State Water Board Issues Revised Rule for Definition of Wetlands and Dredge/Fill Procedures

Elizabeth “Betsy” Lake  HIGHLIGHTS: The California State Water Resources Control Board (State Water Board) has published its final draft proposed rule for a “State Wetland Definition and Procedures for Discharges of Dredged or Fill Material to Waters of the State” (Proposed Rule). The Proposed Rule includes a definition of wetlands applicable to State Water Board … Continue reading “State Water Board Issues Revised Rule for Definition of Wetlands and Dredge/Fill Procedures”

Like Swimming Through a Pharmacy

Researchers found a wide array of contaminants in Puget Sound fish  By Pippa Wysong March 30, 2016 The fish in Washington State’s Puget Sound are on drugs. In juvenile chinook salmon and staghorn sculpin, researchers recently found traces of more than 40 different contaminants, including pharmaceuticals, personal care products, and industrial chemicals. The presence of … Continue reading “Like Swimming Through a Pharmacy”

Emerging wastewater contaminant metformin causes intersex and reduced fecundity in fish

Nicholas J. Niemuth, Rebecca D. Klaper Highlights Fish were exposed to metformin at concentrations relevant to wastewater effluent. Exposure from early life stages to adulthood caused intersex in male fish. Exposure caused a reduction in fecundity and in overall size of male fish. Results suggest that metformin is a potential endocrine disruptor in the environment. … Continue reading “Emerging wastewater contaminant metformin causes intersex and reduced fecundity in fish”

Endocrine Disruptors: The Secret History of a Scandal

To River Watch readers: Our website has had several articles in the past on the impacts of endocrine disruptors in streams and other waters of the USA. Most of these chemicals come from pharmaceutical sources released through normal waste discharge without being filtered or treated. What has been revealed is that, unlike many other potentially … Continue reading “Endocrine Disruptors: The Secret History of a Scandal”

The Key to Halting Damage to 36,000 Miles Of U.S. Waterways Annually

To All, This is a message from Karen of Clean Water Network that should be of interest to River Watch members and supporters. Larry Exposed Soil = Pollution  The Key to Halting Damage to 36,000 Miles Of U.S. Waterways Annually Hello CWN members, I’m Richard Klein.  I’ve been helping folks throughout the U.S. win sediment … Continue reading “The Key to Halting Damage to 36,000 Miles Of U.S. Waterways Annually”

Innovative Device traces Chemicals affecting Human and Environmental Health

February 24, 2016 by Richard Harth Every hour, a multitude of chemicals complete their use life in homes, agricultural fields and industries and flood into the environment. The ultimate fate of these compounds is often poorly understood, as are the risks they may pose to humans and the ecosystems that are essential for our survival … Continue reading “Innovative Device traces Chemicals affecting Human and Environmental Health”

Sludge as New Sentinel for Human Health Risks

January 16, 2014 by Richard Harth Thousands of chemicals serving a variety of human needs flood into sewage treatment plants once their use life has ended. Many belong to a class of chemicals known as CECs (for chemicals of emerging concern), which may pose risks to both human and environmental health. Arjun Venkatesan, a recent … Continue reading “Sludge as New Sentinel for Human Health Risks”

Does ‘the Dose make the Poison?’

Extensive results challenge a core assumption in toxicology by Pete Myers, Ph.D. and Wendy Hessler The “dose makes the poison” is a common adage in toxicology. It implies that larger doses have greater effects than smaller doses. That makes common sense and it is the core assumption underpinning all regulatory testing. When “the dose makes … Continue reading “Does ‘the Dose make the Poison?’”

CA Assessment Strategy for Freshwater Algal Blooms

Speaker: Beverley Andersen-Abbs State Water Resources Control Board January 28th 12:00 – 12:30 p.m. CalEPA HQ Building, Training Room 2 East and West https://stateofcaswrcbweb.centurylinkccc.com/CenturylinkWeb/JarmaBennett If you have more question, please contact: ·         Dawit Tadesse at dawit.tadesse@waterboards.ca.gov or (916) 341-5486 ·         Michelle Tang at Michelle.Tang@waterboards.ca.gov or (916) 341-5504 Best, Greg

Is everything we think we know about chemical toxicity wrong?

May 30, 2012 at 5:54 pm Yes,  if the first comprehensive review of the issue in a decade is correct in concluding that low doses of chemicals can harm health. Although the hypothesis that chemicals can have health effects at doses much lower than those routinely tested in the toxicological evaluation of chemicals is much-discussed, … Continue reading “Is everything we think we know about chemical toxicity wrong?”