The Sanyo Chemical Group uses water resources in various aspects of manufacturing chemical products. We believe that it is our mission to endeavor to conserve water and reduce water pollution through wastewater discharged from our business sites.


We work to reduce water consumption as one of the targets of our Environmental Action Plan 21-24.
Regarding reduction in discharge of water pollutants, we meet the values set in laws and regulations by preventing leakage at business sites and monitoring pollutants in wastewater.


The Energy Conservation Promotion Dept. of the Responsible Care Division serves as the secretariat to manage the progress of measures, such as water conservation at respective business sites, and shares the information. The resulting measures are also deployed to overseas business sites.

Water consumption targets and results (domestic and overseas)

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Water consumption Less than 4,136 thousand m3; 5% or more reduction compared to FY 2019 Less than 4,223 thousand m3; 3% or more reduction compared to FY 2019 Less than 4,333 thousand m3; 0.5% reduction compared to FY 2019 B - C
Reduction ratio from FY2019 5% or more 3% or more 0.5%
  • A; Excellent  B; Good  C; Bad

Reduction of water consumption

Regarding water consumption within our Group, industrial water accounts for about 90%. Industrial water is mainly used for manufacturing equipment and auxiliary equipment such as heating, cooling, and cleaning water as well as for wastewater equipment. Drinking water is used as a polymerization solvent and dilution water for products. It is also used for the cleaning of products, intermediate products, and manufacturing equipment. No groundwater or seawater is used. The production volume in FY2022 decreased by about 10% from the previous fiscal year. However, the consumption of heating and cooling water in manufacturing equipment and auxiliary equipment is not affected by increases or decreases in production volume. Water consumption decreased slightly in Japan and increased slightly overseas, adding up to 4,333 thousand m3 in total (an increase of 1% from the previous fiscal year).

Change of water intake volume
Breakdown of water intake (FY2022)
Water discharge

Water conservation and recycling

Polymerization water for polymer production and cleaning water for products and intermediate products are used repeatedly as much as possible. Steam drainage is reused as water. Water conservation and recycling themes are determined for respective business sites to reduce consumption.

Reduction of water pollutants discharge

While preventing leakage at business sites, we monitor the concentration of pollutants in wastewater to ensure management within the regulation values set by laws and ordinances.

COD load amount
Total phosphorous emissions volume
Total nitrogen emissions volume

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Discharge area and environmental impact (domestic, FY2022)

Unit Nagoya area Kawasaki area Kashima area Kyoto area Kinuura area
Facilities Nagoya Factory,
SDP Global Co,. Ltd.,
San Nopco Ltd.
San Chemical Co., Ltd. Kashima Factory,
San-Petrochemicals Co., Ltd.
Kyoto Factory,
Head Office, Research Laboratory, Katsura Research Laboratory
Kinuura Factory
Discharge area Ise Bay Tokyo Bay Sewage system Sewage system Sewage system
Water discharge volume thousand m3 1,924 116 838 144 1
COD tons 10.9 2.9 127.4 1.2 0.0
Total Phosphorus tons 0.3 0.0 0.6 0.1 0.0
Total Nitrogen tons 1.4 0.3 1.9 0.4 0.0

Products that contribute to the conservation of water resources and the water environment

We offer a lineup of products categorized by the keywords of water conservation, wastewater treatment, and biodegradability, including raw materials for water-conserving compact detergents and polymer flocculants for wastewater treatment.