Concentrations of two pesticides (diazinon and chlorpyrifos) have been substantially reduced in the SF Bay Delta watershed, however newer classes of pesticides are causing aquatic toxicity in these waterways.
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SF Bay Delta: Lower Feather River & Lower Sacramento River diazinon and chlorpyrifos TMDL (PDF)(7 pp, 478 K,
06/15/2015)
SF Bay Delta Water Quality Progress Report: Total Maximum Daily Load (TMDL) Summary: Lower Sacramento and Feather Rivers – Diazinon and Chlorpyrifos - CA, DPA
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SF Bay Delta: Lower San Joaquin River diazninon and chlorpyrifos TMDL (PDF)(9 pp, 449 K,
06/15/2015)
SF Bay Delta Water Quality Progress Report: Lower San Joaquin River – Diazinon and Chlorpyrifos - CA, DPA
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SF Bay Delta: Sacramento County Urban Streams diazinon and chlorpyrifos TMDL (PDF)(6 pp, 1 MB)
SF Bay Delta Water Quality Progress Report: Sacramento County Urban Creeks – Diazinon and Chlorpyrifos - June 2015
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SF Bay Delta: Sacramento-San Joaquin Delta diazinon and chlorprifos TMDL (PDF)(9 pp, 493 K,
06/15/2015)
SF Bay Delta Water Quality Progress Report: Sacramento-San Joaquin River Delta – Diazinon and Chlorpyrifos - CA, DPA
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SF Bay Delta: SF Bay Urban Streams Pesticide & Toxicity TMDL (PDF)(7 pp, 416 K,
06/15/2015)
SF Bay Delta Water Quality Progress Report: Bay Area Urban Creeks – Diazinon and Pesticide-Related Toxicity - June 2015