Water Quality
4.
Irrigation, Recreation and Industrial Uses
No guidelines
are set for these water uses.
Rationale:
Chlorate is used as a herbicide at concentrations over 20 gram/L. In fresh
water situations the worst case situation would be a pulp mill discharging
100 mg/L of chlorate into a river with a minimal dilution of 20:1 for a final
concentration of 5 mg/L. This should not affect plant growth. There is no evidence,
given the mode of action of chlorate, to suspect that they would have any effect
on recreational activities at the expected concentrations in fresh or marine
waters. There are no known literature guidelines or documented effects on irrigation,
recreation or industrial uses and none are anticipated at the maximum expected
concentrations.
