Answer

In Jain Dharma, water is not seen merely as a physical substance. It is also connected with jīva-dayā because Jainism teaches that water can contain countless tiny living beings, especially ap-kāya jīvas — water-bodied beings.

Traditionally, different kinds of water are understood according to their source, movement, purity, and the number of living organisms likely to be present.

Below is a clear list of common water types and their differences.

Different Types of Water in Jain Understanding

• River Water
  Water flowing in rivers.
  It is constantly moving and often carries mud, plants, insects, and many subtle living beings. Because it flows through many places, it may contain many forms of life.
• Lake Water
  Water collected in a lake or large pond.
  Since it remains standing for a long time, it can contain plants, algae, insects, and many microscopic organisms.
• Pond Water
  Smaller stagnant water body.
  Usually considered to contain more visible and invisible life because it is still, warm, and exposed to sunlight, soil, and vegetation.
• Well Water
  Water drawn from a well.
  It comes from underground sources but becomes exposed when stored in the well. Depending on the cleanliness of the well, it may contain subtle life, insects, or organic matter.
• Groundwater
  Water found below the surface of the earth.
  It is generally protected from direct sunlight and outside pollution, but in Jain thought it is still not considered free from living beings. It can contain subtle organisms.
• Spring Water
  Water that naturally comes out from the ground.
  It is flowing and may appear clean, but it still passes through soil, rocks, and living environments, so it can contain subtle life.
• Rain Water
  Water falling from clouds.
  Traditionally, fresh rainwater may be considered different from stored water. Once it touches the ground, roof, vessels, or remains stored, it may quickly become inhabited by subtle beings.
• Sea Water
  Water from the ocean.
  It contains salt and many living beings, from visible marine life to countless subtle organisms. It is not used for ordinary drinking and is full of aquatic life.
• Stored Water
  Water kept in pots, tanks, containers, or vessels.
  In Jain practice, stored water is treated carefully because after some time, living organisms may develop in it. This is why traditional Jain households often filter and use water within a proper time limit.
• Filtered Water
  Water strained through clean cloth or another proper filter.
  This is preferred in Jain practice to reduce harm to visible and subtle organisms. Traditionally, the filtering cloth is also handled carefully so trapped organisms are not harmed unnecessarily.
• Boiled Water
  Water that has been boiled before drinking.
  Many Jains drink boiled water, especially sādhus, sādhvīs, and observant householders. Boiling is connected with discipline, purity, and reducing later growth of organisms when used within the proper time.
• Stale Water
  Water that has been kept too long.
  In Jain practice, stale water is avoided because life forms may increase in it over time. The longer water remains unused, the more concern there is for subtle life.
• Ice or Snow Water
  Frozen form of water.
  From a Jain perspective, it is still related to water-bodied life. Melting, freezing, crushing, or careless use may involve harm to subtle beings.
• Dew Water
  Moisture collected on grass, leaves, or surfaces.
  It is associated with tiny water bodies and can contain subtle life. Walking on wet grass or disturbing dew is therefore traditionally avoided by careful practitioners when possible.

Explanation

The main Jain difference between these waters is not only chemical purity, but also the possibility of life within them.

Important factors are:

• Moving or stagnant: Stagnant water usually develops more organisms.
• Exposed or protected: Water exposed to soil, air, sunlight, plants, or insects may contain more life.
• Fresh or stored: Stored water may develop living organisms over time.
• Filtered or unfiltered: Filtering is used to reduce harm.
• Boiled or unboiled: Boiled water is often used in disciplined Jain conduct.

Spiritual Understanding

Jain Dharma teaches that there are five kinds of one-sensed living beings:

• Earth-bodied beings
• Water-bodied beings
• Fire-bodied beings
• Air-bodied beings
• Plant-bodied beings

Water-bodied beings are called ap-kāya jīvas. Because of this, Jains try to use water with awareness, restraint, and compassion.

This is why traditional Jain practice includes:

• Filtering water before drinking
• Using water carefully and not wasting it
• Avoiding unnecessary disturbance of natural water bodies
• Not drinking water at night in stricter practice
• Using boiled water within the proper time limit

Takeaway

In Jainism, the difference between river water, well water, groundwater, pond water, rainwater, and other waters is mainly understood through the principle of ahiṃsā. Water may contain countless subtle living beings, so a Jain uses water carefully, filters it when needed, avoids waste, and cultivates compassion even toward the smallest forms of life.