| Shanghai CEO Environmental Protection Technology Co. Ltd | Çin | SSE: 688335 |
| Cscec Scimee Sci. and Tech. Co. Ltd | Çin | SZSE: 300425 |
| Nihon Trim Co. Ltd | Japonya | JPX: 6788 |
| Midwest Energy Emissions Corp | Amerika Birleşik Devletleri | OTC: MEEC |
| Super Dragon Technology Co. Ltd | Tayvan | TWSE: 9955 |
| 374Water, Inc. | Amerika Birleşik Devletleri | OTC: SCWO |
| QleanAir AB | İsveç | FSX: 9ZJ |
| Anhui Huaqi Environmental Protection Technology Co. Ltd | Çin | SZSE: 300929 |
| MYCELX Technologies Corporation | Amerika Birleşik Devletleri | LSE: MYX |
| METAWATER Co. Ltd | Japonya | JPX: 9551 |
| Fujian Longking Co. Ltd | Çin | SSE: 600388 |
| GSD Technologies Co. Ltd | | TWSE: 6641 |
| Aker Carbon Capture AS | | OSE: ACC |
| Canature Health Technology Group Co. Ltd | Çin | SZSE: 300272 |
| Zhejiang Goldensea Hi-Tech Co. Ltd | Çin | SSE: 603311 |
| Tanke, Inc. | Amerika Birleşik Devletleri | OTC: TNKE |
| Runner | Çin | SSE: 603408 |
| Hebei Sailhero Environmental Protection High-tech Co.,Ltd | Çin | SZSE: 300137 |
| Xiongan Kerong Environment Technology Co. Ltd | Çin | SZSE: 300152 |
| Atmus Filtration Technologies Inc. | Amerika Birleşik Devletleri | NYSE: ATMU |
| Envipco Holding N.V. | Hollanda | Euronext: ENVI |
| Environmental Infrastructure Holdings Corp | Amerika Birleşik Devletleri | OTC: EIHC |
| Suzhou TA&A Ultra Clean Technology Co.,LTD. | Çin | SZSE: 300390 |
| Water Now, Inc. | Amerika Birleşik Devletleri | OTC: WTNW |
| CEC Environmental Protection Co. Ltd | Çin | SZSE: 300172 |
| Newater Technology, Inc. | Çin | NASDAQ: NEWA |
| Wolftank-Adisa Holding AG | | XETR: WAH |
| Amiad Water Systems Ltd. | İsrail | LSE: AFS |
| Pyrum Innovations AG | Almanya | FSX: PYR |
| Dr. Foods, Inc. | Amerika Birleşik Devletleri | OTC: CPSL |
| PureCycle Technologies, Inc. | Amerika Birleşik Devletleri | NASDAQ: PCT |
| Niutech Environment Technology Corp | Çin | SSE: 688309 |
| Penyao Environmental Protection Co. Ltd | Çin | SZSE: 300664 |
| Shanghai Emperor of Cleaning Hi-Tech Co. Ltd | Çin | SSE: 603200 |
| Wuxi Delinhai Environmental Technology Co. Ltd | Çin | SSE: 688069 |
| Ebara Jitsugyo Co.,Ltd. | Japonya | JPX: 6328 |
| Aduro Clean Technologies, Inc. | Kanada | CSE: ACT |
| Desiccant Technology Corp | Tayvan | TWSE: 5292 |
| Active Energy Group plc | Birleşik Krallık | LSE: AEG |
| Sionix Corp | Amerika Birleşik Devletleri | OTC: SINX |
| China Conch Venture Holdings Ltd | Çin | HKEX: 0586 |
| The Environmental Group Limited | Avustralya | ASX: EGL |
| Fujian Longma Environmental Sanitation Equipment Co. Ltd | Çin | SSE: 603686 |
| Fluence Corporation Limited | Amerika Birleşik Devletleri | ASX: FLC |
| Delta CleanTech, Inc. | Kanada | CSE: DELT |
| Energy Recovery, Inc. | Amerika Birleşik Devletleri | NASDAQ: ERII |
| Leader Environmental Technologies Ltd | Singapur | SGX: LS9 |
| Zhejiang Tuna Environmental Science & TechnologyCo.,Ltd. | Çin | SSE: 603177 |
| Umicore SA | Belçika | FSX: NVJP |
| KC Cottrell Co. Ltd | Güney Kore | KRX: 119650 |
| Eco-Safe Systems USA, Inc. | Amerika Birleşik Devletleri | OTC: ESFS |
| Maezawa Industries, Inc. | Japonya | JPX: 6489 |
| CECO Environmental Corp. | Amerika Birleşik Devletleri | NASDAQ: CECE |
| China Boqi Environmental | Çin | HKEX: 2377 |
| Munters Group AB | İsveç | OMX: MTRS |
| LiqTech International, Inc. | Danimarka | NASDAQ: LIQT |
| Takuma Co. Ltd | Japonya | JPX: 6013 |
| China Everbright Greentech Ltd | Hong Kong | HKEX: 1257 |
| Tsukishima Kikai Co. Ltd | Japonya | JPX: 6332 |
| China Ecotek Corp | Tayvan | TWSE: 1535 |
| Vow ASA | | OSE: VOW |
| Grupo Rotoplas S.A.B. de C.V. | Meksika | BMV: AGUA |
| Advanced Emissions Solutions, Inc. | Amerika Birleşik Devletleri | NASDAQ: ADES |
| Kurita Water Industries Ltd | Japonya | JPX: 6370 |
| Porvair plc | Birleşik Krallık | LSE: PRV |
| SIIC Environment Holdings Ltd | Singapur | SGX: BHK |
| Hitachi Zosen Corp | Japonya | JPX: 7004 |
| Veralto Corp | Amerika Birleşik Devletleri | NYSE: VLTO |
| GVS S.p.A. | İtalya | MTA: GVS |
| Waterco Limited | Avustralya | ASX: WAT |
| Zurn Water Solutions Corporation | Amerika Birleşik Devletleri | NYSE: ZWS |
| Federal Signal Corporation | Amerika Birleşik Devletleri | NYSE: FSS |
| Organo Corp | Japonya | JPX: 6368 |
| Career Education Corp | Amerika Birleşik Devletleri | NASDAQ: CECO |
| Guodian Technology & Environment Group Corp Ltd | Çin | HKEX: 1296 |
| Evoqua Water Technologies Corp. | Amerika Birleşik Devletleri | NYSE: AQUA |
| Sunpower Group Ltd | Çin | SGX: 5GD |
| Euro Tech Holdings Company Limited | Hong Kong | NASDAQ: CLWT |
