| 1 | AW American Water Works Company Inc. AWC•DE•XETRA $28.08B·$136.06·-3.72% | | $28.08B | $136.06 | -3.72% | 421 | |
| 2 | AW AWK•US•NYSE $27.27B·$133.58·-2.32% | | $27.27B | $133.58 | -2.32% | 1.9M | |
| 3 |  Companhia de Saneamento Básico do Estado de São Paulo - SABESP SBSP3•BR•SA $19.69B·$29.06·+4.87% | | $19.69B | $29.06 | +4.87% | 2.3M | |
| 4 | ST STRNY•US•PINK $12.69B·$39.53·-5.06% | | $12.69B | $39.53 | -5.06% | 1.9K | |
| 5 | WT WTRG•US•NYSE $11.79B·$39.70·-2.39% | | $11.79B | $39.70 | -2.39% | 1.3M | |
| 6 | UU United Utilities Group PLC ADR UUGRY•US•PINK $11.42B·$33.38·-5.57% | | $11.42B | $33.38 | -5.57% | 163 | |
| 7 | GG Guangdong Investment Limited GGDVF•US•PINK $6.48B·$0.88·+0.00% | | $6.48B | $0.88 | +0.00% | - | |
| 8 |  0270•HK•HK $6.43B·$0.96·+0.67% | | $6.43B | $0.96 | +0.67% | 12.9M | |
| 9 | GG GGDVY•US•PINK $6.18B·$47.36·+0.23% | | $6.18B | $47.36 | +0.23% | - | |
| 10 |  Companhia de Saneamento de Minas Gerais CSMG3•BR•SA $3.85B·$10.41·-1.12% | | $3.85B | $10.41 | -1.12% | 1.9M | |
| 11 | 03 Beijing Enterprises Water Group Ltd 0371•HK•HK $3.63B·$0.36·-0.71% | | $3.63B | $0.36 | -0.71% | 30.1M | |
| 12 | 60 Grandblue Environment Co Ltd 600323•CN•SHG $3.45B·$4.26·+0.00% | | $3.45B | $4.26 | +0.00% | 4.7M | |
| 13 | 60 Chongqing Water Group Co Ltd 601158•CN•SHG $3.23B·$0.65·+0.00% | | $3.23B | $0.65 | +0.00% | 16.1M | |
| 14 | BJ Beijing Enterprises Water Group Limited BJWTY•US•PINK $3.15B·$22.00·+0.00% | | $3.15B | $22.00 | +0.00% | - | |
| 15 | 00 Chengdu Xingrong Investment Co Ltd 000598•CN•SHE $3.12B·$0.98·-4.26% | | $3.12B | $0.98 | -4.26% | 30.9M | |
| 16 | AW American States Water Company AWR•US•NYSE $2.96B·$73.26·+0.66% | | $2.96B | $73.26 | +0.66% | 240.8K | |
| 17 | CW California Water Service Group CWT•US•NYSE $2.70B·$44.27·+2.31% | | $2.70B | $44.27 | +2.31% | 380.9K | |
| 18 | SA Companhia de Saneamento do Paraná - SANEPAR SAPR3•BR•SA $2.54B·$1.86·+7.34% | | $2.54B | $1.86 | +7.34% | 381.9K | |
| 19 | 00 Zhongshan Public Utilities Group Co Ltd 000685•CN•SHE $2.51B·$1.55·-8.08% | | $2.51B | $1.55 | -8.08% | 12.0M | |
| 20 | SA Companhia de Saneamento do Paraná - SANEPAR SAPR4•BR•SA $2.29B·$1.53·+1.39% | | $2.29B | $1.53 | +1.39% | 3.2M | |
| 21 | MW MWTCF•US•PINK $2.22B·$0.75·+0.00% | | $2.22B | $0.75 | +0.00% | - | |
| 22 | MW Manila Water Company Inc ADR MWTCY•US•PINK $1.97B·$17.40·+0.00% | | $1.97B | $17.40 | +0.00% | - | |
| 23 | 60 Jiangxi Hongcheng Waterworks Co Ltd 600461•CN•SHG $1.88B·$1.43·+0.00% | | $1.88B | $1.43 | +0.00% | 12.3M | |
| 24 | 00 Guangdong Shunkong Development Co Ltd 003039•CN•SHE $1.52B·$2.21·-8.75% | | $1.52B | $2.21 | -8.75% | 7.2M | |
| 25 | 30 300774•CN•SHE $1.38B·$2.50·-13.51% | | $1.38B | $2.50 | -13.51% | 11.3M | |
| 26 | 30 Beijing Water Business Doctor 300055•CN•SHE $1.30B·$1.39·-5.04% | | $1.30B | $1.39 | -5.04% | 34.5M | |
| 27 | CA CASAN - Companhia Catarinense de Aguas e Saneamento CASN3•BR•SA $1.12B·$1.62·+0.00% | | $1.12B | $1.62 | +0.00% | - | |
| 28 | TT TTW•TH $1.12B·$0.28·+0.00% | | $1.12B | $0.28 | +0.00% | 3.2M | |
| 29 | 08 China Water Affairs Group Ltd 0855•HK•HK $1.11B·$0.64·-5.81% | | $1.11B | $0.64 | -5.81% | 1.3M | |
| 30 | AH Athens Water Supply and Sewerage Company S.A AHWSF•US•PINK $862.65M·$8.10·+0.00% | | $862.65M | $8.10 | +0.00% | - | |
| 31 | 68 Suntar Environmental Technology Co 688101•CN•SHG $825.42M·$2.30·+0.00% | | $825.42M | $2.30 | +0.00% | 2.7M | |
| 32 | 60 Jiangsu Jiangnan Water Co Ltd 601199•CN•SHG $804.40M·$0.84·+0.00% | | $804.40M | $0.84 | +0.00% | 15.7M | |
| 33 | 60 Wuhan Sanzhen Industry Holding Co Ltd 600168•CN•SHG $779.53M·$0.75·+0.00% | | $779.53M | $0.75 | +0.00% | 15.5M | |
| 34 | 60 Qian Jiang Water Resources Development Co Ltd 600283•CN•SHG $767.91M·$1.33·+0.00% | | $767.91M | $1.33 | +0.00% | 7.8M | |
| 35 | 60 603817•CN•SHG $736.76M·$1.27·+0.00% | | $736.76M | $1.27 | +0.00% | 80.3M | |
| 36 | 30 Gansu Dayu Water saving Group 300021•CN•SHE $731.08M·$0.63·-7.71% | | $731.08M | $0.63 | -7.71% | 16.0M | |
| 37 | 60 Jiangsu United Water Technology Co. Ltd. Cl A 603291•CN•SHG $726.21M·$1.67·+0.00% | | $726.21M | $1.67 | +0.00% | 8.3M | |
| 38 | 30 Shenzhen Water Planning & Design Institute Co. Ltd. 301038•CN•SHE $723.18M·$3.01·-7.03% | | $723.18M | $3.01 | -7.03% | 4.5M | |
| 39 | 60 Guangxi Nanning Waterworks Co 601368•CN•SHG $699.28M·$0.76·+0.00% | | $699.28M | $0.76 | +0.00% | 13.2M | |
| 40 | 60 Haitian Water Group Co.Ltd 603759•CN•SHG $664.41M·$1.47·+0.00% | | $664.41M | $1.47 | +0.00% | 5.6M | |
| 41 |  Premium Water Holdings,Inc. 2588•JP $639.67M·$25.54·-0.86% | | $639.67M | $25.54 | -0.86% | 8.5K | |
| 42 | U9 U9E•SG $569.85M·$0.18·-2.13% | | $569.85M | $0.18 | -2.13% | 128.0K | |
| 43 | CW Consolidated Water Co Ltd CWCO•US•NASDAQ $553.30M·$32.46·+2.98% | | $553.30M | $32.46 | +2.98% | 133.2K | |
| 44 | 18 China Everbright Water Ltd 1857•HK•HK $540.34M·$0.19·-0.67% | | $540.34M | $0.19 | -0.67% | 221.0K | |
| 45 | 60 Heilongjiang Interchina Water Treatment Co Ltd 600187•CN•SHG $475.17M·$0.27·+0.00% | | $475.17M | $0.27 | +0.00% | 48.4M | |
| 46 | CD CDZI•US•NASDAQ $433.23M·$4.82·-0.41% | | $433.23M | $4.82 | -0.41% | 358.3K | |
| 47 | 30 Hynar Water Group Co. Ltd. 300961•CN•SHE $369.00M·$1.88·-18.31% | | $369.00M | $1.88 | -18.31% | 16.8M | |
| 48 | 00 Bohai Water Industry Co Ltd 000605•CN•SHE $364.72M·$1.00·-6.12% | | $364.72M | $1.00 | -6.12% | 10.7M | |
| 49 | 08 SIIC Environment Holdings Ltd 0807•HK•HK $361.57M·$0.14·-1.80% | | $361.57M | $0.14 | -1.80% | 132.0K | |
| 50 | AR Artesian Resources Corporation ARTNB•US•OTCQB $345.59M·$33.51·+0.00% | | $345.59M | $33.51 | +0.00% | - | |