1. Water Quality Survey of Alternative Safe Water Devices in Emergency Villages in Jessore District Md. Shamim Uddin Senior Chemist Asia Arsenic Network

2. Location of Jessore Jessore

3. Number of Alternative Safe Water Options and their Operational Status OptionNo. of Operational Status(Oct,05) TypesOptions Dug Well8756 (64%) Dug Well with Filter 2020 (100%) PSF248 (33%) PWSS11(100%) RWH11 (100%)

4. Location of Alternative Safe water Options in Emergency Response Villages PSF DW PWSS

5. Introduce of Safe Water Option Dug Well Dug Well with Filter Pond Sand FilterRain Water Harvester

6. Pipe Water Supply System Using Surface Water Ecological Filter Water Supply Tap Supply Tank

7. Objectives To know the water quality of surface and sub- surface water based alternative safe water options in the rainy season. To compare the water quality between rainy and dry season of dug wells.

8. Tested Water Quality Parameter and Methodology ParametersEquipmentSpecification ArsenicAASShimadzu AA-660 IronAASShimadzu AA-660 ManganeseAASShimadzu AA-660 AmmoniumSpectrophotometerHACH: DR-2010 TurbiditySpectrophotometerHACH: DR-2010 Fecal ColiformMembrane FiltrationM-FC Agar

9. Number of Dugwells Number of Dugwell and Turbidity Level (NTU) Total Contamination 0 ~ 56 ~ 1011 ~ 5051 ~ 100>100 561711207128 (50%) Excess Value of Bangladesh Standard : NTU<10 Turbidity (Rainy Season)

10. Number Dug Well Number of Dug Well and Ammonium Level (mg/l) Total Contamination <0.1 0.10 ~ <0.64 0.64 ~ <1.50 1.50~ <5.00 >5.00 56926126321 (38%) Excess Value of Bangladesh Standard : <0.64 mg/l Ammonium (Rainy Season)

11. Number Dug Well Number of dug Well and Concentration range of Iron (mg/l) Total Contamination <0.1 0.10 ~ <0.30 0.30 ~ <1.00 1.00 ~ <3.00 >3.0 56682291120 (36%) Excess Value of Bangladesh Standard : < 1.0 mg/l Iron (Rainy Season)

12. Number Dug Well Number of dug Well and Concentration range of Manganesse (mg/l) Total Contamination <0.1 0.10 ~ <0.40 0.40 ~ <0.70 0.70 ~ <1.00 > 1.00 5692595847 (84%) Excess Value of Bangladesh Standard : < 0.1 mg/l Manganese (Rainy Season)

13. Number Dug Well Number of dug Well and Concentration range of Arsenic (µg/L) Total Contamination <10 11 ~ 50 51 ~ 100101 ~ 150>150 5633202013 (5%) Excess Value of Bangladesh Standard : < 0.1 µg/L Arsenic (Rainy Season)

14. Descriptive Statistic of Different Parameter of Water Quality Between Rainy and Dry Season Statistical Parameter TurbidityAmmoniumIronManganeseArsenic Rainy DryRainyDryRainyDryRainyDryRainyDry Mean 21161.043.312.041.240.4870.3981715.8 Median 10.500.4550.2450.7030.4360.3040.29695.5 Minimum 000.02000.0230010 Maximum 129948.579 16.79 8 9.8093.441.875217263

16. Comments The concentration of Arsenic, Iron, Manganese and turbidity were found relatively high in rainy season in Dugwell water. The concentration of Ammonium was found relatively low in Dugwell water in rainy season

17. Excess Value of Bangladesh Standard : < 10 cfu/100ml Fecal Coliform (Rainy Season) Number of Options Number of dug Well and Fecal Contamination (cfu/100ml) Total Contaminatio n 0 1 ~ 10 11 ~ 50 51 ~ 100 101 ~ 500 >500 5659145131051 (91%)

20. Bacteriological Contamination of Dugwell with Filter and Dug Well with Exceeding Bangladesh Guideline Value ParameterDug WellDugwell with Filter Fecal Coliform Number of Samples 51 (91%) 56 13 (65%) 20

23. Water Quality of Pond Sand filter Number of PSFParameter Excess Value of Bangladesh Standard 8 Arsenic0 (0%) Manganese2 (25.0%) Iron0 (0%) Ammonium1 (12.5%) Fecal Coliform7 (87.5%) Turbidity0 (0%)

24. Comments Dugwell and PSF were found highly fecal contaminated, but Dugwell is more serious. We could not find out effectiveness of site selection of Dugwell in this study. Sand filter seems effective to reduce the Fecal contamination, but not enough. Chlorination is also necessary to produce Bacteriological safe water for dugwell with filter as well as PSF.