| Gorman-Rupp Co. (The) | Gorman-Rupp Co. (The) | 2026-04-30 | Added / first present |
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| NWPX Infrastructure, Inc. | NWPX Infrastructure, Inc. | 2026-04-30 | Added / first present |
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| Cadiz Inc. | Cadiz Inc. | 2026-04-30 | Added / first present |
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| United Utilities Group PLC | United Utilities Group PLC | 2026-04-30 | Added / first present |
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| Geberit AG | Geberit AG | 2026-04-30 | Added / first present |
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| PILLAR Corp. | PILLAR Corp. | 2026-04-30 | Added / first present |
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| Severn Trent PLC | Severn Trent PLC | 2026-04-30 | Added / first present |
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| Cia de Saneamento de Minas Gerais COPASA MG | Cia de Saneamento de Minas Gerais COPASA MG | 2026-04-30 | Added / first present |
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| YTL Power International Bhd. | YTL Power International Bhd. | 2026-04-30 | Added / first present |
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| Jiangxi Hongcheng Environment. Co., Ltd. | Jiangxi Hongcheng Environment. Co., Ltd. | 2026-04-30 | Added / first present |
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| Alkhorayef Water and Power Technologies Co. | Alkhorayef Water and Power Technologies Co. | 2026-04-30 | Added / first present |
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| Cia De Sanena Do Parana | Cia De Sanena Do Parana | 2026-04-30 | Added / first present |
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| Kitz Corp. | Kitz Corp. | 2026-04-30 | Added / first present |
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| Tsukishima Holdings Co., Ltd. | Tsukishima Holdings Co., Ltd. | 2026-04-30 | Added / first present |
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| Nomura Micro Science Co., Ltd. | Nomura Micro Science Co., Ltd. | 2026-04-30 | Added / first present |
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| Chengdu Xingrong Environment Co., Ltd. | Chengdu Xingrong Environment Co., Ltd. | 2026-04-30 | Added / first present |
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| Zhongshan Public Utilities Group Co., Ltd. | Zhongshan Public Utilities Group Co., Ltd. | 2026-04-30 | Added / first present |
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| Beijing Capital Eco-environment Protection Group Co., Ltd. | Beijing Capital Eco-environment Protection Group Co., Ltd. | 2026-04-30 | Added / first present |
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| Kuo Toong International Co., Ltd. | Kuo Toong International Co., Ltd. | 2026-04-30 | Added / first present |
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| Amata Corp. PCL | Amata Corp. PCL | 2026-04-30 | Added / first present |
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| Beijing OriginWater Technology Co., Ltd. | Beijing OriginWater Technology Co., Ltd. | 2026-04-30 | Added / first present |
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| Kurimoto, Ltd. | Kurimoto, Ltd. | 2026-04-30 | Added / first present |
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| Jingjin Equipment Inc. | Jingjin Equipment Inc. | 2026-04-30 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2025-10-31 | Added / first present |
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| Cia de Saneamento Basico do Estado de Sao Paulo - SABESP | Cia de Saneamento Basico do Estado de Sao Paulo - SABESP | 2025-07-31 | Added / first present |
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| Interpump Group S.p.A. | Interpump Group S.p.A. | 2025-07-31 | Added / first present |
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| Coway Co., Ltd. | Coway Co., Ltd. | 2025-07-31 | Added / first present |
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| Beijing Enterprises Water Group Ltd. | Beijing Enterprises Water Group Ltd. | 2025-07-31 | Added / first present |
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| Astral Ltd. | Astral Ltd. | 2025-07-31 | Added / first present |
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| Kemira OYJ | Kemira OYJ | 2025-07-31 | Added / first present |
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| VA Tech Wabag Ltd. | VA Tech Wabag Ltd. | 2025-01-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2024-10-31 | Added / first present |
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| Otter Tail Corp. | Otter Tail Corp. | 2024-10-31 | Added / first present |
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| Supreme Industries Ltd. | Supreme Industries Ltd. | 2024-07-31 | Added / first present |
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| China Lesso Group Holdings Ltd. | China Lesso Group Holdings Ltd. | 2024-07-31 | Added / first present |
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| Hawkins, Inc. | Hawkins, Inc. | 2024-04-30 | Added / first present |
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| Consolidated Water Co. Ltd. | Consolidated Water Co. Ltd. | 2024-04-30 | Added / first present |
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| Kurita Water Industries Ltd. | Kurita Water Industries Ltd. | 2024-04-30 | Added / first present |
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| Veralto Corp. | Veralto Corp. | 2024-04-30 | Added / first present |
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| Organo Corp. | Organo Corp. | 2024-04-30 | Added / first present |
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| Power and Water Utility Co. for Jubail and Yanbu | Power and Water Utility Co. for Jubail and Yanbu | 2024-04-30 | Added / first present |
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| ACWA Power Co. | ACWA Power Co. | 2024-01-31 | Added / first present |
|---|
| Zurn Elkay Water Solutions Corp. | Zurn Elkay Water Solutions Corp. | 2023-04-30 | Added / first present |
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| Ecolab Inc. | Ecolab Inc. | 2022-10-31 | Added / first present |
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| Valmont Industries, Inc. | Valmont Industries, Inc. | 2022-10-31 | Added / first present |
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| Sulzer AG | Sulzer AG | 2022-10-31 | Added / first present |
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| Core & Main Inc. | Core & Main Inc. | 2022-10-31 | Added / first present |
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| Wienerberger AG | Wienerberger AG | 2022-10-31 | Added / first present |
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| Belimo Holding AG | Belimo Holding AG | 2022-10-31 | Added / first present |
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| Northwest Pipe Co. | Northwest Pipe Co. | 2022-04-30 | Added / first present |
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| Aalberts N.V. | Aalberts N.V. | 2022-04-30 | Added / first present |
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| Georg Fischer AG | Georg Fischer AG | 2022-04-30 | Added / first present |
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| Pennon Group PLC | Pennon Group PLC | 2022-04-30 | Added / first present |
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| Per Aarsleff Holding A/S | Per Aarsleff Holding A/S | 2022-04-30 | Added / first present |
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| TETRA Technologies, Inc. | TETRA Technologies, Inc. | 2021-10-31 | Added / first present |
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| Pure Cycle Corp. | Pure Cycle Corp. | 2021-10-31 | Added / first present |
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| Zurn Water Solutions Corp. | Zurn Water Solutions Corp. | 2021-10-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2021-07-31 | Added / first present |
|---|
| Stantec, Inc. | Stantec, Inc. | 2021-04-30 | Added / first present |
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| Montrose Environmental Group, Inc. | Montrose Environmental Group, Inc. | 2021-04-30 | Added / first present |
|---|
| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2020-10-31 | Added / first present |
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| Forterra, Inc. | Forterra, Inc. | 2020-10-31 | Added / first present |
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| Artesian Resources Corp. | Artesian Resources Corp. | 2020-10-31 | Added / first present |
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| Northwest Pipe Co. | Northwest Pipe Co. | 2020-10-31 | Added / first present |
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| Rexnord Corp. | Rexnord Corp. | 2020-04-30 | Added / first present |
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| Essential Utilities, Inc. | Essential Utilities, Inc. | 2020-04-30 | Added / first present |
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