How to Comply With the Lead and Copper Rule

Abstract

The Lead and Copper Rule regulation sets maximum contaminant level goals (MCLGs) for lead and copper, monitoring requirements and analytical methods, treatment technique requirements, record‐keeping and reporting requirements, and administrative provisions. This article offers a general overview of this complex rule, beginning with a brief discussion of health effects and MCLGs. Two sets of monitoring requirements are included in the rule, one for lead and copper, the other for other water quality constituents. Start dates for monitoring and requirements for high‐risk homes are given. The new rule replaces the existing interim MCL of 0.0t mg/L with a treatment technique requirement; this could include corrosion control or source water treatment. Systems that exceed the lead action level after installing optimal corrosion control and source water treatment must replace lead service lines. Requirements for public education, record‐keeping and reporting, public notification, and variances and exemptions are given. Compliance schedules are given for various types of water systems.