Largest Utilities - Regulated Water Companies by Market Cap

Largest Utilities - Regulated Water companies by market cap. The Utilities - Regulated Water sector has 82 publicly listed stocks with a combined market cap of $149.68 Billion. American Water Works leads the sector with a market cap of $26.81 Billion. This ranking covers all Utilities - Regulated Water stocks globally — from large-cap industry leaders to mid-cap and small-cap companies — ranked by market capitalization and updated daily.

Total Market Cap (USD)

$149.68 Billion

Companies Listed

82

Largest Company

American Water Works

Top Utilities - Regulated Water Stocks by Market Capitalization (October 2026)

Top Utilities - Regulated Water stocks by market capitalization as of October 2026, covering 82 publicly listed companies.

Rank Company Market Cap (USD) Market Cap (Local) Country Price 24h Change 7d Change 24h Volume
1 American Water Works
NYSE:AWK 		$26.81 Billion $26.81 Billion USA $142.21 +1.73% +5.53% 46.12 Million
2 American Water Works Company Inc.
F:AWC 		$20.87 Billion €17.85 Billion Germany €126.30 +0.20% +5.51% 2.40K
3 Companhia de Saneamento Básico do Estado de São Paulo - SABESP
F:SAJA 		$16.97 Billion €14.52 Billion Germany €4.14 -2.36% -25.41% 5.33K
4 Essential Utilities Inc
NYSE:WTRG 		$11.36 Billion $11.36 Billion USA $42.78 +1.21% +5.01% 54.96 Million
5 UNITED UTILITIES GP ADR/2
F:UUEA 		$9.46 Billion €8.09 Billion Germany €30.20 +0.67% -1.95% 1.99K
6 GUANGDONG INV.UNSP.ADR/50
F:GUG0 		$5.51 Billion €4.71 Billion Germany €42.80 +0.94% +0.47% 600.00
7 Grandblue Environment Co Ltd
SHG:600323 		$3.74 Billion CN¥25.56 Billion China CN¥31.35 +1.16% +2.59% 115.88 Million
8 Companhia de Saneamento de Minas Gerais
SA:CSMG3 		$3.65 Billion R$18.62 Billion Brazil R$49.11 -1.78% -22.05% 163.07 Million
9 Companhia de Saneamento Básico do Estado de São Paulo - SABESP
SA:SBSP3 		$3.45 Billion R$17.60 Billion Brazil R$25.14 +0.12% -21.51% 722.88 Million
10 American States Water Company
NYSE:AWR 		$3.38 Billion $3.38 Billion USA $85.35 +1.08% +3.91% 5.67 Million
11 Chengdu Xingrong Investment Co Ltd
SHE:000598 		$3.13 Billion CN¥21.40 Billion China CN¥7.17 +1.41% +3.17% 339.60 Million
12 PENNON GROUP PLC UNS.ADR2
F:3PN0 		$3.04 Billion €2.60 Billion Germany €11.90 +0.00% -3.25% 480.00
13 California Water Service Group
NYSE:CWT 		$2.94 Billion $2.94 Billion USA $47.62 +1.00% +3.72% 9.79 Million
14 Chongqing Water Group Co Ltd
SHG:601158 		$2.86 Billion CN¥19.54 Billion China CN¥4.07 +0.25% +0.00% 162.46 Million
15 Zhongshan Public Utilities Group Co Ltd
SHE:000685 		$2.20 Billion CN¥15.01 Billion China CN¥10.23 -1.35% -0.87% 208.02 Million
16 Aguas Andinas S.A
SN:AGUAS-A 		$2.12 Billion CL$1.89 Trillion Chile CL$325.82 -1.56% -1.23% 126.49 Million
17 SJW Group Common Stock
NYSE:SJW 		$1.80 Billion $1.80 Billion USA $52.55 +0.00% +0.00% 232.56K
18 H2O America
NASDAQ:HTO 		$1.74 Billion $1.74 Billion USA $58.57 -5.23% +4.25% 15.93 Million
19 Jiangxi Hongcheng Waterworks Co Ltd
SHG:600461 		$1.64 Billion CN¥11.21 Billion China CN¥8.73 +0.81% -0.34% 336.39 Million
20 Athens Water Supply and Sewerage Company S.A
AT:EYDAP 		$1.26 Billion €1.07 Billion Greece €13.60 -1.59% +0.29% 2.02 Million
21 TTW Public Company Limited
BK:TTW 		$1.26 Billion ฿40.30 Billion Thailand ฿10.10 +1.00% +1.51% 66.35 Million
22 TTW Public Company Limited
BK:TTW-R 		$1.15 Billion ฿36.91 Billion Thailand ฿9.25 +0.00% +0.00% 5.38 Million
23 Guangdong Shunkong Development Co Ltd
SHE:003039 		$1.08 Billion CN¥7.36 Billion China CN¥11.92 -1.08% -0.25% 120.24 Million
24 Ranhill Holdings Ltd
KLSE:5272 		$1.04 Billion RM4.16 Billion Malaysia RM3.21 +0.00% +3.22% 31.76 Million
25 Inversiones Aguas Metropolitanas SA
SN:IAM 		$981.37 Million CL$877.52 Billion Chile CL$877.52 -0.84% -0.62% 13.03 Million
26 Middlesex Water Company
NASDAQ:MSEX 		$935.05 Million $935.05 Million USA $55.35 -0.05% +3.21% 3.36 Million
27 Jiangsu Jiangnan Water Co Ltd
SHG:601199 		$844.37 Million CN¥5.77 Billion China CN¥6.17 -2.06% -0.32% 306.71 Million
28 WHA Utilities and Power Public Company Limited
BK:WHAUP 		$816.67 Million ฿26.20 Billion Thailand ฿6.85 -2.84% +3.79% 233.21 Million
29 Companhia de Saneamento do Paraná - SANEPAR
SA:SAPR3 		$663.23 Million R$3.38 Billion Brazil R$6.71 -4.42% -27.93% 11.19 Million
30 Qian Jiang Water Resources Development Co Ltd
SHG:600283 		$629.45 Million CN¥4.30 Billion China CN¥7.67 -0.52% -2.54% 54.34 Million
31 Suntar Environmental Technology Co
SHG:688101 		$623.82 Million CN¥4.26 Billion China CN¥12.84 -1.68% -5.31% 38.73 Million
32 Wuhan Sanzhen Industry Holding Co Ltd
SHG:600168 		$610.53 Million CN¥4.17 Billion China CN¥4.20 -0.71% -1.87% 99.32 Million
33 Beijing Water Business Doctor
SHE:300055 		$574.26 Million CN¥3.92 Billion China CN¥4.69 -3.89% -8.75% 282.33 Million
34 Guangxi Nanning Waterworks Co
SHG:601368 		$573.68 Million CN¥3.92 Billion China CN¥4.44 +1.14% +0.23% 98.33 Million
35 Aris Water Solutions Inc
NYSE:ARIS 		$519.87 Million $519.87 Million USA $15.88 -3.41% -6.75% 39.98 Million
36 Gansu Dayu Water saving Group
SHE:300021 		$480.23 Million CN¥3.28 Billion China CN¥3.21 -2.73% -11.81% 294.77 Million
37 The York Water Company
NASDAQ:YORW 		$479.15 Million $479.15 Million USA $31.07 -0.61% +1.67% 3.93 Million
38 Shenzhen Water Planning & Design Institute Co. Ltd.
SHE:301038 		$474.64 Million CN¥3.24 Billion China CN¥14.54 -0.95% -7.09% 68.45 Million
39 Jiangsu United Water Technology Co. Ltd. Cl A
SHG:603291 		$473.77 Million CN¥3.24 Billion China CN¥7.65 -2.17% -4.37% 78.55 Million
40 WHA UTILITIES AND PO
BK:WHAUP-R 		$469.73 Million ฿15.07 Billion Thailand ฿3.94 +0.00% +0.00% 4.17 Million
41 Haixia Envrnmnt
SHG:603817 		$462.15 Million CN¥3.16 Billion China CN¥5.54 -1.42% +0.36% 287.25 Million
42 BGT Group Co. Ltd.
SHE:300774 		$449.81 Million CN¥3.07 Billion China CN¥7.52 -7.62% -12.56% 148.31 Million
43 Consolidated Water Co. Ltd
F:CW2 		$444.83 Million €380.48 Million Germany €23.78 -0.50% -3.80% 288.00
44 Consolidated Water Co Ltd
NASDAQ:CWCO 		$426.32 Million $426.32 Million USA $26.76 -0.89% -1.44% 2.59 Million
45 CN EVERBRIGHT WATER HD 1
F:BIU2 		$420.55 Million €359.72 Million Germany €0.14 -11.18% +0.00% 1.49K
46 Hynar Water Group Co. Ltd.
SHE:300961 		$322.45 Million CN¥2.20 Billion China CN¥12.43 +0.32% +12.29% 208.42 Million
47 Artesian Resources Corporation
NASDAQ:ARTNA 		$316.43 Million $316.43 Million USA $33.50 -0.86% +1.64% 644.61K
48 Road Environment Technology Co. Ltd. A
SHG:688156 		$296.82 Million CN¥2.03 Billion China CN¥20.14 -2.33% -26.09% 159.39 Million
49 Bohai Water Industry Co Ltd
SHE:000605 		$275.57 Million CN¥1.88 Billion China CN¥5.34 -1.11% -5.15% 93.17 Million
50 Zhejiang Heda Technology Co Ltd
SHG:688296 		$270.46 Million CN¥1.85 Billion China CN¥17.21 -1.38% -19.99% 139.68 Million
51 Heilongjiang Interchina Water Treatment Co Ltd
SHG:600187 		$257.40 Million CN¥1.76 Billion China CN¥1.09 -1.80% -2.68% 536.95 Million
52 Pure Cycle Corporation
NASDAQ:PCYO 		$255.26 Million $255.26 Million USA $10.59 -0.56% +0.28% 1.80 Million
53 Thu Dau Mot Water JSC
VN:TDM 		$250.73 Million ₫6.60 Trillion Vietnam ₫59400.00 +0.00% +0.00% 148.00K
54 Jiangsu Jingyuan Environmental Protection Co Ltd
SHG:688096 		$246.97 Million CN¥1.69 Billion China CN¥7.15 -1.52% -5.92% 239.77 Million
55 GreenTech Environmental Co Ltd
SHG:688466 		$236.66 Million CN¥1.62 Billion China CN¥13.24 +3.60% +2.80% 36.65 Million
56 Eastern Water Resources Development and Management Public Company Limited
BK:EASTW 		$229.21 Million ฿7.35 Billion Thailand ฿4.42 -0.90% -11.24% 151.14 Million
57 Global Water Resources Inc
NASDAQ:GWRS 		$224.54 Million $224.54 Million USA $7.81 +0.51% +2.09% 1.09 Million
58 AS Tallinna Vesi
F:A1T 		$216.00 Million €184.76 Million Germany €10.55 +0.00% -0.47% 0.00
59 Eastern Water Resources Development and Management Public Company Limited
F:7ES1 		$204.23 Million €174.69 Million Germany €0.11 -1.87% -10.26% 0.00
60 Kangda International Environmental Company Limited
STU:27K 		$184.56 Million €157.86 Million Germany €0.07 -6.92% +12.12% 0.00
61 PBA Holdings Bhd
KLSE:5041 		$168.70 Million RM671.91 Million Malaysia RM2.03 +0.00% +2.01% 6.89 Million
62 Duxton Water Ltd
AU:D2O 		$168.40 Million AU$238.01 Million Australia AU$1.53 +0.00% +0.00% 0.00
63 United Utilities Group PLC
LSE:UU 		$137.66 Million GBX1.13 Trillion UK GBX1523.00 +0.33% +2.84% 42.45 Million
64 Thessaloniki Water Supply & Sewerage Co S.A
AT:EYAPS 		$136.49 Million €116.75 Million Greece €4.50 +3.10% +2.63% 673.42K
65 Severn Trent PLC
LSE:SVT 		$120.40 Million GBX989.59 Billion UK GBX3276.00 +0.68% +1.99% 11.52 Million
66 Grupo Mexicano de Desarrollo S.A.B
MX:GMD 		$57.55 Million MX$999.98 Million Mexico MX$5.48 -2.14% -2.14% 66.03K
67 Ekopak BV
BR:EKOP 		$53.92 Million €46.12 Million Belgium €2.64 +1.35% +5.61% 183.04K
68 CONCORD ENVIRO SYSTEMS L
NSE:CEWATER 		$52.17 Million Rs4.82 Billion India Rs233.10 +0.93% -4.29% 862.26K
69 Rubicon Water Ltd
AU:RWL 		$37.17 Million AU$52.53 Million Australia AU$0.22 +0.00% -2.27% 2.22 Million
70 Clean TEQ Water Ltd
AU:CNQ 		$34.74 Million AU$49.10 Million Australia AU$0.56 -0.89% -3.48% 1.16 Million
71 CLEAN TEQ WATER LTD
F:9NK 		$34.34 Million €29.37 Million Germany €0.33 +7.10% -3.49% 7.71K
72 AQUA SA ZY 16
F:9S0 		$34.29 Million €29.33 Million Germany €2.28 +0.88% +3.64% 0.00
73 Pennon Group Plc
LSE:PNN 		$20.09 Million GBX165.10 Billion UK GBX349.80 -0.62% +4.92% 105.99 Million
74 Compagnie des Eaux de Royan
PA:MLEDR 		$6.81 Million €5.82 Million France €36.60 +0.00% -0.54% 722.00
75 Aquaporin AS
CO:AQP 		$4.07 Million Dkr26.02 Million Denmark Dkr0.57 +3.26% -47.22% 4.06 Million
76 TAIZHOU WATER GRP. H YC 1
F:GX5 		$3.07 Million €2.62 Million Germany €0.05 -1.87% -8.70% 0.00
77 Yunnan Water Investment Co. Limited
F:2WI 		$2.98 Million €2.55 Million Germany €0.01 +0.00% +0.00% 0.00
78 The Alumasc Group plc
LSE:ALU 		$1.12 Million GBX9.17 Billion UK GBX255.00 +1.59% +11.35% 1.44 Million
79 Forward Water Technologies Corp
V:FWTC 		$889.30K CA$1.23 Million Canada CA$0.03 -16.67% -28.57% 1.29 Million
80 MEMIONTEC HOLDINGS LTD
F:8900 		$669.97K €573.07K Germany €0.00 +0.00% +0.00% 0.00
81 HYDROTEC GES.F.WASSERT
HM:HYW 		$20.80K €17.79K Germany €0.00 +12.50% -50.00% 340.05K
82 TTW Public Company Limited
F:F1P 		$2.75K €2.36K Germany €0.26 +0.00% +1.56% 12.71K

How Utilities - Regulated Water Companies Are Ranked by Market Cap

Utilities - Regulated Water companies are ranked by market cap, the latest share price multiplied by shares outstanding, with each company counted once at its primary listing.

Track real-time market capitalization of largest public companies in the Utilities - Regulated Water industry. Compare marketcap, analyze stock performance, and discover leading utilities - regulated water corporations. View all industries