Citation: 40 CFR 141.130- 141.134. Includes:residualsbyproductsbyproduct precursors. Effective Dates. January 1, 2002 SW systems serving > 10,000GWUDI systems serving > 10,000. Effective Dates. January 1, 2004SW systems serving < 10,000GWUDI systems serving < 10,000GW systems that disinfect (C or NCNT)Transient systems that use chlorine dioxide SW bulk purchasers with >100 service connections, TTHM and HAA5 requirements only (NJAC 7:10-5.2(a)(12)(i)).