U.S. EPA Region 8 approved a variance under the Safe Drinking Water Act for Denver Water. This variance will allow Denver Water to implement a Lead Reduction Program Plan (LRPP) as an alternative to treating for the corrosion of lead and copper with orthophosphate. EPA believes that Denver’s LRPP will provide health benefits and will be as protective in lowering the lead levels as the requirements under the Lead and Copper Rule. Under the LRPP, Denver will implement a holistic lead management strategy that requires an accelerated lead service line replacement schedule, provides filters to customers, and controls corrosion through pH/alkalinity adjustments. Additionally, Denver Water will develop a comprehensive lead service line inventory and conduct an extensive community outreach campaign. This variance is effective for an initial period of three years and may be extended if Denver Water demonstrates that that LRPP can be effectively implemented and results in reductions to lead in drinking water.
Concurrent with this action, EPA is asking for comments on the potential criteria for how the Agency will determine whether to extend this variance for up to an additional twelve years. EPA is accepting public comments on these criteria and on EPA’s interpretation of the statutory standard for future variance requests. See the Federal Register notice in the docket for specific questions on which EPA is seeking feedback.
Documents related to this decision are available via the docket linked in the How to Comment box above or in the Docket Number section below.