Are there government regulations on Microcystis or Microcystin levels in the United States?
Currently, there are no U.S. regulations for these in drinking water. The World Health Organization has issued a drinking water guideline of <1.0 ug/L for Microcystin.

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1. Is Microcystis toxic?
2. Has Microcystis been found in the Sacramento/San Joaquin Delta?
3. Is it dangerous to drink treated Delta water?
4. Has CCWD found Microcystin in any of its reservoirs?
5. Are there government regulations on Microcystis or Microcystin levels in the United States?
6. Should we be concerned about Microcystis in the future?