Section 5-1.62 - Alternative compliance criteria for enhanced coagulation
Effective Date
5-1.62 Alternative compliance criteria for enhanced coagulation. Systems may use one of the following alternative compliance criteria instead of enhanced coagulation. Systems using the alternative compliance criteria shall still comply with the monitoring requirements stated in section 5-1.61 of this Subpart.
|
Water Type |
Parameter |
Concentration |
Calculation Frequency |
|
Source water |
TOC |
≤2.0 mg/L |
Quarterly RAA |
|
Treated water |
TOC |
≤2.0 mg/L |
Quarterly RAA |
|
Source water1,2 |
SUVA |
≤2.0 L/mg-m |
Quarterly RAA |
|
Treated water2 |
SUVA |
≤2.0 L/mg-m |
Quarterly RAA |
|
Source water |
TOC |
<4.0 mg/L |
Quarterly RAA |
|
Alkalinity (as CaCO3) |
>60 mg/L |
Quarterly RAA |
|
|
TTHM |
≤0.040 mg/L |
LRAA of all sites |
|
|
HAA5 |
≤0.030 mg/L |
LRAA of all sites |
|
|
Treated water in the distribution system3 |
TTHM |
≤0.040 mg/L |
LRAA of all sites |
|
HAA5 |
≤0.030 mg/L |
LRAA of all sites |
|
1Prior to any treatment 2Measured monthly 3System uses only chlorine for primary disinfection and maintains a residual in the distribution system. |