EPA v. Upper Arroyo Hondo Mutual Domestic Water Consumers Association (MDWCA) LSLI AO

Case summary

SDWA Lead Service Line Inventory (LSLI) Administrative Orders issued by the United States Environmental Protection Agency (EPA) to the Upper Arroyo Hondo Mutual Domestic Water Consumers Association (MDWCA) on May 11, 2026. The Orders were issued in response to the system's failure to develop a Lead Service Line Inventory (LSLI), pursuant to the Lead Copper Rule Improvements (LCRI). Per the Order, systems are required to develop an adequate LSLI, submit the inventory to the state, and if applicable issue a public notice for their failure to develop the LSLI by the statutory due date October 14, 2024.

Defendants (1)

• Upper Arroyo Hondo MDWCANamed in complaintNamed in settlement

Facilities (1)

• UPPER ARROYO HONDO MDWCA-TREATMENT PLANT #1

  ARROYO HONDO, NM, 87513

  Registry ID: 110013125448

Statutes cited

• SDWA 1412/1414 — National Drinking Water Regulations

Enforcement conclusions (1)

• Upper Arroyo Hondo Mutual Domestic Water Consumers Association (MDWCA) LSLI AOentered 2026-05-11

  Primary law: SDWA

Timeline (2 milestones)

• 2026-05-11Final Order Issued
• 2026-05-12Enforcement Action Data Entered