Celebrating Drinking Water Week – May 4–10
This week marks Drinking Water Week, a national observance established by the American Water Works Association to recognize the essential role water plays in our daily lives—and the dedicated professionals who help deliver it. As we reflect on water’s journey from...
Latest Actions under Nation’s Chemical Safety Law to Protect People from Cancer-Causing Chemicals Trichloroethylene and Perchloroethylene
Final EPA rules ban all uses of TCE, all consumer uses and many commercial uses of PCE, require worker protections for all remaining uses under the Toxic Substances Control Act EPA Press Office (press@epa.gov) WASHINGTON – Today, Dec. 9, the U.S. Environmental...
California Establishes Hexavalent Chromium MCL
As of October 1, 2024, the California State Water Resources Control Board has implemented a new Maximum Contaminant Level (MCL) for hexavalent chromium (Cr6) in drinking water, set at 0.010 mg/L, or 10 µg/L (ppb). This MCL represents the maximum allowable...
Final PFAS National Primary Drinking Water Regulation
On April 10, 2024, the U.S. Environmental Protection Agency announced the final National Primary Drinking Water Regulation (NPDWR) for six Per- and Polyfluoroalkyl Substances (PFAS), also known as “forever chemicals”. The rule establishes legally enforceable...
WHA Advances Environmental Work on Santa Cruz Rail Trail
The Santa Cruz Rail Trail, a transformative 32-mile pedestrian and bicycle pathway from Davenport to Watsonville, is making strides toward improved safety and connectivity along the scenic California coast. The team at WHA has been instrumental in advancing the...
New Supplemental Guidance for Screening & Evaluating Vapor Intrusion
The California Environmental Protection Agency, alongside the California Department of Toxic Substances Control and the California State Water Resources Control Board, introduced the Final Draft Supplemental Guidance: Screening and Evaluating Vapor Intrusion...
New Emerging Chemicals Of Concern (PFOA, PFAS, and Others)
Basic Information on PFAS What are PFAS? Per- and polyfluoroalkyl substances (PFAS) are a group of man-made chemicals that includes PFOA, PFOS, GenX, and many other chemicals. PFAS have been manufactured and used in a variety of industries around the globe,...
The View From Inside A Horizontal Air Sparge Well
Horizontal wells can remediate a large area with a single well where dozens or more vertical wells might be necessary to do the same job. This can be a huge advantage where a contaminant plume may be difficult to reach with traditional vertical wells or direct push...
California Water Systems to Provide Lead Testing For Schools
SACRAMENTO – In an effort to further safeguard California’s water quality, K-12 schools in the state can receive free testing for lead under a new initiative announced today by the State Water Resources Control Board. The Board is requiring all community water...
Lahontan Water Board Receives $2.67 Million Grant to Clean up Perchlorate Plume Near Barstow
VICTORVILLE, Calif. – The Lahontan Regional Water Quality Control Board (Lahontan Water Board) announced it has received a $2.67 million grant to clean up a perchlorate plume near Barstow that has affected several private well owners’ drinking water supplies.Funds...
