These won't fit in the comments unless I spammed it with multiple of them, so I put it here. c:

I love this mod, so here are a few suggestions:
Water pumps - We have water outflow, but not inflow? Tribal intakes are simply an open ended pipe placed facing upstream on a river, industrial intakes are electric-powered pumps that can be placed on any water source except coast.

Maybe even a water tower for maps with no water source, so they can harvest rain water. It should act like a tank that fills up when it rains and slowly empties out when used by sinks and such.

Drinking water and hydration need - Working just like the hunger need, human pawns should have a hydration need. They should have various ways to refill it:
1. Drinking straight from rivers and ponds with an extremely small chance and very small chance to get sick respectively. Drinking from coasts is impossible as the pawns know it would just dehydrate them more.
2. Taking a glass from a new kitchen sink building just like how the nutrient paste dispenser works. (Please make the sink placeable atop More Furniture's counters if this is made.)
3. Just like the sink, a water dispenser for workplaces.
4. Eating meals should increase hydration by something like 20% of their nutrition. Packaged survival meals should also provide 100% of their nutritional value as hydration.

If a pawn fails to keep up their hydration need, they become dehydrated which comes with it a whole host of negative effects. Doctors (or Nurses with Moar Jobs Mod installed) need to provide drinks to patients in bed.

Tribal water intakes would carry with it the chances of getting sick from the river water. Industrial water pumps have filters made with silver (just like sterile tiles) to kill microbes and reduce this risk down to near 0 (but not exactly 0).

In order to pump water from coasts, a desalination plant (kinda like the sewage treatment plant) is needed along the coast and acts as both the pump and filter for the water.

Finally, the sewage outlet should come with a downside. Perhaps make the water downstream of it get slowly polluted (just like in Cities: Skylines) and really unsafe to drink or even swim through. If this is pumped into the water system, people have a very high chance of getting sick when drinking from it. If someone swims through it, each cell they pass through gives them a small but real chance of getting sick, but these cells also have much higher weight than normal water, making pawns really dislike pathing through them.

I should note that the chance of getting sick when drinking from the water system should be equal to the highest chance available from all sources of water. So if you have a water pump on polluted water and a water tower, the chance should be equal to the chance of getting sick from drinking polluted water.

I'm unsure how you'll calculate which end of a river is downstream and which is upstream. On a map with the coast, this should be easy, downstream is where the coast is but elsewhere on a river, I don't know if it's possible. Everything else seems similar enough to already-existing features and features from other mods that it should all be possible.

So the final rundown:

• New Hydration need
  
• Various drinking sources for colonists and prisoners
  
• Chance of falling ill from unclean water
  
• Tribal and industrial water intakes
  
• Dehydration hediff
  
• Desalination plants to get drinkable water from coasts
  
• Polluted bodies of water that colonists can get sick from swimming through or drinking
  
• New research options to unlock everything

What do you think? It seems like all this should maybe be a separate mod as it's a lot of content that may not fit in with this mod for most people.