The URL can be used to link to this page

Home My WebLink AboutSAC presentation - Wojoski - EPA criteriaSummary of EPA’s 2019 Recommended Cyanotoxin Criteria for Human Health Recreational Exposure January 26, 2024 NCDP SAC Meeting Paul Wojoski, DWR EPA’s Human Health Recreational Criteria 2 •Criteria for two cyanotoxins •Microcystins – 8 µg/L •Cylindrospermopsin – 15 µg/L •Based on a recreator / swimmer scenario •Specifically used risk factors for a child (6-10 years old) •Most susceptible population •Toxicity factors derived from multiple studies •Also used in EPA’s Drinking Water Health Advisory •Targets non-cancer effects on liver (microcystin) and kidney (cylindrospermopsin) •EPA’s Recommended Human Health Recreational Ambient Water Quality Criteria or Swimming Advisories for Microcystins and Cylindrospermopsin •https://www.epa.gov/sites/default/files/2019-05/documents/hh-rec-criteria-habs-document-2019.pdf Current Nationwide Adoption Status 3 •For swimming advisories only •NM, SC, SD, Hoopa Valley Tribe, MTIF •No current adoptions for all purposes under the Act •Example language from SC: •R.61-68. G.10.j. Total microcystins-Not to exceed 8 µg/L. For freshwater primary contact recreational use notifications and advisories samples shall not exceed 8 µg/L.