Open Government Portal

This guideline technical document reviews and assesses all identified health risks associated with PFOA in drinking water. It incorporates available studies and approaches and takes into consideration the availability of appropriate treatment technology. Based on this review, the drinking water guideline for PFOA is a maximum acceptable concentration (MAC) of 0.0002 mg/L (0.2 µg/L), based on the general population.

This Guideline Technical Document reviews the health risks associated with haloacetic acids in drinking water. It assesses all identified health risks, taking into account new studies and approaches, as well as treatment considerations. Exposure to haloacetic acids from drinking water through inhalation and skin contact has been considered for inclusion, but is not deemed significant. Based on this review, the guideline for total haloacetic acids in drinking water is established at a maximum acceptable concentration of 0.08 mg/L.

The maximum acceptable concentration (MAC) for monochlorobenzene in drinking water is 0.08 mg/L (80 µg/L); the aesthetic objective (AO) is ≤ 0.03 mg/L ( ≤ 30 µg/L).

The maximum acceptable concentration (MAC) for paraquat as the dichloride in drinking water is 0.01 mg/L (10 µg/L), or 0.007 mg/L (7 µg/L) expressed as the paraquat ion

The aesthetic objective for iron in drinking water is ≤0.3 mg/L (≤300 µg/L).

The maximum acceptable concentration (MAC) for boron in drinking water is 5 mg/L (5000 µg/L).

The maximum acceptable concentration (MAC) for metolachlor in drinking water is 0.05 mg/L (50 µg/L).

The maximum acceptable concentration (MAC) for picloram in drinking water is 0.19 mg/L (190 µg/L).

The maximum acceptable concentration (MAC) for chlorpyrifos in drinking water is 0.09 mg/L (90 µg/L).

The maximum acceptable concentration (MAC) for bromoxynil in drinking water is 0.03 mg/L (30 µg/L).