Microbial Safety Associations in Point of Use Drinking Water of Salyan, Nepal

AUTHOR(S):

Manish Baidya, Shweta Shah, Prativa Poudel, Subodh Sharma

TITLE

Microbial Safety Associations in Point of Use Drinking Water of Salyan, Nepal

ABSTRACT

Drinking water access is increasing but its safety remains a major health concern. Point of Use (PoU) safety of drinking water is important as diarrheal disease is still a major cause of morbidity and mortality especially among under five year's children. Range of factors influences microbial safety of drinking water. Understanding probable factors associated to PoU microbial safety can aid in reducing health vulnerability. A cross-sectional study of 400 households at Salyan district, Nepal was conducted. Household survey, Spot observations, Physical parameters, and Microbial contamination (E. coli), of PoU drinking water were assessed. Physical parameters were within the limit value of National Drinking Water Quality Standards (NDWQS), 2005. Microbial contamination (E. coli) was laboratory confirmed in 191 (50.5%) PoU samples. Uncovered storage vessels possessed twice much as odds risk (OR=2.24; CI=1.208-4.166) of contamination than that of covered ones. Households with water in the dwelling had odds of 52% (OR=0.520; CI=0.332-0.814) greater risk of contamination. Technical and Behavioral factors were evidenced to be associated with microbial contamination in study sample. Access of drinking water alone didn't possessed microbial safety; rather unsafe access increased the risk of contamination. The study indicates that, if water is from safe distribution point and stored in a covered vessel which is easily cleanable, PoU drinking water shall be microbiologically safe

KEYWORDS

Point of Use, Microbial, Drinking water, fecal contamination, Factors

REFERENCES

[1] UNICEF/WHO. Progress on Sanitation and Drinking Water: 2015 Update and MDG Assessment; Geneva, 2015.

[2] Mintz, E.; Bartram, J.; Lochery, P.; Wegelin, M.; Taylor, P. Not Just a Drop in the Bucket: Expanding Access to Point-of-Use Water Treatment Systems. Am. J. Public Health 2001, 91 (10), 1565–1570.

[3] Faldetta, K. F.; Reighard, D. A.; Dickinson, K. L.; Wang, C. Q.; George, D. R.; Benavides, L. R.; Strosnider, W. H. J. Assessing Domestic Water Quality in Belen Municipality, Iquitos, Peru. J. Water, Sanit. Hyg. Dev. 2014, 4.3, 391– 399 DOI: 10.2166/washdev.2014.051.

[4] Clasen, T. F.; Bastable, A. Faecal Contamination of Drinking Water during Collection and Household Storage : The Need to Extend Protection to the Point of Use. J. Water Health 2003, 1 (3), 109– 115.

[5] Wright, J.; Gundry, S.; Conroy, R.Household Drinking Water in Developing Countries: A Systematic Review of Microbiological Contamination between Source and Point-of-Use. Trop. Med. Int. Heal. 2004, 9 (1), 106–117.

[6] Gundry, S. W.; Wright, J. A.; Conroy, R.; Preez, M. Du; Genthe, B.; Moyo, S.; Mutisi, C.; Ndamba, J.; Potgieter, N. Contamination of Drinking Water between Source and Point-of-Use in Rural Households of South Africa and Zimbabwe: Implications for Monitoring the Millennium Development Goal for Water. Water Pract. Technol. 2006, 1 (2), 1–9 DOI: 10.2166/WPT.2006032.

[7] Shrestha, S.; Malla, S. S.; Aihara, Y.; Kondo, N.; Nishida, K. Water Quality at Supply Source and Point of Use in the Kathmandu Valley. J. Water Environ. Technol. 2013, 11 (4), 331–340.

[8] WHO. Guidelines for Drinking-Water Quality, 4th ed.; Geneva: World Health Organization, 2011.

[9] Aryal, J.; Gautam, B.; Sapkota, N. Drinking Water Quality Assessment. J Nepal Heal. Res Counc 2012, 10 (22), 192–196.

[10] RWSSP-GON FOR SSG MEETING 23.9.2014 KATHMANDU; Kathmandu, 2014.

[11] EDCD. Categorization of Districts According to Disease Risk; Department of Health Services, Nepal, 2010; Vol. 68.

[12] Fisher, J. Women in Water Supply, Sanitation and Hygiene Programmes. Proc. ICE Munic. Eng. 2008, 161 (4), 223–229.

[13] Standard Methods for the Examination of Water and Wastewater: Inclding Bottom Sediments and Sludges, 20th ed.; New York: American Public Health Association, 1998.

[14] NDWQS. A Brief Introduction on the Final Version of NDWQS in Nepal. Kathmandu: Task Force for National Drinking Water Quality Standards; Kathmandu, Nepal, 2005.

[15] Roberts, L.; Chartier, Y.; Chartier, O.; Malenga, G.; Toole, M.; Rodka, H. Keeping Clean Water Clean in a Malawi Refugee Camp : A Randomized Intervention Trial. Bull. World Health Organ. 2001, 79 (4), 280–287.

[16] Arnold, M.; Vanderslice, J. A.; Taylor, B.; Benson, S.; Allen, S.; Johnson, M.; Kiefer, J.; Boakye, I.; Arhinn, B.; Crookston, B. T.; Ansong, D. Drinking Water Quaiity and Source Reiiabiiity in Rural Ashanti Region , Ghana. J. Water Health 2013, 11 (1), 161–172 DOI: 10.2166/wh.2013.104.

[17] Gupta, S. K.; Suantio, A.; Gray, A.; Widyastuti, E.; Jain, N.; Rolos, R. Factors Associated with E. Coli Contamintation of Household Drinking Water Among Tsunami and Earthquake Survivors, Indonesia. Am. J. Trop. Med. Hyg. 2007, 76 (6), 1158–1162.

[18] Sheth, M.; Obrah, M. Diarrhea Prevention Through Food Safety Education. Indian J. Pediatr. 2004, 71 (10), 879–882.

[19] Deb, B. C.; Sircar, B. K.; Sengupta, P. G.; De, S. P. S. K.; Saha, N. C.; Ghosh, S.; Mitra, U.; Pal, S. C.; Gupta, D. N. Studies on Interventions to Prevent Eltor Cholera Transmission in Urban Slums. Bull. World Health Organ. 1986, 64 (1), 127–131.

[20] Mintz, E. D.; Reiff, F. M.; Tauxe, R. V. Safe Water Treatment and in the Home. J. Am. Med. Assoc. 1995, 273 (12), 948– 953.

[21] Mazengia, E.; Chidavaenzi, M. T.; Bradely, M.; Jere, M.; Nhandara, C.; Chigunduru, D.; Murahwa, E. C. Effectice and Culturally Acceptable Water Storage in Zimbabwe: Maintaining the Quality of Water Abstracted from Upgraded Family Wells. J. Environ. Health 2002, 64 (8), 15–18.

[22] Chidavaenzi, M. T.; Jere, M.; Nhandara, C.; Chingundury, D.; Bradley, M. An Evaluation of Water Urns to Maintain Domestic Water Quality. In WEDC Conference; Islamabad, Pakistan, 1998; Vol. 24, pp 249–253.

[23] Oswald, W. E.; Lescano, A. G.; Bern, C.; Calderon, M. M.; Cabrera, L.; Gilman, R. H. Fecal Contamination of Drinking Water within Peri-Urban Households , Lima , Peru. Am. J. Trop. Med. Hyg. 2007, 77 (4), 699–704.

Cite this paper

Manish Baidya, Shweta Shah, Prativa Poudel, Subodh Sharma. (2018) Microbial Safety Associations in Point of Use Drinking Water of Salyan, Nepal. International Journal of Environmental Science, 3, 25-34