In a 2007-2008 report, the National Pollutant Inventory (NPI) rated the power station's polychlorinated dioxins and furans as "high 100", hydrochloric acid as "high 87", oxides of nitrogen as "medium 57", particulate matter 2.5 μm as "low 21", and boron & compounds as "low 15".

The 2005-2006 NPI data showed that Hazelwood released 100 tonnes (98 long tons; 110 short tons) of boron and compounds into the air and 5.2 tonnes (5.1 long tons; 5.7 short tons) into water.
Also released into the air: 7,700 tonnes (7,600 long tons; 8,500 short tons) hydrochloric acid, 2,700 tonnes (2,700 long tons; 3,000 short tons) of oxides of nitrogen, 2,900 tonnes (2,900 long tons; 3,200 short tons) of particulate matter 10 μm, and 15 grams (0.53 oz) of polychlorinated dioxins and furans.
Many pollutants are not measured.

Air pollution from the normal operations of Hazelwood alone had been estimated to kill at least 18 people a year in Gippsland, and make many more people sick.
The estimated annual health burden on the community of Hazelwood's air pollution was $100 million each year, calculated using methodology developed by the US National Academy of Sciences.
In a 2007-2008 report, the National Pollutant Inventory (NPI) rated the power station's polychlorinated dioxins and furans as "high 100", hydrochloric acid as "high 87", oxides of nitrogen as "medium 57", particulate matter 2.5 μm as "low 21", and boron & compounds as "low 15".
The 2005-2006 NPI data showed that Hazelwood released 100 tonnes (98 long tons; 110 short tons) of boron and compounds into the air and 5.2 tonnes (5.1 long tons; 5.7 short tons) into water. Also released into the air: 7,700 tonnes (7,600 long tons; 8,500 short tons) hydrochloric acid, 2,700 tonnes (2,700 long tons; 3,000 short tons) of oxides of nitrogen, 2,900 tonnes (2,900 long tons; 3,200 short tons) of particulate matter 10 μm, and 15 grams (0.53 oz) of polychlorinated dioxins and furans. Many pollutants are not measured.
Air pollution from the normal operations of Hazelwood alone had been estimated to kill at least 18 people a year in Gippsland, and make many more people sick. The estimated annual health burden on the community of Hazelwood's air pollution was $100 million each year, calculated using methodology developed by the US National Academy of Sciences.
Hazelwood Power Station