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Occurrence of microcystins in 33 US water supplies

Haddix, Pryce L. / Hughley, Chaun J. / Lechevallier, Mark W.

Microcystin levels in 33 lake and reservoir raw water sources were monitored biweekly during summer 2003. Hydrophobic C₁₈ chromatography was used for sample concentration and microcystin purification. Total toxin levels were expressed as microcystin‐LR equivalent concentrations using a commercial enzyme‐linked immunosorbent assay. Results showed that microcystins were detectable in most raw water samples, but concentrations exceeded 1 μg/L in only 14 of 206 samples (7%). Stagnant water conditions were associated with the two raw water sources in which average toxin levels exceeded 1 μg/L. When aggregate results were considered, plant effluent samples showed toxin levels nearly 10‐fold lower, suggesting that existing water treatment processes were effective for toxin removal.

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Occurrence of microcystins in 33 US water supplies

Haddix, Pryce L. / Hughley, Chaun J. / Lechevallier, Mark W.

Microcystin levels in 33 lake and reservoir raw water sources were monitored biweekly during summer 2003. Hydrophobic C₁₈ chromatography was used for sample concentration and microcystin purification. Total toxin levels were expressed as microcystin‐LR equivalent concentrations using a commercial enzyme‐linked immunosorbent assay. Results showed that microcystins were detectable in most raw water samples, but concentrations exceeded 1 μg/L in only 14 of 206 samples (7%). Stagnant water conditions were associated with the two raw water sources in which average toxin levels exceeded 1 μg/L. When aggregate results were considered, plant effluent samples showed toxin levels nearly 10‐fold lower, suggesting that existing water treatment processes were effective for toxin removal.

Occurrence of microcystins in 33 US water supplies

Haddix, Pryce L. / Hughley, Chaun J. / Lechevallier, Mark W.

Microcystin levels in 33 lake and reservoir raw water sources were monitored biweekly during summer 2003. Hydrophobic C₁₈ chromatography was used for sample concentration and microcystin purification. Total toxin levels were expressed as microcystin‐LR equivalent concentrations using a commercial enzyme‐linked immunosorbent assay. Results showed that microcystins were detectable in most raw water samples, but concentrations exceeded 1 μg/L in only 14 of 206 samples (7%). Stagnant water conditions were associated with the two raw water sources in which average toxin levels exceeded 1 μg/L. When aggregate results were considered, plant effluent samples showed toxin levels nearly 10‐fold lower, suggesting that existing water treatment processes were effective for toxin removal.

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Title:

Occurrence of microcystins in 33 US water supplies

Contributors:

Haddix, Pryce L. (author) / Hughley, Chaun J. (author) / Lechevallier, Mark W. (author)

Published in:

Journal ‐ American Water Works Association ; 99 ; 118-125

Publication date:

2007-09-01

Size:

8 pages

ISSN:

1551-8833 , 0003-150X

DOI:

https://doi.org/10.1002/j.1551-8833.2007.tb08033.x

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

Water Supply , Lakes , Water Treatment , Toxicity , Public Health , Reservoirs

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