Nope, doesn't need a source. And not unless it says you need a water source, and you are correct only the 2nd and I believe Mei can use all water without a source. Excellent work, moving on..
(Suiton: Nagareru no Muchi) - Water Release: Flowing Whip
Type: Offensive
Rank: C
Range: Short
Chakra: 15
Damage: 30
Description: The user first kneads chakra in their mouth and then, placing their hand on their mouth expels water in the form of a whip which they use to lash their opponent, sending them flying backwards.
(Suiton: Shawā) - Water Release: Showers
Type: Offensive
Rank: C
Range: Short-Mid
Chakra: 15
Damage: 30
Description: The user condenses water vapour in the air above them to generate multiple projectiles of water which shoot at their target with a great amount of force and speed. The user can also shoot a barrage of small water projectiles directly from the swing of their hand.
(Suiton: Kuchi Dangan) - Water Release: Mouth Shot
Type: Offensive
Rank: C
Range: Short
Chakra: 15
Damage: 30
Description: A technique where the user spits out a single senbon-shaped droplet of water with high velocity which is hard to avoid. Once the droplet hits anything, it forcefully bursts and hurts the target. While the technique lacks the force to seriously endanger somebody, it can be used to weaken enemies while they are distracted.
(Suiton: Suishōha) - Water Style: Water Shock Wave
Type: Supplementary/Offensive
Rank: C-B
Range: Short-Long
Chakra: 15-20
Damage: 30-40
Descripton: This technique allows the user after claping their hands together to make a spiralling vortex of water to form around them out of nowhere in a vortex like manner. The vortex then proceeds to cascade into an wave of water that rampages towards the intended target or all around. The size and power of the technique is dictated by the amount of chakra put into the technique, varying from C-rank to B-rank.
Type: Offensive
Rank: C
Range: Short
Chakra: 15
Damage: 30
Description: The user first kneads chakra in their mouth and then, placing their hand on their mouth expels water in the form of a whip which they use to lash their opponent, sending them flying backwards.
(Suiton: Shawā) - Water Release: Showers
Type: Offensive
Rank: C
Range: Short-Mid
Chakra: 15
Damage: 30
Description: The user condenses water vapour in the air above them to generate multiple projectiles of water which shoot at their target with a great amount of force and speed. The user can also shoot a barrage of small water projectiles directly from the swing of their hand.
(Suiton: Kuchi Dangan) - Water Release: Mouth Shot
Type: Offensive
Rank: C
Range: Short
Chakra: 15
Damage: 30
Description: A technique where the user spits out a single senbon-shaped droplet of water with high velocity which is hard to avoid. Once the droplet hits anything, it forcefully bursts and hurts the target. While the technique lacks the force to seriously endanger somebody, it can be used to weaken enemies while they are distracted.
(Suiton: Suishōha) - Water Style: Water Shock Wave
Type: Supplementary/Offensive
Rank: C-B
Range: Short-Long
Chakra: 15-20
Damage: 30-40
Descripton: This technique allows the user after claping their hands together to make a spiralling vortex of water to form around them out of nowhere in a vortex like manner. The vortex then proceeds to cascade into an wave of water that rampages towards the intended target or all around. The size and power of the technique is dictated by the amount of chakra put into the technique, varying from C-rank to B-rank.