What are the bacterial and physical standards for a bathing lake?
• The Maricopa County Environmental Health Code Chapter VI, Section 12 Regulation 2 requires: “Operators of a public or semipublic natural bathing place, a semi-artificial bathing place, or an artificial lake shall ensure that the public or semipublic natural bathing place, semi-artificial bathing place, or artificial lake meets the narrative and numeric water quality standards in 18 A.A.C. 11, Article 1 when the public or semipublic natural bathing place, semi-artificial bathing place, or artificial lake is open for water contact recreation. Operators shall collect one (1) sample per one (1) acre in the bathing area and one (1) sample per ten (10) acres of overall lake surfaces. Samples shall be collected and examined in accordance with the procedures outlined in the latest edition of “Standard Methods for the Examination of Water and Wastewater”.