# I need to build a water filter, help?

I am trying to make my own Reverse Osmosis water filter, and I need some help. Can someone tell me where I can find parts for it so I can make it myself instead of spending $150 on it? Thank you. ## Answers and Replies Related General Engineering News on Phys.org What brand is your system? We have a reverse osmosis system too and we also were thinking about finding something better and cheaper. My dad just changed the filter, but there is something bad about the current filter, we live in the country and have well water, but some how there are black particles that are still flowing in it, and I'm not sure what it could be. Any suggestions?? Mech_Engineer Science Advisor Gold Member I am trying to make my own Reverse Osmosis water filter, and I need some help. Can someone tell me where I can find parts for it so I can make it myself instead of spending$150 on it? Thank you.
I seriously doubt you would be able to build your own domestic reverse-osmosis system for less than one can be bought these days. Finding the necessary semipermeable membrane material (probably company proprietary information) and putting it in a pressure housing would be a pretty difficult proposition.

We have a reverse osmosis system too and we also were thinking about finding something better and cheaper. My dad just changed the filter, but there is something bad about the current filter, we live in the country and have well water, but some how there are black particles that are still flowing in it, and I'm not sure what it could be. Any suggestions??
probably an activated carbon pre-filter stage. the carbon won't harm you.

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marcusl