The Nickel Report

On April 5 and 7, 2022, the State Water Resources Control Board (Board) will be holding public workshops to present information and solicit public input regarding a proposed administrative draft of a hexavalent chromium (chromium-6) maximum contaminant level (MCL). MCLs are drinking water standards with which public water systems must comply. The workshops, and administrative draft of the MCL, will help inform the Board’s formal rulemaking, expected to begin later this year. If adopted, the MCL would be the first drinking water standard for chromium-6 in the nation. [1]

I. Introduction

In the 1967 film The Graduate, Mr. Maguire says to Benjamin: “There is a great future in cleaning up microplastics.” That’s not exactly correct, but if the movie were remade today, it might be. [1]

The State of California and the United Nations certainly envision that future. Late last month, California adopted a first-in-the-nation strategy to address microplastics in the environment. Shortly thereafter, on March 2, 2022, the United Nations Environment Assembly adopted a resolution setting up a path to a global treaty to end plastic pollution. And, after adopting the world’s first regulatory definition of “microplastics in drinking water” in 2020, California anticipates additional action addressing microplastics in drinking water as early as this month.

The California State Water Resources Control Board (“State Board”) is poised to become “the first regulatory agency in the world to specifically define ‘Microplastics in Drinking Water.’”[1] In September 2018, the California legislature adopted Health and Safety Code section 116376 via Senate Bill No. 1422, adding microplastics regulations to California’s Safe Drinking Water Act (“SDWA”).^[2] This provision requires the State Board to adopt a definition for Microplastics in Drinking Water by July 1, 2020. Additionally, before July 1, 2021, the State Board must: (1) adopt a standard methodology for testing drinking water for microplastics; (2) adopt a requirement for four years of testing and reporting of microplastics in drinking water, including public disclosure of the results; (3) consider issuing a notification level or other guidance to help consumers interpret the testing results; and (4) accredit laboratories in California to analyze for microplastics. The State Board can implement these requirements through adoption of a Policy Handbook, rather than through the formal rulemaking process.

Under the requirements of Health and Safety Code section 116376, water suppliers in California will be the first in the nation to test for microplastics in drinking water.