Waterborne disorders of bacterial origin, e. g. typhoid, bacillary dysentery and diarrheaare one of the major global health problems, especially in developing countries like India. Theprevalence of these diseases is largely dependent on the quality of water consumed by people.The qua1ity of water in India is still below the WHO recommendation of zero fecal coliform/100 ml of water.The present study was conducted in a suburb of Aligarh District of U. P. (India). A to-tal of l27o persons were selected by paying horne visits and followed up for a period of oneyear. The study revealed that morbidity was higher in standPOSt group, i. e., 88. 3 % whilein piped water group it was 51. 8 %. The average episode of typhoid for both source of waterwas one while dysentery had 3 average episodes. The average episodes of diarrhea was 4 instand post and 3 in piped water group. In standPost group the rna jority of peop1e, (87. 6 % )were using unsatisfactory water as compared to 74. 4 % for piped water supply. The frequencyof typhoid was 1. 4 % bacillary dysentery 3. 4 % and diarrhea 7. 7 %. The occurrence of wa-terborne disorders of bacterial origin was common for typhoid in the 5-l2 years age groupbacillary dysentery for the l-5 years, and diarrhea for the o-5 years age group. The mor-bidity rate in standPost group was comparatively higher, i. e., 79. 6 %. The frequency for thestandpost group and piped water group for different diseases were, typhoid 1. 1 % and o. 7 %,bacillary dysentery 2. 7 % and 2. 2 %, and diarrhea 6. 1 % and 5. l %, respectively Waterborne disorders of bacterial origin, eg typhoid, bacillary dysentery and diarrhea one of the major global health problems, especially in developing countries like India. Theprevalence of these diseases is largely dependent on the quality of water consumed by people. Qua1ity of water in India is still below the WHO recommendation of zero fecal coliform / 100 ml of water. The present study was conducted in a suburb of Aligarh District of UP (India). A to-tal of l27o persons were selected by fed horne visits and following up for a period of oneyear. The study revealed that morbidity was higher in standPOSt group, ie, 88. 3% whilein piped water group it was 51. 8%. The average episode of typhoid for both source of waterwas one while dysentery had 3 average episodes . The average episodes of diarrhea was 4 instand post and 3 in piped water group. In standPost group the rna jority of peop1e (87.6%) were using unsatisfactory water as compared to 74. 4% for piped water supply. The frequency of typhoid was 1. 4% bacillary dysentery 3. 4% and diarrhea 7. 7%. The occurrence of wa-terborne disorders of bacterial origin was common for typhoid in the 5-l2 years age group bacillary dysentery for the l- 5 years, and diarrhea for the o-5 years old group. The mor-bidity rate in standPost group was comparatively higher, ie, 79. 6%. The frequency for the standpost group and piped water group for different diseases were, typhoid 1. 1% and o. 7%, bacillary dysentery 2. 7% and 2.2%, and diarrhea 6. 1% and 5. l%, respectively