# SDWA PWS U.S. Army Garrison Yuma Proving Ground/ KOFA (AZ0414367)
> **Administrative - Formal** · FY2010 · — · Unilateral Administrative Order Without Adjudication
## Case
- **Activity ID:** `1800105619`
- **Case Number:** 09-2010-6020
- **Type:** Administrative - Formal
- **Lead:** EPA
- **Outcome:** Unilateral Administrative Order Without Adjudication
- **Penalty assessed:** —
- **Cost recovery:** —
- **Compliance action $:** —
- **Multimedia (multi-env):** —
## Defendants
- U.S. Army
- U.S. Army Garrison at Yuma Proving Ground (complaint) (settlement)
## Summary

U.S. Army Garrison Yuma Proving Ground/Kofa Firing Range Public Water System (PWS ID No. AZ0414367) failed to meet the drinking water maximum contaminant level ( MCL ) for arsenic since June 2007 to the present. EPA adminstrative order requires the U.S. Army Garrison at Yuma Proving Ground to provide EPA Region 9 with plans and schedules to meet the MCL for arsenic by June 2012.

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*Source: [EPA ECHO](https://echo.epa.gov/) · AI Analytics · CC0 1.0*