The invalidation of a total coliform sample result can be made only by the Administrator in accordance with Section 141.21(c)(1)(i), (ii), or (iii) or by the certified laboratory in accordance with R309-211-4(3), with the Administrator acting as the Director.

KEY: drinking water, distribution system monitoring, total coliform, compliance determinations

Date of Last Change: January 15, 2019

Notice of Continuation: February 10, 2025

Authorizing, and Implemented or Interpreted Law: 19-4-104