Introduction

The Government of Assam is implementing the World Bank assisted Rural Water Supply & Sanitation Project in Kamrup Metro district for providing potable drinking water to the villagers in 24/ 7 model, with the support from the World Bank. This report will reflect about the aims & objective of the proposed scheme prepared incorporating the comments / observations on the preliminary report and discussions at various levels at different forums.

This Composite Water Supply Scheme for sustainability and quality in Kamrup District will be implemented in two Zones. Zone-I will cover the habitations of Chandrapur Development Block and Zone-II will cover all the habitations under Dimoria Development Block.

In zone-I , 4 nos. of existing rural water supply scheme out of 25 have already crossed 15 years of commissioning and 2 nos. are more than 30 years commissioning. All these schemes were designed for a period of 15 years with 40 lpcd level of supply. Similarly in Zone-II Out of the 105 existing schemes, 14 nos. has already crossed its life design life span i.e 15 years and 5 nos are more than 30 years old. The level of service in accordance to the need of the consumers cannot be maintained by these old schemes.

The quality affected habitation in the project area are as follows :

Affected Quality of Water	Zone-I	Zone-II
Iron affected	29	79
Fluoride affected	11	18

The concentration of fluoride level in certain areas like Mathgharia is as high as 9.2 ppm and several residents of the locality exhibits fluorosis symptoms like melting of the teeth as well as skeletal deformity is prominent amongst the children of age 6-8 years. The fractured rocky layer with discharge ranging from 7500LPH – 15000LPH is to be tapped as ground water source and inadequacy is experienced to run the scheme. Moreover, cynical behaviour of fractured zone are very often found to be too expensive.

In the context of the above, and water being a very basic need, the Public Health Engineering Department, Government of Assam has decided to go for a Large Multi village rural water supply scheme in Kamrup District under World Bank assisted RWSS-LIS project in Assam.

 Hence, it is of utmost important to switch over to alternative safe source and it is proposed to cover the entire area with water from a surface source namely River Brahmaputra and River Kolong flowing in the vicinity of the project area.

The River Kolong is flowing along the side of the command area which has substantial surface flow throughout the year to draw required quantity of water for the proposed water supply scheme even in the lean period. Average Run-off of River Kolong is 48.5 Cumec. Intake arrangement with floating barge has been considered for withdrawal of raw water from river Kolong at Singimari for Zone-I and  Amora Pathar for Zone-II respectively.

In addition to that NNP project will support the software activity for sanitation which will be carried out under world bank project areas.

Project Implementation

           To implement the said project, World Bank support the scheme under Neer Nirmol Poriyojana in the Kamrup(M) district for Dimoria and Chandrapur Block. A Project implementing unit is formed for planning , implementation & guideline formulation for operation & maintainance. This unit is formed as per Govt norms under EE, PHED, Guwahati Div-1 with some designated engineers of concerned department and domain specialist support staff. Similarly to implement the project in GP’s the GPWSC committees are formed in each and every GP’s under project areas and MVWSC is at district level to monitor the activity of GPWSC and act as project governing committee.

               

Fund provision for the proposed mega water supply project under NNP, the total project cost will shared between world bank , Govt of India, Govt of Assam and the Community belong to the project areas. World Bank share is 50%, Central Govt Share is 44.5%, state govt share is 4.5% and community share is 1%. The community share will be beared by every beneficiary under the project areas.

               

The Neer Nirmol Pariyojna not only covers the house hold level piped water supply connection but it also covers all the institutional level establishment .The project will also cover sanitation and facilitate development of proper Solid and liquid waste management system in the project area. For this reason it is important to collect all the detail information of every house hold regarding socio-economic & socio-cultural status. Regarding that a proper base line survey is conducted with the GPS co-ordinate system under the project area. The survey is done by the enumerators (2 Persons from each GP) in their respective GP selected by the GPWSC committee. The first phase of base line survey is completed in the month of Aug/2016.

 Community Contribution collection process initiated by the Deptt in the respective GPs under project areas through awareness generation to sensitize the community to well versed about the project and secondly regarding the guideline of the collection process. It was conveyed to the community that how much vital is the contributing amount for implementation of the NNP Project.  To collect the contribution and keeping the records community mobilizers are engaged at GP wise (2 Nos from each GP) through the GPWSC following proper selection process.  The community mobilizers are properly trained toward conducting IEC, IPC for ensuring the community participation. They were oriented through some inclusive training structured by the DPMU team to orient them toward awareness generation. The collection process was started during the month of Mar/2016. 

The collected contribution of the GP regularly deposited by the Mobilizer to the Bank & concern GPWSC maintain the cash book for proper handling of the capex contribution. DPMU initiate the process of bank account opening for each GPWSC committee.

No’s of activities carried out by the community Mobilizers to achieve the target. The activities undertaken by them geared up the community participation process in the project area.

Type of treatment for Drinking Water

Since source of water for the proposed project is surface water to be tapped from rivers, conventional treatment process having facilities for Aeration – Coagulation – flocculation – Filtration, followed by Disinfection is proposed. Along with the treatment plant there shall be a quality monitoring laboratory. The treatment plant shall be operated for 20 hours a day as per the engineering matrix fixed by WB Technical consultants.

Project Design

          With the support of World Bank the Deptt prepared the design of the Composite Water Supply Scheme for Dimoria and Chandrapur Block. A plan (Detail Project Report) was initiated during the year 2012 as per projected population on the basis of 2011 census data. The water supply arrangement has been planned as per the standard norms to ensure 24x7 water supply for the proposed layout. Design parameters used have been adopted according to the guidelines provided in CPHEEO manual. The water distribution network is being designed with  LOOP Software.

The present proposed Scheme is designed to cover all streets, lanes, by lanes and localities of the habitation with safe dependable local be pumped into ESR proposed within the habitation through pumping main and from the ESR, the water will be supplied to the end users through Gravity main (distribution main) with a ferrule provision outside each house, to enable the house holds to get their house hold connection through the GPWSC  and MVWSC concerned.

 

Infrastructure Development

         The Composite Water Supply Scheme for sustainability and quality in Kamrup District as mentioned above is divided into two zones:

i)                    Zone –I comprising of Chandrapur Block.

ii)                   Zone-II comprising of Dimoria Block.

The intake location for Zone-I will be near Gobardhan bazar and the main source will be river Kolong from where raw water will be pumped to the WTP site, located at the hill top of Tatimara village for treatment. The total capacity of WTP under Zone-I is 5 MLD and the whole treatment process comprises of:-

i)                    Pre-sedimentation.

ii)                   Aeration.

iii)                 Coagulation

iv)                 Floculation.

v)                  Filtration.

vi)                 Chlorination.

6 nos. of GSR’s located at three elevated pinpoints will serve the purpose of distribution

through gravity to the entire Chandrapur block serving the purpose of providing potable drinking water to all the households throughout 24x7.

                The intake location for Zone-II will be near Kolongpar bazar and the main source will be river Kolong from where raw water will be pumped to the WTP site, located at the hill top of Gomoria village for treatment. The total capacity of WTP under Zone-I is 17.80 MLD and the whole treatment process is same as that of Zone-I. 29 nos. of ESR’s will serve the purpose of distribution through gravity to the entire Dimoria block serving the purpose of providing potable drinking water to all the households throughout 24x7.

                A total of 38,000 households (which may vary after detailed survey) will be benefited by the entire project.

                At present 35-40% of construction works has been completed at both the WTP sites and laying of raw water pumping main is going on in both the zones.