Summary
Self-supporting community- based mitigation program that provides arsenic safe water using modified dugwells along with public education on water related health effects.
Background
The primary objectives of Project Well are to provide safe water through modern, modified design dugwells, as well as establish and encourage community-based groups, CBGs, to manage these arsenic-free water sources, so that they are sustainable. Project Well also regularly educates the community on arsenic and other health issues.
Millions of people are exposed to arsenic in drinking water in West Bengal and other states in India, and in the neighboring countries, especially Bangladesh. Arsenic is a tasteless metalloid that occurs naturally, in a dissolved state, in some groundwater aquifers in this region. Because it is odorless and tasteless, the water can be heavily contaminated and yet taste fine, as does the crystal clear water from tubewells in West Bengal.
Ingestion of arsenic causes cancers of the lung, bladder, kidney, liver and skin, as well as cardiovascular, respiratory, reproductive, neurological, and dermal effects. Children and those exposed to arsenic in the womb can later grow up to also experience morbid health conditions and cancers caused by exposure.
It has been estimated that in 9 out of 18 districts of West Bengal, more than six million are drinking contaminated water. Project Well developed a self-supporting community-based mitigation program in 2001 to provide arsenic-safe drinking water. There are 22 blocks in the district of North 24 Parganas. PW has been operating in parts of the blocks—namely, Gaighata, Swarupnagar, Deganga and Habra 1. In 2007, dugwells were introduced to the Gaighata block, where deaths due to arsenic poisoning have been reported over the past decade. Next year the area of operation will be extended to the district of Nadia. The detail map of the affected areas is available on the internet >http://www.soesju.org/arsenic/wb3.htm. And also a map of North 24 Parganas is available on the net > http://www.soesju.org/arsenic/wb2.htm
Project Well has constructed 112 dugwells and monitors the project, through monthly surveillance, to ensure efficient use of the dug wells. Special attention is given to the geology in the arsenic contaminated area where construction of deep dugwells is manually difficult. Dugwells are sited at least 100 feet away from latrines. The dugwell design is improved every year based on consumer reports.
As we know from the surveillance program and many dugwells get dry in summer that let us to rethink the design. In 2008, slight alterations were made to the design of the dugwell to allow for construction of deeper dugwells. One deep dug-cum-bore well was constructed. It was a great success as during the driest month of the year, May, there was an ample amount of clean water that was used by 75 people. The new users of these 20 dugwells were trained to maintain the dugwells. No reports of diarrheal disease were received from the consumers; on the contrary, there were reports on improvement of health and the demand for dugwells in some areas increased.
Registers of the consumers of Gaighata phase 2 (2008) project are now available. Out of 20 dugwells three dugwells are not used at all. From 17 dugwells the total number of consumers is 497 and the number of families is 129 and the detail of three dugwells (PW#76, 77 and 92) are not available yet. The detail of the remaining 14 community based groups is: Male: 240, Female: 210, Students: 106 and children < 5 years : 28.
In 2009 twenty more dugwells have been constructed. Five dugwells are shallow and 15 are deep dugwells with the new design. The excavation was completed before the onset of the monsoon in mid June (video will be uploaded shortly) and one dugwell is being used readily which has arsenic level below 10 ppb. The attachment of the hand pump and housing of the 19 dugwells are in progress (the pictures will be uploaded shortly).
Arsenic and bacterial analysis of the new dugwells of 2008 were also conducted (Project Village Report January 2009 is available). We recently wrote and submitted an academic paper entitled “Modifications to improve water quality and increase acceptance of modern dugwells in response to the arsenic crisis in South Asia.” In this paper, we documented our continuing efforts to improve the dugwell water quality such that user acceptance will meet its potential. After receiving feedback from villagers who complained about the chlorine smell of the water from some dugwells, we reduced chlorination doses but increased frequency from once a month to once a week, and also distributed earthen body (‘mawtka’) filters for use with dugwell water. We tested 12 dugwells after the new chlorination regime had been implemented, and found no fecal coliform in any dugwells, and no total coliform in nine of the dugwells, and only low levels of total coliform in three dugwells.
Previously, in 2003, 2006 and 2007, three scientific articles were published in international journals. The article from 2007 is entitled "Arsenic Concentrations and Bacterial Contamination in a Pilot Shallow Dugwell Program in West Bengal, India" from Journal of Environmental Science and Health Part A Toxic /Hazardous Substances & Environmental Engineering (January 2007, Vol.42, No.1) by Meera Hira-Smith, Yan Yuan, Xavier Savarimuthu, Jane Liaw, Alpana Hira, Cynthia Green, Timir Hore, Protap Chakraborty, Ondine von Ehrenstein, Allan H Smith.