1. (a) An E. coli MCL violation shall exist if:

   1. (1) Any routine sample tests positive for total coliforms and is followed by any repeat sample that tests positive for E. coli;
   2. (2) Any routine sample tests positive for E. coli and any of the repeat samples test positive for total coliforms;
   3. (3) The owner fails to collect all required repeat samples following an E. coli-positive routine sample; or
   4. (4) The owner fails to test for E. coli when any repeat sample tests positive for total coliforms.
2. (b) A treatment technique violation shall exist when a PWS exceeds a trigger specified in Env-Dw 709.22 and the owner fails to conduct the required assessment or corrective action within the time specified in Env-Dw 720.

3. (c) A monitoring violation shall exist if the owner:

   1. (1) Fails to collect every required routine or additional routine sample in a compliance period; or
   2. (2) Fails to analyze for E. coli following a routine total coliform-positive result.

4. (d) A reporting violation shall exist if the owner:

   1. (1) Fails to submit a monitoring report or completed assessment form after the PWS properly conducts monitoring or assessment within the time period specified; or
   2. (2) Fails to notify the department of an E. coli-positive sample required by Env-Dw 719 within the time period specified.

Source. #10771, eff 2-1-15 (from Env-Dw 709.18); ss by 14343, eff 8-22-25, EXPIRES: 8-22-35