Credit goes to KeniaNya for making the original mod, but I'm going to claw back some credit after the 2.0 update:

I'm a bit out of my league on this. With the release of 2.0, the mod became broken in so many ways, it took me three days to figure out how to fix it into a functional state again. It's still not perfect, but it doesn't crash the game and the buildings are visible. At some point, I'm going to need to rebuild the cleaners from scratch, because the original mod I updated uses a lot of functions that are no longer are needed.

=========================================================================================

Updated to work with current versions of Factorio.
Changed MK2 recipe to require more research before unlocking.

I love this mod, so I took it upon myself to make it work again. Arguably, it is a bit over powered with the amount of bricks that can be generated from the pollution filters, but I found it more fun than actually game-breaking. It's a huge quality of life boost being able to set stone pathways everywhere without cannibalizing your ability to make science.

Save the world from pollution, pave the world with pollution!

====Original Mod Description====
A variation of the pollution filter mod.
This mod introduces the water-based pollution filter machine, which uses water jets to capture contamination in the air and produces polluted water, which in turn you need to purify using a chemical plant.
If you delete (or bitters destroy) a pipe, tank or building that has polluted water, a smoke cloud is released, spreading the collected pollution back into the air.

Machines added:
- Water-based pollution filter
- Water-based pollution filter Mk2

Fluids added:
- Polluted water

Recipes added:
- Water to polluted water in the filtering machine
- Polluted water to clean water in the chemical plant
- Solid pollution. When cleaning the water, solid pollution will be created (10% chance). Can be used to craft stone bricks.

Note: When placing the filters, a green grid shows up, indicating the machine's area of effect. The pollution reduction is chunk-based. The grid will align to the player's position (modding limitation)

Feel free to message me if you have any comments, suggestions or ideas.
This is my first mod, I hope someone finds it useful and fun~