How can a PWS identify labs approved by EPA for perchlorate analysis under the UCMR?
EPA set up an approval process for perchlorate analysis under the UCMR. This was based on criteria promulgated in “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” (65 FR 11372). Perchlorate has unique requirements since laboratories are not certified for the approved perchlorate method (EPA Method 314.0). For all other assessment monitoring contaminants, see F.2. EPA has compiled a list of approved perchlorate laboratories and associated contact information.
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- How and when will data entered into SDWARS/UCMR by labs be purged if "Rejected" by a PWS during their review?
- How can a PWS identify labs approved by EPA for perchlorate analysis under the UCMR?
