NDLI: Potential toxicity concerns from chemical coagulation treatment of stormwater in the Tahoe basin, California, USA.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Lopus, S. E. Bachand, P. A. M. Heyvaert, A. C. Werner, I. Teh, S. J. Reuter, J. E.
Spatial Coverage	California
Description	Country affiliation: United States Author Affiliation: Lopus SE ( Bachand & Associates, 2023 Regis Drive, Davis, CA 95618, USA. sara@bachandassociates.com)
Abstract	Coagulant dosing of stormwater runoff with polyaluminum chlorides (PACs) is used in numerous waterbodies to improve water clarity, but the potential risks of PACs to aquatic organisms in Lake Tahoe, California are not fully understood. To assess these risks, the USEPA 3-species toxicity test and a non-standard fish test using Japanese medaka (Oryzias latipes) were used to determine the toxicity of PAC-treated and non-treated stormwater samples to aquatic species. Stormwater samples were collected from three sites representing runoff from different urbanized areas in May 2004; samples received coagulant dosing using three different coagulants (JC1720, PAX-XL9, Sumalchlor50) at levels optimized with jar testing. Raw stormwaters were toxic to algae and fathead minnows (mortality). Treatment with coagulants increased toxicity to zooplankton (reproduction) and had no consistent effects on the other toxicity metrics.
File Format	HTM / HTML
ISSN	01476513
Issue Number	7
Volume Number	72
e-ISSN	10902414
Journal	Ecotoxicology and Environmental Safety
Language	English
Publisher	Elsevier
Publisher Date	2009-10-01
Publisher Place	Netherlands
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Environmental Sciences Aluminum Hydroxide Toxicity Environmental Monitoring Methods Fresh Water Analysis Water Pollutants, Chemical Water Purification Animals California Cyprinidae Growth & Development Eukaryota Drug Effects Oryzias Rain Zooplankton Journal Article Research Support, Non-u.s. Gov't Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health

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Potential toxicity concerns from chemical coagulation treatment of stormwater in the Tahoe basin, California, USA.

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