CHAPTER-3 WATER SUPPLY & SANITATION Delhi Jal Board is responsible for procurement of raw water, its treatment and supply of potable water in Delhi. Delhi Jal Board gives bulk supply of potable water to Delhi Cantonment Board and NDMC for distribution in areas under their respective jurisdictions. Delhi Jal Board supplies drinking water through its water supply distribution network in the area of DMCs comprising of Water Treatment Plants, Transmission mains, peripheral lines and internal water distribution network. Delhi is presently serviced from Ganga basin, Yamuna sub-basin, Indus basin and internal aquifers for raw water supply. These sources are continuously under pressure owing to increasing population. It is expected that population in Delhi will grow to 24.88 million in 2021 and 31.68 million in 2030 from current level of 19 million. These factors are causing the decline in per capita availability of water in the state. At present, water supply available for drinking need is 409.15 crore litre (900 MGD) per day which is maximum production from all the sources and water supply network coverage is around 93%. The main surface source of water is Yamuna, Ravi Bias, Ganga and Ground Water is through Ranney Wells and tubewells. At present Govt. has focused to extend piped water supply network in the unauthorized colonies and during last year, the 55 colonies (Project) were provided water supply. The extension of water supply network is not limited to the unauthorized colonies but also to JJ Clusters, squatters developed by DUSIB and other slums. To ensure safe drinking water to all the houses, it is essential to replace the old water lines which are leaking at various places and causing contamination. When we extend water supply to the surrounding unserved colonies it is a fact that the water is being extended at the cost of the existing colonies. Hence improvement of water supply system is also essential. Raw water resources are also limited as per the allocation of the interstate agreement. Hence, in the near future no augmentation is in sight. The rehabilitation and augmentation of water supply through existing Ranney Wells and tubewells rejuvenation of water bodies will be taken up and utilizing treated effluent for non- potable purposes. Raw water for Delhi is drawn from Ganga River (470 cusec), Yamuna River (755 cusec) and Bhakhra Beas Management Board (495 cusec). With the intervention of the Hon’ble High Court in a public interest matter CW(P): 4931/2013, about 80 MGD raw water has become available to Delhi on account of savings in seepage losses after commissioning of Carrier Lined Channel called Munak Canal constructed at the cost of Government of Delhi. It has enabled Delhi to commission three water treatment plants at Bawana, Okhla and Dwarka. About 80 MGD of ground water is also being drawn through Ranney Wells and Tube Wells by Delhi Jal Board to meet the water requirement. As per Yamuna Water Sharing Agreement signed in May, 1994 among the Northern Region States of Himachal Pradesh, Haryana, Uttar Pradesh, Punjab and Delhi, 0.724 BCM Yamuna water was allocated to Delhi. Uttrakhand was part of the 103 Uttar Pradesh at that time. This share is divided into 3 block periods of the year i.e. July to October, November to February and March to June. Delhi is getting its full share of supply for meeting its growing drinking water requirements. Under the MoU of 1994 upstream storage dams in Upper Yamuna Basin are considered essential to conserve and utilize the monsoon flows of Yamuna in a regulated manner. Accordingly, three storage dams have been proposed to be set up at Renuka, on River Giri, in Sirmaur Distt. of Himachal Pradesh, Kishau across River Tons, a tributary of river Yamuna in Uttrakhand and Lakhwar-Vyasi Dam on river Yamuna near Lakhwar village in District Dehradun of Uttrakhand. These dams have been declared National projects and 90% funding of the construction cost shall be provided by Govt. of India and balance shall be contributed by the five Basin States. Govt. of Delhi released an amount of ₹ 215 Cr. to the HP Govt. for land acquisition for Renuka Reservoir. The construction of Kishau Dam through Tehri Hydro Development Corporation and Lakhwar-Vyasi Dam through National Hydro Power Corporation is yet to be started. On sewerage front NDMC and Delhi Cantonment Board, the two local bodies are responsible for providing sewerage facilities in their respective areas. For the area under jurisdiction of Delhi Municipal Corporation, DJB is responsible for providing sewerage facilities. Since more than 95% of the total area is within the jurisdiction of DJB, the total sewage treatment is being taken care of by DJB. The Approved Budget Outlay for Delhi Jal Board in 2019-20 is ₹ 2370 crore, details are as under: [` in crore] Outlay Revised Release Approved Particulars 2018-19 Outlay 2018-19 Outlay 2018-19 2019-20 Water Supply 1258.00 1271.37 1271.37 1463.40 Sanitation 1022.00 1009.63 975.60 906.60 Urgent and Emergent works 70.00 69.00 69.00 -- in Water Supply & Sanitation Total 2350.00 2350.00 2315.97 2370.00 Besides the above, budget of ` 467.50 crore has been provided for water subsidy in 2019-20 under the policy of 20 Kiloliters free water a month scheme which has benefitted around 13.83 lakh consumers. This scheme has encouraged the citizens for conservation of water and inculcates the habit of saving water in order to be eligible for water subsidy. 104 Details of the Projects, Programmes and Schemes implemented by DJB in Water Supply & Sanitation Sector are given below:- A. WATER SUPPLY A. PROVIDING WATER SUPPLY IN UNAUTHORIZED COLONIES Budget Allocation 2019-20 : ` 30000 Lakh (` 15000 Lakh for capital assets) DJB has been striving to improve access of urban poor to piped water supply. While taking up new initiatives for improving the network technically and hydraulically, considered view has been that all sections of society living both in planned and unplanned areas are covered. Now piped water supply facility stands extended to 1337 unauthorized colonies also in addition to the other areas. The work in 27 unauthorised colonies is in progress and tender for 13 unauthorised colonies have been invited. B. REPLACEMENT OF OLD DISTRIBUTION AND TRUNK TRANSMISSION SYSTEM Budget Allocation 2019-20 : ` 20000 Lakh (Loan) It is proposed to replace 200 kms of old ones. Direct and illegal tappings are being removed carefully in a phased manner by making substitute arrangements. This has improved the hydraulics of the system and as a result the supply can now reach many tail end areas. C. IMPROVEMENTS OF EXISTING WATER WORKS Budget Allocation 2019-20 : ` 12000 Lakh (Loan) A detailed plan is being worked out to bring in more areas under the 24X7 supply system. The existing networks are being revamped. Citywide assessment of the supply system is being carried out through an innovative plan "Walk the Line''. This exercise will provide the most comprehensive database about the deficiencies of the network. DJB has been working tirelessly to realize the ultimate dream of the Government to make 24X7 water supply in the city. The scope of work includes replacement and augmentation of existing water network, all house service connections and water meter replacement. The project has an impact on saving of cost to the consumer on installing online booster and energy consumption charges, uninterrupted water supply ensuring portable water supply without any contamination in areas provided water on 24x7 basis and which is gradually being expended to new areas in phased manner. Construction of UGRs in different parts of Delhi for rationalization of water supply. 105 D. RANNEY WELLS & TUBE WELLS IN URBAN AREAS Budget Allocation 2019-20 : ` 5000 Lakh (Loan) About 80 MGD of ground water is being explored through Ranney Wells and Tube Wells by Delhi Jal Board. For augmentation of ground water supply, the work of rehabilitation and automation of tube wells and Ranney wells at Palla has been taken up which will increase water supply from 19 mgd to 35 mgd. Ranney well W1&W2 are also being redeveloped for augmentation of water supply. Numbers of Functional tube wells in different districts are 4187, the details of which are as under:- East and North-East District - 37 West, North-West District and Central & North District - 1273 South and South-West District - 2877 E. STAFF QUARTERS & OFFICE ACCOMMODATIONS Budget Allocation 2019-20 : ` 2000 Lakh (Loan) Consultancy for construction of new office building Ph-III at Varunalaya is in progress. Necessary approvals for building plan are being sought from various departments viz. North Delhi Municipal Corporation, Fire Department, Urban Art Commission etc. The maintenance of existing buildings and staff quarters of DJB are also covered under this Head. F. LAYING OF WATER MAINS IN REGULARIZED UNAUTHORIZED COLONIES Budget Allocation 2019-20 : ` 40 Lakh (Loan) Since, all the 567 regularized colonies have been provided with drinking water supply, provision of ` 40 Lakh has been approved for laying and maintaining water supply networks in regularized unauthorized colonies. G. RAW WATER ARRANGEMENTS Budget Allocation 2019-20 : ` 7300 Lakh (For capital assets) This proposal has been kept in abeyance as per the approval of the Board as 120 cusec water which was earlier proposed to be carried through this 3rd link main is now proposed to be carried through Yamuna main river course. However, work of strengthening of drain no. 6 in the bed of drain no. 8, construction of retaining wall along CLC at Bawana and Sector -18 Rohini to prevent pollution in raw water and replacement of raw water main feeding to Nangloi are being done in 2019-20.