ANALYSIS AND EVALUATION OF THE POTABLE WATER NETWORK AND WATER QUALITY IN AL-DIWANIYA CITY

Abstract

In this research, the reality of the potabale water services in AL-Diwaniya City was studied, it in two essential lines:

First, the analysis of water distribution in the city trunk network, by using the program (pipe++) version 1998 to get the quantities and the directions of discharges water. Also it uses head pressure in some related network nodes. Measurements were made, infield, from each region to estimate head in each trunk in order to specify the regions that suffer from shortage in water.

Second, the work to evaluates the suitability of raw and supply water. Samples of potable water were taken from the plant taps and from taps in each region on July 2003. Water born diseases in drinking water were specified during 2002

Statistical analysis was applied to the available data, including the AN OVA test, correlation test, and the results were as follows: -

Raw water and drinking water considered as suitable for human use according to the Iraq and International drinking water standards. Although exceeding the acceptable border for each of (turbidity, hardness, sulphate, Calcium) but all of them are below allowable limit.

• Good significant relation between the percentage of polluted tap water and typhoid during the year of study.
• Residual chlorine for each regions (2.5-0.75) mg/L.