1. Standard Methods for the Examination of Water and Wastewater;American Water Works Association – AWWA,1995
2. Chilton, P.J., Smith-Carington, A.K., 1984. Characteristics of the weathered basement aquifer in Malawi in relation to rural water supplies. In: Challenges in African Hydrology and Water Resources (Proceedings of Harare Symposium, July 1984), IAHS Pub. No. 144, pp. 235–248.
3. Davis, E.L., 2005. Marion Medical Mission Shallow Well Program Health Impact Assessment Report, Malawi, Africa. (accessed 03.01.08.).
4. Environmental Affairs Department – EAD, 2004. National and District State of The Environment Report. Balaka and Zomba State of the Environmental Reports.
5. Kalua, P.W.R., Chipeta, W.P.C., 2005. A Situation Analysis of Water Sector in Malawi. Malawi Water Partnership Draft Report.