Performance and Status
Current status of investment in environmental safety
Greenhouse gas emissions and energy usage
Amount of waste discharge and recycling
Water usage
Protecting the Atmospheric Environment
Protecting the water quality and environment
Annual investment status 
Amount of investment by year 
Greenhouse gas emissions (tCO2/t production) 
Energy usage (TOE/t production) 
Amount of waste discharge (t waste / t production) 
Amount of recycling (t recycling / t waste) 
Water usage (t water usage / t production) 
| Type | Unit | Criteria for allowing discharge | Concentration-discharge | Concentration-discharge compared to the allowable discharge standard. |
|---|---|---|---|---|
| Dust | mg/S㎥ | 30 | 2.27 | 8% |
| Nitrogen oxide | ppm | 40 | 22.82 | 57% |
| Sulfur oxides | ppm | 35 | 2.47 | 7% |
| Ammonia | ppm | 30 | 0.28 | 1% |
| Nickel | ppm | 2 | 0.13 | 7% |
Ochang Plant (% compared to the allowable discharge standard) 
Pohang Plant (% compared to the allowable discharge standard) 
Less than 16% on average compared to the discharge allowance standard.
| Type | Unit | Criteria for allowing discharge | Concentration-discharge | Concentration-discharge compared to the allowable discharge standard. |
|---|---|---|---|---|
| BOD | ppm | 30 | 2.6 | 9% |
| COD | ppm | 25 | 4.0 | 16% |
| SS | ppm | 30 | 6.3 | 21% |
| T-N | ppm | 60 | 3.9 | 7% |
| T-P | ppm | 8 | 0.2 | 2% |
Ochang Plant (% compared to the allowable discharge standard) 
Pohang Plant (% compared to the allowable discharge standard) 