Page 2: Guidelines for Canadian Drinking Water Quality: Guideline Technical Document – Toluene, Ethylbenzene and the Xylenes

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1.0 Guidelines

Toluene
A maximum acceptable concentration (MAC) of 0.06 mg/L (60 µg/L) is established for toluene in drinking water. An aesthetic objective (AO) of 0.024 mg/L (24 µg/L) is also established for toluene in drinking water.

Ethylbenzene
A MAC of 0.14 mg/L (140 µg/L) is established for ethylbenzene in drinking water. An AO of 0.0016 mg/L (1.6 µg/L) is also established for ethylbenzene in drinking water.

Xylenes
A MAC of 0.09 mg/L (90 µg/L) is established for total xylenes in drinking water. An AO of 0.02 mg/L (20 µg/L) is also established for total xylenes in drinking water.

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