EPA v. DAYTON TRAILS - LSLI (UAO) (SDWA PWS)
Unilateral Administrative Order Without Adjudication
Case summary
On April 24, 2026, Region 10 issued an UAO under Section 1414 of SDWA. The UAOs require the Systems to develop and submit a Lead Service Line Inventory; notify customers served by lead, galvanized, or unknown service lines; and make the Lead Service Line Inventory publicly available. The State of Washington provided the Systems with compliance assistance prior to referring them to the EPA for enforcement action. The EPA, rather than the State of Washington, took this action because Washington has not applied for primary authority to enforce the Lead and Copper Rule Improvements.
Defendants (1)
- MASON COUNTY PUD 1Named in settlement
Facilities (1)
DAYTON TRAILS WATER SYSTEM
W DAYTON TRAILS DR AND W PALOMINO PL, SHELTON, WA, 98584
Registry ID: 110012824925
Statutes cited
- SDWA 1412/1414 — National Drinking Water Regulations
Enforcement conclusions (1)
DAYTON TRAILS - LSLI (UAO) (SDWA PWS)entered 2026-04-24
Primary law: SDWA
Timeline (2 milestones)
- 2026-04-24Final Order Issued
- 2026-04-29Enforcement Action Data Entered
Case metadata
- EPA activity ID
- 3604916370
- Case number
- 10-2026-0163
- Lead agency
- EPA
- EPA region
- 10
- Voluntary self-disclosure
- No
- Primary statute
- National Drinking Water Regulations
Sourced verbatim from EPA ECHO Enforcement Case Report for case 10-2026-0163 . Bulk data: ICIS-FEC download summary.
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