Rust: Could it be part of your Problem?
This is water that had a layer of floating scum that looked like rust. As you can see in the photo, the entire catch basin is rusty and if you look close in the bottom right hand corner of the water you can see the scum that I took the sample from. (Click Image to Enlarge)
Here are the test results in order of most to least.
| Iron | 210 | mg/L | 210,000 | µg/L | |
| Aluminum | 6.7 | mg/L | 6700 | µg/L | |
| Manganese | 2.6 | mg/L | 2600 | µg/L | |
| Zinc | 0.39 | mg/L | 390 | µg/L | |
| Copper | 0.096 | mg/L | 96 | µg/L | |
| Nickel | 0.038 | mg/L | 38 | µg/L | |
| Chromium | 0.017 | mg/L | 17 | µg/L | |
| Lead | 0.016 | mg/L | 16 | µg/L | |
| Cadmium | 0.00074 | mg/L | 0.74 | µg/L |
Now, maybe you don't test for Iron or Aluminum, but your treatment media might not have a chance to remove what you do test for if it has to work overtime on removing metals you don't test for.
No matter what you test for, Rust is not helping.
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