EPA proposed to approve revisions to Maryland’s public water system supervision program concerning Stage 2 disinfectants and disinfection byproducts.

EPA seeks public comment on its proposed approval of revisions to Nebraska’s public water supply supervision program.

EPA announced its approval of revisions to New Mexico's public water system supervision program;  the revisions pertain to the Revised Total Coliform Rule, which the state adopted by reference.

EPA announced its tentative approval of revisions to Florida's public water system supervision program that would allow the state to implement and enforce the Stage 2 Disinfectants and Disinfection Byproducts Rule, Long Term 2 Enhanced Surface Water Treatment Rule, and Ground Water Rule; EPA determined that the rules are no less stringent than the corresponding federal regulations.

EPA announced approval of 16 alternative testing methods under the SDWA for use in measuring the levels of contaminants in drinking water and for determining compliance with national primary drinking water regulations.

EPA announced its final regulatory determination under the SDWA not to issue national primary drinking water regulations for dimethoate, 1,3-dinitrobenzene, terbufos, and terbufos sulfone, and that it will delay a final regulatory determination on strontium until further study has been conducted.

EPA proposed revisions to the Unregulated Contaminant Monitoring Rule, which requires public water systems to collect occurrence data for contaminants that may be present in tap water but are not yet subject to the Agency's drinking water standards; the SDWA requires the rule to be updated every five years.

EPA proposed to approve revisions to Oklahoma’s public water system supervision program that implement the Revised Total Coliform Rule.

EPA gave tentative approval to Hawaii’s public water system supervision program under the SDWA.

EPA proposed to approve revisions to Arkansas' public water system supervision program, which adopted the Revised Total Coliform Rule by reference.