Tapcensus

Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violations in District of Columbia

1 active public water systems in District of Columbia had a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation in the past three years, 1 of them in the latest quarter of EPA's data. What Long Term 2 Enhanced Surface Water Treatment Rule (LT2) is and why it matters.

Health effects: Cryptosporidium is a chlorine-resistant protozoan parasite that causes cryptosporidiosis — severe watery diarrhea, cramping, nausea, and fever. In immunocompromised individuals (HIV/AIDS, transplant recipients), it can be life-threatening and prolonged. Infants and the elderly are also at elevated risk. LT2 violations indicate failure to complete monitoring or apply the required additional treatment tier.

Systems with a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Joint Base Anacostia Bolling
District of Columbia County 		20,411 7 1
About this data

A system is counted once if any of its violations in the past three years involved Long Term 2 Enhanced Surface Water Treatment Rule (LT2), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Long Term 2 Enhanced Surface Water Treatment Rule (LT2) alone.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The District of Columbia records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet.