미국환경보호국(EPA)은 지난 17일 공식적으로 사이아노톡신(cyanotoxin)·미소시스틴(microcystins)·실린드로스퍼맙신(cylindrospermopsin)과 관련된 건강주의보를 발표했다. 이러한 비(非) 규제수준은 건강에 미치는 영향이 중요하지 않도록 기대 이하로 설정됐다.

 

EPA는 최신 위험평가과정 중 하나로 사람의 나이에 따라 6살 미만의 영아와 6살 이상의 영아 및 성인으로 구분해 서로 다른 두 개의 건강주의보를 발표했다.

 

 

 

On Wednesday, June 17, the Environmental Protection Agency (EPA) officially issued health advisories for the two cyanotoxins microcystins and cylindrospermopsin. These non-regulatory levels are set below the expectation of no health impacts.

 

As part of an updated risk assessment process, EPA has issued two different advisory levels based upon a person's age -- one level for children under six years old and a second level for children six and above and adults.

 

The health advisory levels, which are based upon 10 days of exposure, are:
·0.3㎍/L for microcystin and 0.7㎍/L for cylindrospermopsin for children under six

·1.6㎍/L for microcystin and 3.0㎍/L for cylindrospermopsin for children over six

 

Supporting these numbers, EPA has issued two separate documents. The first (here) covers the health advisories themselves, which explains the basis upon which EPA developed the levels. The second (here) is a support document detailing EPA's recommendation to utilities in managing cyanotoxins.

 

Utilities and those interested are also encouraged to review the recently published AWWA and Water Research Foundation's "Water Utility Manager's Guide to Cyanotoxins" (here), which is available as a free download.

 

[출처 = Water World / 2015년 6월 18일]