With No Man's Land installed, its new swamps give Dirty water, the sea at its Mud Beach is salty, its drinks and pears restore thirst, and sipping from its milk cauldron counts as drinking milk.
Supported versions
NeoForge, Minecraft 1.21.1, with 
No Man's Land 1.5.12. It has no version for any other loader or Minecraft version, so they ignore it.
Water in its biomes
| Biome | Water |
|---|---|
| Bog, Bayou, Dark Swamp | Dirty, the same as a vanilla swamp |
| Blackwater River | Dirty: it is a slow swamp river, not a clear one |
| Mud Beach | Salty, the same as any other beach |
| Desert River, Lush River | Murky, the same as any other river |
How grades are worked out is on the Water Purity page.
Milk cauldron
A milk bucket poured into a cauldron gives four sips from an empty hand. Each sip restores a quarter of what the milk bucket restores, so a full cauldron is worth about one bucket.
Drinks and food
| Item | Thirst | Quenched |
|---|---|---|
| Pear Juice, Witch Stew | 6 | 4 |
| Maple Syrup Bottle, Pear, Syruped Pear, Honeyed Apple | 2 | 0 |
| Pesto Bottle | 1 | 0 |
Pear Juice, the Pesto Bottle and Witch Stew only exist with Farmer's Delight installed. Meat, fish, nuts, bread, pasta and cakes restore no thirst. Every value can be changed in the config.