['Water Programs']
['Water Quality', 'Safe Drinking Water']
05/03/2022
CFR Section
(a) Determination of systems required to profile. A public water system subject to the requirements of this subpart must determine its TTHM annual average using the procedure in paragraph (a)(1) of this section and its HAA5 annual average using the procedure in paragraph (a)(2) of this section. The annual average is the arithmetic average of the quarterly averages of four consecutive quarters of monitoring.
['Water Programs']
['Water Quality', 'Safe Drinking Water']
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