Figure: 30 TAC §309.4 contains the effluent limitations for domestic wastewater treatment plants.     
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     Source Note:        The provisions of this §309.4 adopted to be effective March 19, 1990, 15 TexReg 1160; amended to be effective June 5, 1998, 23 TexReg 5723; amended to be effective July 5, 2006, 31 TexReg 5336; amended to be effective January 9, 2020, 45 TexReg 370