Publication Details
Abstract
This study examines the situation with drinking water quality in water supply systems in the region (centralized water supply systems in the Kashkadarya region). Access to safe drinking water has been a national priority for many years although limited data is available for the region to date. Such a gap creates challenge for policymakers and public health specialist in identifying the exact way in which system is failing and the areas that need immediate attention. To counter this, in 2023, we collected 196 water samples from distribution networks in 13 districts and in the city of Karshi. The methodology used for the analysis of microbiological, organoleptic, and chemical indicators was carried out as per the national standards. A second population survey of 2,050 residents was conducted to explore the extent to which water use conditions of real-world populations differ from the ideal and how public perception varies accordingly. Our results demonstrate that microbiological or organoleptic norms are not met in most districts. Except for Shakhrisabz, Yakkabag and Kitab, where underground water is used, standards are mostly not met. Microbial counts are 3.5 times the norms in a number of other districts, and chlorine-related odor and taste problems is widespread. Mineralization, sulfates, chlorides and hardness are in range and up to some limits also chemical indicators (with exception of orientate detecting very high concentration of iron in Kamashi and Chirakchi). Insight into Water Quality Perception: Survey Response Frequent water supply interruptions especially in summer were identified in the responses as strongly contributing to water quality perception. Results of this nature lay the groundwork for areas requiring targeted investments to improve disinfection systems, treatment facilities, and pipeline infrastructure. Building reliability of water supply and minimizing organoleptic problems would greatly increase the public confidence and health protection in the region.