Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 5 - INDUSTRIAL WASTEWATER PRETREATMENT PROGRAMS AND NPDES
Rule 22 - Classification of Wastewater Treatment Plants; Examination and Certification of Operators
Section 22-4 - Classification of wastewater treatment plants; nonindustrial treatment plants

Universal Citation: 327 IN Admin Code 22-4

Current through September 18, 2024

Authority: IC 13-14-8; IC 13-18-11-2; IC 13-18-11-13

Affected: IC 13-18-11

Sec. 4.

A nonindustrial wastewater treatment plant shall be classified into one (1) of five (5) classifications based on the design population equivalent of the plant according to the following:

(1) Class I-SP includes all waste stabilization ponds, whether controlled discharge or continuous discharge, regardless of flow.

(2) Class I includes wastewater treatment plants having a design population equivalent of less than two thousand (2,000).

(3) Class II includes wastewater treatment plants having a design population equivalent:

(A) equal to or greater than two thousand (2,000); and

(B) less than ten thousand (10,000).

(4) Class III includes wastewater treatment plants having a design population equivalent:

(A) equal to or greater than ten thousand (10,000); and

(B) less than or equal to forty thousand (40,000).

(5) Class IV includes wastewater treatment plants having a design population equivalent greater than forty thousand (40,000).

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