Rain­wa­ter Har­vest­ing is not just an op­tion but a ne­ces­sity: Anil Pha­rande, Chair­man, Pha­rande Spa­ces

Rain­wa­ter Harvesɵng is not just an opɵon but a ne­ces­sity, writes Anil Pha­rande, Chair­man, Pha­rande Spa­ces, an ISO 9001-2000 con­strucɵon firm

MGS Architecture - - Front Page -

Rain­wa­ter har­vest­ing is the real and present op­tion to counter the grow­ing men­ace of rapid water de­ple­tion. It in­volves ac­cu­mu­lat­ing, fil­ter­ing and stor­ing rain­wa­ter to be uti­lized for in­dus­trial and res­i­den­tial pur­poses. Rain­wa­ter har­vest­ing in res­i­den­tial prop­er­ties in­volves trap­ping rain­wa­ter from roofs and di­rect­ing it into un­der­ground stor­age tanks or cis­terns.

Rain­wa­ter is a clean, free source of potable water, and can sat­isfy 50% of a reg­u­lar fam­ily’s water needs. Ur­ban water sup­ply calls for pump­ing sta­tions in ad­di­tion to putting up treat­ment plants and sup­ply con­duits. En­gi­neers and ge­ol­o­gists are con­stantly striv­ing to dis­cover new sources of water. With borewell shafts go­ing deeper in the hunt for more water, sup­ply can be sig­nif­i­cantly sup­ple­mented by rain­wa­ter, which can con­sid­er­ably re­duce util­ity bills. Rain­wa­ter har­vest­ing is equally ap­pro­pri­ate for large man­u­fac­tur­ing units that use sub­stan­tial amounts of water.

A per­fect fall­back po­si­tion

In cities like Mum­bai and Pune, water short­age is mit­i­gated with rain­wa­ter har­vest­ing, which also re­duces the de­pen­dence on dams and water reser­voirs. When rain­wa­ter har­vest­ing sys­tems are used by a suf­fi­cient sat­u­ra­tion of res­i­den­tial build­ings in a city, there is a sub­stan­tial drop in pres­sure on drainage sys­tems, thereby re­duc­ing the pos­si­bil­ity of floods, soil ero­sion, and sur­face run-offs.

Rain­wa­ter har­vest­ing is a per­fect so­lu­tion es­pe­cially in low-ly­ing re­gions, which are usu­ally prone to floods due to over-taxed drainage sys­tems. Rain­wa­ter har­vest­ing sys­tems al­low ground­wa­ter lev­els to recharge, which in turn aids in en­hanc­ing ur­ban green­ery; in fact, this is ac­tu­ally the sole de­pend­able means of hav­ing green places with­out leech­ing away from the direly needed water sup­plies within ur­ban ar­eas.

Sim­ple to set up and use

There is no re­quire­ment for com­pli­cated pu­ri­fy­ing sys­tems, which need to be ap­plied to cleanse ground­wa­ter, since rain­wa­ter is pure. Rain­wa­ter col­lec­tion sys­tems use mod­ern yet ex­tremely sim­ple tech­nol­ogy, and their care is oc­ca­sional clean­ing of pipes and the stor­age tanks to en­sure the rain­wa­ter gath­ered is not con­tam­i­nated.

In­stal­la­tion of gut­ters is step one, to­gether with a fil­tra­tion sys­tem to make cer­tain that de­bris such as leaves will not find their way into the stor­age tanks. Safety pre­cau­tions in­clude lock­ing bars or lids to stop breed­ing of mos­qui­toes or other forms of pol­lu­tion of the stored water. Catch­ment ar­eas in a city may com­prise paved re­gions such as roads and car parks, where water may be picked for sev­eral non-drink­ing pur­poses.

Need for more gov­ern­ment sup­port

Many hous­ing projects don’t have the re­quired rain­wa­ter pits, or lack of space and the over­all de­sign of the project may not make rain­wa­ter har­vest­ing pits fea­si­ble. New projects must, there­fore, be en­gi­neered from the world ‘go’ to in­cor­po­rate rain­wa­ter har­vest­ing sys­tems.

Paved ar­eas and roads in our cities are pre­vent­ing proper per­co­la­tion of rain­wa­ter into the ground, and caus­ing water bot­tle­necks on the out­skirts. Es­tab­lish­ing reg­u­larly spaced rain­wa­ter har­vest­ing pits in ur­ban lo­cal­i­ties must be im­ple­mented, and the city au­thor­i­ties must also ed­u­cate cit­i­zens about the ben­e­fits of rain­wa­ter har­vest­ing.

Newspapers in English

Newspapers from India

© PressReader. All rights reserved.