What is Ground Water Impact Assessment Study?
As per the new guidelines notified on 24.09.2020, all industries extracting/proposing to extract ground water in excess of 100 m3/day in Over-exploited, Critical and Semicritical areas shall have to mandatorily submit an impact assessment report prepared by Accredited consultants of CGWA. The proforma for report that was made available on the NOCAP website of Central [...] Read more
Where can RWH be Implemented?
RWH can be done in homes, apartments, societies, schools, institutions, commercial premises and any other space as long as there is a catchment area in the form of a roof or open space to capture the rain. Domestic rainwater harvesting is a relatively simpler affair, where even a rain barrel can serve as a storage [...] Read more
Rainwater Harvesting (RWH) System for Individual Houses
Rainwater harvesting techniques have already been devised and used since ancient times. These were implemented at the community level in areas where rainfall is the only major source of fresh water, mainly in Rajasthan and Madhya Pradesh. In Southern India, rainwater harvesting systems are integrated into their architecture in the form of small ponds/tanks for [...] Read more
Glossary of technical terms used
1. Safe area: Area categorized as SAFE from the groundwater resources point of view, based on the latest groundwater resources assessment carried out jointly by CGWB and State groundwater organizations. 2. Semi-critical area: Area categorized as SEMI-CRITICAL from the groundwater resources point of view, based on the latest groundwater resources assessment jointly by CGWB and State groundwater [...] Read more
Outline of hydro-geological report for obtaining No Objection Certificate for industries
1. Brief about the proposed project giving location details, coordinates, google/ toposheet maps, etc. demarcating the project area. 2. Groundwater situation in and around the project area, including water level, quality data and maps, and quality issues, if any. In the case of mines, groundwater conditions in both core and buffer zone should be described. [...] Read more
Guidelines for construction of piezometers and monitoring of groundwater levels and quality
Piezometer is a borewell/tubewell used only for measuring the water level by lowering a tape/sounder or automatic/digital water level measuring equipment. It also takes a water sample for water quality testing whenever needed. General guidelines for the installation of piezometers are as follows: The piezometer is to be installed/constructed at the minimum distance of 50 [...] Read more
Annual water audits by the industries
Water audit is a systematic process of objectively obtaining a water balance by measuring water flow from the site of water withdrawal or treatment, through the distribution system, and into areas where it is used and discharged. Conducting a water audit involves calculating water balance and use and identifying ways to save water. (Annual water [...] Read more
Is cgwa NOC mandatory?
NOC of Groundwater withdrawal from CGWA or State Groundwater Authority is mandatory for all Industries and Infrastructure projects. CGWA has made a panel of Accredited Consultants who understand the matter technically, administratively, and the applicable laws. Everybody who has to take permission to draw Groundwater is advised to avail services of the Accredited Consultant. The [...] Read more
Guidelines for abstraction of saline ground water
Detailed Guidelines for Abstraction of Saline Ground Water Water having above EC above 5000 µ siemens/cm at 250C is Saline Water. Any user desirous of utilizing saline groundwater is permitted to extract saline ground water and will be exempted from payment of ground water abstraction / restoration charges. However, all such users need to have [...] Read more