On March 23, 2017, EPA Region 6 issued an Administrative Order (AO) for Plan Implementation (AO Plan Implementation) to the Ellinger Sewer and WSC (Respondent). Respondent requested additional time to complete the construction schedule. The AO incorporates the new construction schedule deadline extension request submitted by the Respondent in their compliance plan. On July 19, 2011, EPA Region 6 issued the original Administrative Order (AO) under its authority pursuant to the Safe Drinking Water Act to Respondent for violations at its water system in Ellinger, TX. The Original AO was issued in response to violations of the arsenic maximum contaminant level (MCL). The Original AO required Respondent to comply immediately with the referenced MCL or submit to EPA 1) a detailed plan to meet the arsenic MCL; 2) a cost analysis of the proposed plan; and 3) a construction schedule. This AO extends the compliance deadline to October 1, 2018 and supersedes the AO issued on July 19, 2011.