The cost of the tankers would burn a big hole in their pockets. Now, the residential areas are tanker free for 4-5 years now.

Not all residents were ready to welcome the process, initially, there was opposition from some residents who felt it was unnecessary. There is always a doubt among the residents whether they will reap the benefits of their investment. Now the results are overwhelming and more residents are installing the same in their areas.

Bengaluru

The scene is similar in Bengaluru also. The number of requests for water tankers from residents to the Bengaluru water board has gradually come down. The board supplies the same quantity of Cauvery water as they did in 2015. This is due to rainwater harvesting and groundwater recharging, say Bengaluru water board officials.

Many residents have claimed that their dependence on water tankers has come down — from 10 per day to two now and from 150 tankers a month during peak summer to 25 this year. Bengaluru water board estimates that RWH can meet 40% of the water needs of Bengaluru.

According to the Bengaluru water board, over 1.7 lakh properties in the city have installed RWH systems so far and a majority of them are residential. Officials are expecting 25,000 buildings to join in by March 2023.

There has been a keen interest in RWH among the residents. Inquiries have increased but vendors and consultants say the city is a long way from exploiting its full harvesting potential. 

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