A supplier of water to a public water system who uses products containing acrylamide or epichlorohydrin shall certify annually, in writing to the Approving Authority, that the product of monomer level and dosage does not exceed the following levels: For acrylamide, 0.05 percent dosed at 1 ppm (or an equivalent combination of monomer concentration in the material being added and polymer dosage rate as long as the concentration in the finished water does not exceed 0.0005 milligram/liter of acrylamide); and For epichlorohydrin, 0.01 percent dosed at 20 ppm (or an equivalent combination of monomer concentration in the material being added and polymer dosage rate as long as the concentration in the finished water does not exceed 0.002 milligram/liter of epichlorohydrin). The certification shall be in the manner approved by the Approving Authority.