§ 109.1106. Design standards.

 Corrosion control treatment facilities shall be designed to satisfy the following standards unless the Department determines that the requirement is not technologically feasible or is not necessary to optimize corrosion control:

   (1)  A minimum pH measured in distribution samples of at least 7.0.

   (2)  For systems that are exempt under §  109.1105(b)(1) or (2) (relating to permit requirements) from submitting a construction permit application, a minimum alkalinity measured in all distribution samples of 20 mg/l.

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