Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violations in New Mexico
7 active public water systems in New Mexico had a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation in the past three years, 7 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.
Systems with a Long Term 2 Enhanced Surface Water Treatment Rule (LT2) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Timberon W and SD Timberon · Otero County |
2,698 | 6 | 4 | |
|
Chama Water System Chama · Rio Arriba County |
1,573 | 6 | 1 | |
|
Navajo Lake State Park Pine Site Navajo Dam · San Juan County |
250 | 5 | 0 | |
|
Heron Lake State Park (surface Water) Rutheron · Rio Arriba County |
150 | 4 | 0 | |
|
Navajo Lake State Park Sims Mesa Navajo Dam · Rio Arriba County |
110 | 5 | 0 | |
|
EL Vado Lake State Park Rutheron · Rio Arriba County |
100 | 4 | 1 | |
|
Pine River Mdca Navajo Dam · San Juan County |
43 | 9 | 5 |
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 New Mexico 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.