Water and Drainage
- TOP
- Sustainability
- Environment
- Water and Drainage
Water resources
The NOF Group makes efforts for the use and management of water resources as well as the appropriate treatment and management of plant wastewater in accordance with the Management Policy Regarding Responsible Care.
To this end, each plant and subsidiary is working on the following items.
(1)Operation and management of specified
facilities and wastewater management
based on the Water Pollution Prevention
Law
(2)Thorough employee education on
environment-related laws
(3)Assessment of environmental impact when
new facilities are established
(4)Review of management status through internal audits
(5)Disclosure of information through regular community dialogue
Use of water resources
NOF has been carrying out the efficient use of water resources by estimating the volume of water resources intake and wastewater volume. The volume of water intake of the Domestic Group in fiscal 2020 amounted to 8.498 million m3, of which 1.402 million m3 was groundwater and 2.183 million m3 was city water.
For the appropriate management and protection of water resources, we conduct employee education and awareness-raising activities, recognize the importance of sustainable water use, and work to reduce water consumption. Our water usage per million yen of sales has improved by approximately 7% over the last two years, making us less dependent on water use.
Category | FY2019 | FY2020 | FY2021 | FY2022 | |
---|---|---|---|---|---|
NOF | Volume of water intake | 5,832 | 5,874 | 5,889 | 6,007 |
City water |
895 | 801 | 794 | 751 | |
Industrial water | 4,265 | 4,300 | 4,322 | 4,351 | |
Ground water | 673 | 773 | 774 | 905 | |
Water effluent | 4,852 | 4,846 | 4,939 | 5,022 | |
Volume of water used | 980 | 1,026 | 950 | 985 | |
Domestic Group |
Volume of water intake | 6,376 | 6,434 | 6,447 | 6,535 |
City water |
925 | 831 | 829 | 782 | |
Industrial water | 4,265 | 4,300 | 4,322 | 4,351 | |
Ground water | 1,186 | 1,304 | 1,297 | 1,402 | |
Water effluent | 6,042 | 6,161 | 6,297 | 6,091 | |
Volume of water used | 334 | 273 | 150 | 444 | |
NOF Group |
Volume of water intake | 8,232 | 8,318 | 8,419 | 9,498 |
City water |
2,121 | 1,938 | 2,100 | 2,184 | |
Industrial water | 4,925 | 5,077 | 5,022 | 4,912 | |
Ground water | 1,186 | 1,304 | 1,297 | 1,402 | |
Water effluent | 6,424 | 6,551 | 6,642 | 6,421 | |
Volume of water used | 1,808 | 1,767 | 1,777 | 2,077 | |
Volume of water used / sales (ton / million yen) | 10.0 | 10.2 | 9.2 | 9.5 | |
Prevention of water pollution
Plant wastewater resulting from production activities is properly treated through treatment facilities and discharged outside the plant. We monitor biochemical oxygen demand (BOD), chemical oxygen demand (COD), and suspended solids* among others contained in wastewater. Along with ongoing equipment upgrades, we are improving our water quality management system and operating in compliance with prescribed limits. In addition, there have been no cases of violations of laws and regulations related to water quality.
Category | FY2019 | FY2020 | FY2021 | FY2022 | |
---|---|---|---|---|---|
NOF | BOD | 30 | 34 | 50 | 37 |
COD | 60 | 60 | 67 | 44 | |
Suspended solid emissions | 31 | 33 | 31 | 22 | |
Domestic Group |
BOD | 33 | 38 | 52 | 39 |
COD | 60 | 60 | 68 | 44 | |
Suspended solid emissions | 37 | 40 | 36 | 25 | |
NOF Group |
BOD | 74 | 104 | 93 | 67 |
COD | 440 | 219 | 154 | 148 | |
Suspended solid emissions | 61 | 56 | 46 | 4 | |
Violations of laws and regulations (no.) | 0 | 0 | 0 | 0 |
* Particulate substances of 2 mm or less in diameter floating or suspended in water; one of the indicators of water quality.