Illustration of seawater intrusion and protection barriers

Featured Groundwater Protection Projects

Todd Groundwater has significant experience in groundwater protection.

  • Soquel Creek Water District — The District required confirmation that pumping reduction estimations needed to prevent seawater intrusion are accurate. Read more …
  • West Basin Municipal Water District — Intrinsic tracers were used to assess travel times at the West Coast Basin Seawater Intrusion Barrier. Read more …
  • Santa Clara Valley Water District — Groundwater vulnerability was assessed for three groundwater basins in Santa Clara County. Read more …
  • Los Angeles County Sanitation Districts — The attenuation of n-nitrosodimethylamine (NDMA) associated with recycled water was characterized through a program of field investigations and modeling. Read more …
  • Central Basin and West Coast Basin, Los Angeles County — These densely populated basins have some of the most significant recycled water recharge projects in the country. Read more …

Groundwater Protection

Groundwater Contamination: recognition… regulation… characterization… remediation… prevention.
We’ve come a long way. Or have we?

It's been more than 50 years since Rachel Carson published her ground-breaking work Silent Spring, exposing the hazards of unbridled chemical use and setting the stage for the environmental movement. It’s more than 40 years since the U.S. Environmental Protection Agency was founded, followed by the boom decades (1970s to 1980s) of federal and state environmental regulation.

Todd Groundwater has been witness to the changing environmental priorities associated with groundwater protection. Dr. David K. Todd founded Todd Engineers (now Todd Groundwater) in 1978 and conducted some of the early research into groundwater pollution, recognizing the limits of the subsurface’s ability to filter pollutants and increasing our understanding of chemical fate and transport processes in groundwater.

Over the years, Todd Groundwater has been involved in environmental site investigation, characterization, and cleanup, including work on some of the nation’s major Superfund Sites. The scientific and industrial communities now understand the groundwater contamination risks associated with chemical handling, storage, use, and disposal. Many sites are now proposing to shut down pump-and-treat systems that have been operating to remediate groundwater for decades.

Nonetheless issues of groundwater contamination continue and threats from inadequately-characterized and remediated sites remain a challenge. The number of new chemicals synthesized and marketed increases annually as does our ability to detect chemicals in trace amounts. The CAS Registry database, at present, contains more than 33 million organic and inorganic substances and we can now accurately analyze at concentrations down to parts per trillion.

Todd Groundwater is experienced in characterizing existing water quality issues, monitoring groundwater quality, and developing plans to prevent future problems. We can assist with:

  • Recycled water recharge impacts and permitting
  • Seawater intrusion
  • Deep well injection
  • Fracking impacts
  • Industrial site releases
  • Flow and solute transport modeling
  • Salt and nutrient management
  • Geochemical analysis
  • Sensitivity and vulnerability studies
  • Litigation support

Contact Todd Groundwater

For more information, contact Todd Groundwater