# Unregulated Contaminant Monitoring Regulation for Public Water Systems; Analytical Methods for Perchlorate and Acetochlor; Announcement of Laboratory Approval and Performance Testing (PT) Program for the Analysis of Perchlorate

> **EPA** · Rulemaking · Modified 2026-04-10T17:38:01Z

## Docket
- **Docket ID:** EPA-HQ-OW-1999-2874
- **Agency:** EPA
- **Type:** Rulemaking
- **Last modified:** 2026-04-10T17:38:01Z

## Source
- [regulations.gov docket](https://www.regulations.gov/docket/EPA-HQ-OW-1999-2874)
- [Public comments](https://www.regulations.gov/docket/EPA-HQ-OW-1999-2874/comments)

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