Assessment of Water Quality for Some Roof Tanks in Alkharj Governorate, KSA

Journal Article

Mahboob1,4, Khalid Abdullah Al-Ghanim,1 Magda Magdy Abd El-Salam2,3* and Shahid . 2014

• نوع عمل المنشور: KSA; roof tanks; water standards; water storage; water quality.
• رابط المنشور على الويب: Pakistan J. Zool
• الوسوم: KSA; roof tanks; water standards; water storage; water quality.
• المجلة \ الصحيفة: Pakistan J. Zool
• رقم العدد: 4
• رقم الإصدار السنوي: 46
• الصفحات: 1003-1012

مستخلص المنشور

This study evaluates the sanitary conditions of ten selected roof water tanks in Alkharj Governorate,
KSA and examines their water quality. A survey was conducted using a questionnaire to collect information about the
sanitation of these tanks. The physical, chemical and biological parameters of 60 water samples were examined using
standard methods. The survey results revealed that 40% of tanks received unsatisfactory grades. The physical and
chemical analyses indicated that the turbidity and levels of residual chlorine were above the maximum permissible
water limits set by the SASO, WHO and EPA. The Cd, Pb, Fe, and Mn concentrations also exceeded the standards. A
microbiological examination revealed that all tanks were contaminated with heterotrophic bacteria: 80% contained
coliform, 30% contained fecal coliforms and E.coli was not detected. Streptococcus fecalis was isolated from 1.6% of
water samples. Moreover, 60% of the tanks contained algal counts exceeding 103 unit/l. The results support the need
for periodic monitoring and cleaning of these tanks.