| 1 | AW AWK•US•NYSE $27.27B·$126.01·+0.26% | | $27.27B | $126.01 | +0.26% | 1.6M | |
| 2 | AW American Water Works Company Inc. AWC•DE•XETRA $24.53B·$126.72·-0.09% | | $24.53B | $126.72 | -0.09% | 177 | |
| 3 |  Companhia de Saneamento Básico do Estado de São Paulo - SABESP SBSP3•BR•SA $24.09B·$6.19·-7.45% | | $24.09B | $6.19 | -7.45% | 12.4M | |
| 4 | SB Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR SBS•US•NYSE $20.83B·$6.26·-81.12% | | $20.83B | $6.26 | -81.12% | 3.8M | |
| 5 | ST STRNY•US•PINK $12.69B·$43.29·-1.55% | | $12.69B | $43.29 | -1.55% | 142 | |
| 6 | WT WTRG•US•NYSE $11.79B·$37.57·+0.08% | | $11.79B | $37.57 | +0.08% | 1.6M | |
| 7 | SV SVTRF•US•PINK $11.68B·$41.61·-1.19% | | $11.68B | $41.61 | -1.19% | 122 | |
| 8 | UU United Utilities Group PLC ADR UUGRY•US•PINK $11.42B·$38.18·-2.08% | | $11.42B | $38.18 | -2.08% | 15 | |
| 9 |  0270•HK•HK $6.82B·$1.08·+4.56% | | $6.82B | $1.08 | +4.56% | 15.3M | |
| 10 | GG Guangdong Investment Limited GGDVF•US•PINK $6.48B·$0.88·+0.00% | | $6.48B | $0.88 | +0.00% | - | |
| 11 | GG GGDVY•US•PINK $6.18B·$51.59·+0.00% | | $6.18B | $51.59 | +0.00% | - | |
| 12 |  Companhia de Saneamento de Minas Gerais CSMG3•BR•SA $4.26B·$10.79·-4.07% | | $4.26B | $10.79 | -4.07% | 4.9M | |
| 13 | 60 Grandblue Environment Co Ltd 600323•CN•SHG $3.74B·$4.47·-4.97% | | $3.74B | $4.47 | -4.97% | 11.4M | |
| 14 | 03 Beijing Enterprises Water Group Ltd 0371•HK•HK $3.55B·$0.37·+3.96% | | $3.55B | $0.37 | +3.96% | 17.7M | |
| 15 | PE PEGRF•US•PINK $3.54B·$7.86·+0.00% | | $3.54B | $7.86 | +0.00% | - | |
| 16 | BJ Beijing Enterprises Water Group Limited BJWTY•US•PINK $3.15B·$22.00·+0.00% | | $3.15B | $22.00 | +0.00% | - | |
| 17 | 60 Chongqing Water Group Co Ltd 601158•CN•SHG $3.15B·$0.66·+0.90% | | $3.15B | $0.66 | +0.90% | 12.7M | |
| 18 | SA Companhia de Saneamento do Paraná - SANEPAR SAPR3•BR•SA $3.05B·$1.95·-3.33% | | $3.05B | $1.95 | -3.33% | 79.7K | |
| 19 | BJ Beijing Enterprises Water Group Limited BJWTF•US•PINK $3.01B·$0.33·+5.73% | | $3.01B | $0.33 | +5.73% | - | |
| 20 | 00 Chengdu Xingrong Investment Co Ltd 000598•CN•SHE $2.96B·$0.99·-0.44% | | $2.96B | $0.99 | -0.44% | 27.3M | |
| 21 | AW American States Water Company AWR•US•NYSE $2.96B·$77.15·+1.73% | | $2.96B | $77.15 | +1.73% | 210.4K | |
| 22 | CW California Water Service Group CWT•US•NYSE $2.70B·$42.88·-0.35% | | $2.70B | $42.88 | -0.35% | 331.1K | |
| 23 | SA Companhia de Saneamento do Paraná - SANEPAR SAPR4•BR•SA $2.59B·$1.64·-4.16% | | $2.59B | $1.64 | -4.16% | 625.0K | |
| 24 | 00 Zhongshan Public Utilities Group Co Ltd 000685•CN•SHE $2.55B·$1.70·-2.11% | | $2.55B | $1.70 | -2.11% | 26.5M | |
| 25 | MW MWTCF•US•PINK $2.22B·$0.72·+0.00% | | $2.22B | $0.72 | +0.00% | - | |
| 26 | MW Manila Water Company Inc ADR MWTCY•US•PINK $1.97B·$17.65·+0.00% | | $1.97B | $17.65 | +0.00% | - | |
| 27 | 60 Jiangxi Hongcheng Waterworks Co Ltd 600461•CN•SHG $1.90B·$1.52·+2.89% | | $1.90B | $1.52 | +2.89% | 11.1M | |
| 28 | 30 Beijing Water Business Doctor 300055•CN•SHE $1.39B·$1.68·+0.18% | | $1.39B | $1.68 | +0.18% | 29.8M | |
| 29 | 00 Guangdong Shunkong Development Co Ltd 003039•CN•SHE $1.31B·$2.15·+1.81% | | $1.31B | $2.15 | +1.81% | 4.9M | |
| 30 | CW China Water Affairs Group Limited CWAFF•US•PINK $1.31B·$0.68·+0.00% | | $1.31B | $0.68 | +0.00% | - | |
| 31 | TT TTW Public Company Limited TTAPY•US•PINK $1.22B·$14.01·+0.00% | | $1.22B | $14.01 | +0.00% | - | |
| 32 | CA CASAN - Companhia Catarinense de Aguas e Saneamento CASN3•BR•SA $1.20B·$1.73·+0.00% | | $1.20B | $1.73 | +0.00% | - | |
| 33 | TT TTW Public Company Limited TTAPF•US•PINK $1.18B·$0.29·+0.00% | | $1.18B | $0.29 | +0.00% | - | |
| 34 | TT TTW•TH $1.14B·$0.29·+0.54% | | $1.14B | $0.29 | +0.54% | 1.1M | |
| 35 | 08 China Water Affairs Group Ltd 0855•HK•HK $1.06B·$0.65·+0.00% | | $1.06B | $0.65 | +0.00% | 2.7M | |
| 36 | 30 300774•CN•SHE $1.05B·$2.56·+2.18% | | $1.05B | $2.56 | +2.18% | 10.0M | |
| 37 | AH Athens Water Supply and Sewerage Company S.A AHWSF•US•PINK $862.65M·$8.10·+0.00% | | $862.65M | $8.10 | +0.00% | - | |
| 38 | 68 Suntar Environmental Technology Co 688101•CN•SHG $820.61M·$3.04·-3.86% | | $820.61M | $3.04 | -3.86% | 8.6M | |
| 39 | 60 Jiangsu Jiangnan Water Co Ltd 601199•CN•SHG $815.41M·$0.94·+13.50% | | $815.41M | $0.94 | +13.50% | 33.8M | |
| 40 | 60 Wuhan Sanzhen Industry Holding Co Ltd 600168•CN•SHG $790.20M·$0.75·+0.20% | | $790.20M | $0.75 | +0.20% | 6.6M | |
| 41 | 60 Qian Jiang Water Resources Development Co Ltd 600283•CN•SHG $778.42M·$1.36·+0.22% | | $778.42M | $1.36 | +0.22% | 8.5M | |
| 42 | 60 603817•CN•SHG $746.85M·$1.07·-2.80% | | $746.85M | $1.07 | -2.80% | 16.2M | |
| 43 | 30 Gansu Dayu Water saving Group 300021•CN•SHE $741.09M·$0.67·+0.89% | | $741.09M | $0.67 | +0.89% | 18.2M | |
| 44 | 60 Jiangsu United Water Technology Co. Ltd. Cl A 603291•CN•SHG $736.15M·$1.82·+9.53% | | $736.15M | $1.82 | +9.53% | 11.2M | |
| 45 | 30 Shenzhen Water Planning & Design Institute Co. Ltd. 301038•CN•SHE $733.08M·$3.09·+7.47% | | $733.08M | $3.09 | +7.47% | 10.5M | |
| 46 | 60 Guangxi Nanning Waterworks Co 601368•CN•SHG $708.85M·$0.74·-0.79% | | $708.85M | $0.74 | -0.79% | 6.6M | |
| 47 | 60 Haitian Water Group Co.Ltd 603759•CN•SHG $673.51M·$1.35·+0.00% | | $673.51M | $1.35 | +0.00% | 4.6M | |
| 48 |  Premium Water Holdings,Inc. 2588•JP $647.87M·$22.04·+2.67% | | $647.87M | $22.04 | +2.67% | 25.1K | |
| 49 | 52 5272•MY•KLSE $621.37M·$0.49·+1.05% | | $621.37M | $0.49 | +1.05% | 2.0M | |
| 50 | CW Consolidated Water Co Ltd CWCO•US•NASDAQ $553.30M·$32.86·-0.60% | | $553.30M | $32.86 | -0.60% | 89.1K | |