DBP Formation Estimate

Estimate TTHM and HAA5 disinfection byproduct formation and compare against EPA MCL limits.

TOC is the primary precursor for DBP formation. Higher TOC = more DBPs.
mg/L
Applied chlorine dose. Higher doses increase DBP formation.
mg/L
Time water is in contact with chlorine. Longer contact = more DBPs.
hours
Higher temperatures accelerate DBP formation reactions.
°C
Higher pH increases TTHM formation but decreases HAA5.

Results

Estimated TTHM-µg/L
TTHM MCL (80 µg/L)-
Estimated HAA5-µg/L
HAA5 MCL (60 µg/L)-
Overall Compliance-
Reference: EPA Stage 2 D/DBPR. MCL: TTHM 80 µg/L, HAA5 60 µg/L. Amy et al. DBP formation models.