measure the required parameters of water, following standard methods, to check whether they are in accordance with the standard. 1.3 Why Water Quality Analysis is required? Water quality analysis is required mainly for monitoring purpose. Some importance of such assessment includes: (i) To check whether the water quality is in compliance Water quality standard A level for a water constituent which does not result in significant health risk and which ensures acceptability of the water to consumers. Well (water) A tube well or dug hole put down for the purpose of withdrawing water from the ground. Sometimes fitted with a pump (could be manual or motorized). 3. General clauses Water quality standards are State-adopted or Federally promulgated rules that serve as the goals for a water body and the legal basis for the water quality-based NPDES permit requirements. WQS consist of State-designated uses for water bodies, criteria to protect those uses, an anti-degradation policy to maintain and protect existing uses and Page 8 of 41 Guidelines on Water Quality and Effluent Monitoring 1.0 Water Quality Monitoring Water quality is one of the main indicators of the quality of service provided to the consumer. Water quality has an impact on both the public health and aesthetic value of water as a consumable product. The Water Act 2002 under section 47 requires logical methods to model, predict and forecast the quality parameters of water in Bhutan remain unexploited in Bhu-tan [21]. This study aims to determine the best t model to assess the water quality parameters in Wangchu river which is located in the capital city of the country. Thus, ANFIS, ANN and MLR models were selected for simula- for testing of water quality. Standards prescribed by World Health Organization (WHO) and Bureau of Indian Standard (BIS) for different physico-chemical parameters also have been given for comparing the value of real water sample. KEY WORDS Physico-chemical parameters, Electrical conductivity, BOD, COD, WHO, BIS. INTRODUCTION Water, WHO hopes to stimulate further investigations of such problems as the provision of safe and potable water to all communities, the function of 1 Who Expert Committee on Health Criteria for Water Supplies, R~port (unpublished document). 1 Europelllt &ttllldards for drinki11g•water, 1970, Geneva, World Health Orpnization, 2nd ed. Water Quality Parameters Parameter Pollution Problem Possible Causes Water Temperature Change -Aquatic organisms have narrow optimal temperature ranges -Oxygen is not as soluble in warm water as it is in colder water, low DO levels can stress organisms National Oceanic and Atmospheric Administration Definitions of Water Quality Parameters Important to Koi Ponds By Mike Christensen Ornamental Pond Fish, Inc. 301 Thorn Rd. Port Allen, LA 70767 225-343-4002 Total Ammonia Nitrogen (NH 3-N): This measurement is quite often referred to as just ammonia, but this is technically incorrect. typically, qualities of irrigation water deserving primary consideration include: • soluble salts content • sodium concentration • concentration of toxic elements and compounds • presence and abundance of macro- and micro-nutrients, and trace elements • alkalinity, acidity, and hardness of the water depending on the circumstances, the … typically, qualities of irrigation water deserving primary consideration include: • soluble salts content • sodium concentration • concentration of toxic elements and compounds • presence and ab