पानी स्वयं अप्काय जीवों का शरीर है| यह अप्काय जीव एकेन्द्रिय है तथा अनगल (बिना छाने) पानी में चलते-फिरते सूक्ष्म त्रस जीव भी बहुत होते है| पोरा वगैरेह बेइन्द्रिय जीव पानी में होते हैं|
अनछाने पानी के उपयोग से या लापरवाही से पानी का उपयोग करने से इन सब त्रस जीवों की हिंसा होती है| चलते-फिरते ये त्रस जीव हमारे दांतो तले चबाए जाने पर अध्यवसाय बहुत क्रुर बनते हैं| अप्काय जीव की हिंसा तो होती ही है, फिर इसके अलावा त्रस जीवों की हिंसा का पाप क्यों बांधना?
गीज़र में भी अनछाना पानी गरम होने से हजारों-लाखों त्रस जीव जलकर राख हो जाते हैं| वॉटर कुलर वगैरह में भी पानी के त्रस जीवों की ज्यादा विराधना होती है| पानी के बर्तन खुले छोड़ने से भी, त्रस जीव उसमें गिरकर मर जाते हैं| पानी अधिक समय तक एक ही जगह पड़ा रहने से उसमें मेंढक-मछली आदि पंचेन्द्रिय जीव भी उत्पन्न हो सकते हैं|
if all the organisms are killed when we boil water, then why do we drink boiled water when we observe fast. and if drinking water from tap is a sin, how can we abstain from it!!
Water should be filtered, boiled and then cooled. When water is heated once, all the countless Jivas (organisms) in it die, and scientifically its proven that in boiled water, organisms will not be born and so will not die for a certain period according to the season.
In unboiled water every moment countless creatures are born and they die. So if once the water is boiled further violence is avoided. The sin of killing organisms is committed only once if the water is heated; and this avoids the committing of that sin again and again. Of course, we should not cause violence to creatures, but we cannot live without water, so our aim should be to at least minimize our sins.
Also, regarding drinking boiled water during fasts, there are many people who abstain from drinking water (chovihar upvas).
Using water from tap is a sin because many living organisms dwell in it and using such water can cause their killing. You can avoid this by sieving the water before using it.
To know more about such similar topics, you can read this book Secrets of Jainism (http://multygraphics.com/books/secrets-of-jainism).
You should also visit a sadhu bhagwan to get an indepth knowledge on this.
I want to ask you that if we boil water we kill uncounted creatures of air also .so how we are sure that we are saving creatures.explain me about air jiv .
In jainism, there are two subjects – Jiv Vichar & Nav Tattva. If you learn these subjects in depth, all your queries will be solved. You can take help of a sadhu bhagwan to learn this subject in detail.