Answer

No. In Jain practice, chauvihar means no food and no water after sunset until sunrise. So if you are drinking water during that period, it is not chauvihar.

Explanation

• Before sunset: water is allowed.
• After sunset: chauvihar means complete abstinence from food and water.
• After sunrise: water can be taken again.

If you are referring to a night-fast, then even plain water is usually avoided.

Spiritual Understanding

Chauvihar is observed to follow ahimsa, discipline, and self-restraint. In Jain Dharma, avoiding water after sunset is part of reducing harm to very small living beings and maintaining inner purity through vrata.

Takeaway

If you are drinking water after sunset, you are not observing chauvihar. If you want, I can also explain the difference between chauvihar, ekasana, and upvas in simple terms.