Couldn’t quite figure out a DIY method. UV light then ceramic charcoal filter?
This is from the EPA, however it is missing the PPM chlorine required for effective treatment.
Oxidants like chlorine, ozone and KMnO4 are effective mechanisms for inactivation of microcystin but chlorine effectiveness is pH-dependent. Different cyanotoxins react differently to chlorine, for example, it has proved to be ineffective for the inactivation of anatoxin-a. However, when pH is below 8, chlorine is effective for inactivation of microcystin and cylindrospermopsin. Ozone is a good oxidant of microcystins, anatoxin-a and cylindrospermopsin, but its efficacy is also ph-dependent and may be affected by the presence of organic matter. Although ozone is ph-independent for the oxidation of microcystin, is pH- dependent for the oxidation of anatoxin-a (pH 7 to 10) and for cylindrospermopsin (4 and 10). KMnO4 is effective in oxidizing microcystin and anatoxin-a (from pH 6 to 8), but is not very reactive with cylindrospermopsin. Chloramines and chlorine dioxide are not effective treatments for microcystin, anatoxin-a and cylindrospermopsin.
Normal Blue Label Bleach and a cheap pool test kit can be used, but again they do not mention the level of chlorination required.
Also they say the following about UV and Activated Charcoal:
UV
Effective of degrading microcystin and cylindrospermopsin but at impractically high doses.
Activated Carbon
PAC: Most types are generally effective for removal of microcystin, anatoxin-a and cylindrospermopsin, especially wood-based activated carbon.
They don't explain what they consider impractical high dose.
I have looked at whole house ozone units to replace our chlorine injector and holding tank (at least bypass). We have a pretty bad sulfur issues with the well and (season dependent) treat our water from 1 to 3 PPM.
I suppose you could also rig up a cheap pool ozone unit to a 5 gallon water jug, but it would be simple to treat the water if there was some guidance on how much was required.
I'm back at the computer and will keep looking. I didn't know about this issue with Lake Erie until today, however as a Prepper I wanted to study up on it. This apparently is not the first time this has happened. Here is one company that does ozone treatment (I use ozone to treat my swim spa)
Ozotech for your reference.
Thanks a lot. I'd appreciate if you would let me know what you come up with.
On another thread I mentioned that I would be diverting my downspouts to the rain barrels by now.
Sawyer mini should be sufficient for rain water but I also have AquaCera CeraCarbs in the bucket set up.
I do wonder how much of their rain contains evaporation from Lake Erie and if so would it contain the toxin?