The Study of Appropriate Water Supply Quality for Consumption in Tambon La-Ai, Amphor Chawang, Nakhon Si Thammarat Province

Abstract

The purpose of this research was to determine the “appropriate water supply quality for consumption in Tambon La-ai, Amphor Chawang, Nakhon Si Thammarat Province” and to study the physical, chemical and biological characteristics of water supply from water system and to study satisfaction of people to village water system in Tambon La-Ai. Also, it is to seek for developmental approaches of water system in Tambon La-Ai, Amphor Chawang, Nakhon Si Thammarat Province.

The study of water quality was divided into three aspects namely: The physical quality of water was found that the temperature was between 21.90 to 27.70 C, the turbidity was between 0.31 to 6.16 NTU and the conductivity was between 12.90 to 90.95 mV. The chemical quality of water was found that pH was between 5.45 to 9.71, the total hardness was between 3.11 to 27.14 mg CaCO₃/l, Dissolved Iron was between 0.02 to 0.09 mg/l, and Chloride was between 0.54 to 5.56 mg/l. All of the above values comply with the standard of water quality. However, on biological quality of water, Coliform bacteria was between 220 to 1600 MPN/100 ml which exceeds the water quality standard.

The satisfaction of the public to use the services of village water supply authorities was found that people assessment with the behavior of the service staff to collect the water bill range in high satisfaction with (3.55 ± 1.39) in the water supply. Moderate satisfied in solving problems that occur during the use of tap water was range to (2.59 ± 1.19). Satisfaction moderate (2.51 ± 0.89) found that the inconvenience of the service was ease to access water supply. Less satisfied (2.29 ± 0.81) with the flow of the water every day. Less satisfied (1.95 ± 0.87) in satisfying moments for providing water supply every day. The quality of tap water less satisfied (2.10 ± 0.88) for the consumption of the raw water was taken. Less satisfied (2.27 ± 0.77) in the amount of tap water used by consumer. Less satisfied (2.24 ± 0.81) with the quality of the cleanliness of the water supply used. Less satisfied (2.19 ± 0.79) relevant for authorities to pay more attention to the quality of water before serving and to educate the public on health care in improving the quality of water to the household.