May 15, 2020, in the last couple of days there has been updated information released regarding EPA’s proposed MCL for perchlorate (see background discussion below). Continue reading
Water News
Update on Fluoridation Lawsuit
Toxic Substances Control Act (TSCA) Fluoridation Lawsuit
Due to the COVID-19 pandemic the scheduled April 20, 2020 trial start date for the TSCA fluoridation lawsuit was postponed until June 8, 2020. Currently the trial is scheduled to be conducted via video conference. Continue reading
EPA Regulatory Determination PFAS – 30 Day Extension
In today’s Federal Register (May 1, 2020; EPA_Fed Reg_CCL4 Reg Det_Extension) the Environmental Protection Agency (EPA) is extending the deadline for submitting public comments on its Candidate Contaminant List 4 (CCL4) Regulatory Determinations from May 11, 2020 to June 10, 2020.
Background on the CCL4 Regulatory Determinations
On March 10, 2020 EPA published for a 60-day public comment period a regulatory determination for eight unregulated contaminants on the CCL4 (copy of March 10, 2020 Federal Register is enclosed). EPA is proposing the following regulatory decisions:
- EPA will develop regulations for: PFOS and PFOA.
- EPA will not regulate the following: 1,1- dichloroethane, acetochlor, methyl bromide (bromomethane), metolachlor, nitrobenzene, and RDX.
WA DOH COVID-19 Building Shutdowns and Startup
Like many States, the California State Water Resources Control Board Division of Drinking Water has been posting information for public water systems regarding the COVID-19 pandemic. This morning they uploaded a copy of a Washington Department of Health (WA DOH) “COVID-19 Guidance for Legionella and Building Water System Closures.” Continue reading
Final Revised WOTUS Definition Published
In today’s Federal Register (Final WOTUS Definition_Fed Reg_2020-04-21), EPA and the US Army Corps of Engineers (ACOE) published the final revised definition of Waters of the United States (WOTUS) under the Clean Water Act. Continue reading
COVID-19 and CDC Updated Guidance on Legionella in Building Water Systems
In response to the ongoing COVID-19 pandemic, the US Centers for Disease Control (CDC) published updated guidance on addressing the potential for growth of Legionella in building water systems after a prolonged shutdown. Continue reading
COVID-19 Pandemic Updates
Recently the State Water Resources Control Board (SWRCB) distributed a COVID-19 Guidance Memo (“Public Water System COVID-19 Considerations” dated March 24, 2020). This morning SWRCB distributed an updated version of that document (copy enclosed) adding two new Continue reading
EPA COVID-19 Information for Water and Wastewater Utilities
The US Environmental Protection Agency (EPA) Water Security Division distributed the COVID-19 information below. EPA’s information below has embedded links to additional information. If they do not work for you, here they are: Continue reading
EPA Policy Document on Enforcement During COVID-19 Pandemic
The US Environmental Protection Agency (EPA) distributed the enclosed policy document “COVID-19 Implications for EPA’s Enforcement and Compliance Assurance Program.” (EPA Enforcement and COVID-19) The policy addresses several environmental programs and will apply retroactively beginning on March 13, 2020. Continue reading
EPA PFAS Treatment Webinar
On Wednesday, April 29, 2020 from 2:00 pm to 3:00 pm (ET), the US Environmental Protection Agency (EPA) will present a webinar on “Water Treatment Modeling Tools for Removing PFAS and Other Contaminants.” Continue reading

















