Mercury TMDLs are being implemented, however mine remediation actions and developing new methylation reduction technologies are solutions that require decades before mercury concentrations in fish tissue would achieve water quality goals.

• SF Bay Delta: Clear Lake Mercury TMDL (PDF)(7 pp, 448 K, 06/15/2015)
  SF Bay Delta Water Quality Progress Report: Clear Lake – June 2015
• SF Bay Delta: Cache, Bear, and Sulphur Creeks & Harley Gulch Mercury TMDL (PDF)(10 pp, 469 K, 06/15/2015)
  SF Bay Delta Water Quality Progress Report: Cache Creek, Bear Creek, Sulphur Creek, and Harley Gulch – Mercury - June 2015
• SF Bay Delta: San Francisco Bay Mercury TMDL (PDF)(13 pp, 857 K, 06/15/2015)
  SF Bay Delta Water Quality Progress Report: San Francisco Bay Mercury – June 2015
• SF Bay Delta: Guadalupe River Watershed Mercury TMDL (PDF)(11 pp, 482 K, 06/15/2015)
  SF Bay Delta Water Quality Progress Report: Guadalupe River Watershed – Mercury. This TMDL addresses seven waterbodies in the 170 square mile Guadalupe River watershed: Guadalupe Reservoir, Calero Reservoir, Almaden Reservoir, and Lake Almaden as well as Guadalupe Creek, Alamitos Creek, and the Guadalupe River upstream of tidal influence.
• SF Bay Delta: Sacramento-San Joaquin Delta Estuary Mercury and Methylmercury TMDL (PDF)(9 pp, 656 K, 06/15/2015)
  SF Bay Delta Water Quality Progress Report: Sacramento-San Joaquin Delta Estuary – Mercury and Methylmercury. The Sacramento-San Joaquin Delta Estuary (Delta) is made up of numerous river channels and islands hydrologically-connected through surface waters totaling approximately 738,000 acres in six central California counties. Sources of mercury come from both the legal Delta as well as the larger Delta watershed.