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non-polluting
non-polluting adj. 
/ˌnɒnpəˈljuːtɪŋ/,
Brit. /ˌnɒnpəˈluːtɪŋ/
, /ˌnɒnpəˈluːtɪŋ//ˌnɒnpəˈljuːtɪŋ/U.S. /ˌnɑnpəˈludɪŋ/
/ˌnɑnpəˈludɪŋ/ΚΠ
1889 Amer. Naturalist 23 966 These non-polluting germs.
1967 Economist 8 July 107/3 Tenants in some rural areas had to prostrate themselves at a safe, non-polluting distance on the one day they saw their Brahmin landlord, rent day.
2000 CEEmail Summer 5/1 Designing for sustainability means..choosing materials that are non-polluting.
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