Question 1

What is California Water Service Group's P/E ratio?

Accepted Answer

California Water Service Group (CWT) P/E ratio is 23.0× as of June 5, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for California Water Service Group?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For California Water Service Group specifically, the relevant sector benchmark is the current sector median of 21.4×.

Question 5

Is California Water Service Group's P/E ratio high or low?

Accepted Answer

California Water Service Group's P/E ratio of 23.0× is below its own 5-year average of 30.2× and above the sector median of 21.4×. That places the current reading at the 47th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is California Water Service Group's historical P/E ratio range?

Accepted Answer

In the available daily series, California Water Service Group (CWT) P/E ratio has ranged from a low of 12.3× in 2025 to a high of 75.3× in 2023. The 5-year average is 30.2× and the 5-year median is 24.9×.

Question 7

What was California Water Service Group's P/E ratio in 2025?

Accepted Answer

California Water Service Group (CWT) P/E ratio at the end of 2025 was 20.1×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does California Water Service Group's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$2.58B	$128.21M	20.1×	+6.2×	Dec 31, 2025
2024	$2.66B	$190.81M	13.9×	-43.7×	Dec 31, 2024
2023	$2.99B	$51.91M	57.7×	+22.9×	Dec 31, 2023
2022	$3.34B	$96.01M	34.8×	-3.0×	Dec 31, 2022
2021	$3.82B	$101.13M	37.8×	+9.9×	Dec 31, 2021
2020	$2.70B	$96.83M	27.9×	-11.6×	Dec 31, 2020
2019	$2.49B	$63.12M	39.5×	+3.6×	Dec 31, 2019
2018	$2.29B	$63.80M	35.9×	+3.5×	Dec 31, 2018
2017	$2.18B	$67.18M	32.4×	-1.0×	Dec 31, 2017
2016	$1.63B	$48.67M	33.4×	+8.7×	Dec 31, 2016
2015	$1.11B	$45.02M	24.7×	+4.0×	Dec 31, 2015
2014	$1.18B	$56.74M	20.7×	-2.6×	Dec 31, 2014
2013	$1.10B	$47.25M	23.3×	+7.6×	Dec 31, 2013
2012	$769.01M	$48.83M	15.7×	-4.5×	Dec 31, 2012
2011	$763.61M	$37.71M	20.2×	-0.4×	Dec 31, 2011
2010	$776.60M	$37.66M	20.6×	+1.8×	Dec 31, 2010
2009	$764.38M	$40.55M	18.8×	-5.3×	Dec 31, 2009
2008	$961.78M	$39.80M	24.2×	-0.4×	Dec 31, 2008
2007	$765.13M	$31.16M	24.6×	-7.7×	Dec 31, 2007
2006	$824.36M	$25.58M	32.2×	+6.3×	Dec 31, 2006
2005	$702.79M	$27.07M	26.0×	-0.8×	Dec 31, 2005
2004	$691.48M	$25.87M	26.7×	+2.7×	Dec 31, 2004
2003	$463.94M	$19.30M	24.0×	+5.2×	Dec 31, 2003
2002	$358.90M	$19.07M	18.8×	-7.3×	Dec 31, 2002
2001	$391.09M	$14.96M	26.1×	—	Dec 31, 2001


American States Water (AWR)	22.1×
Middlesex Water (MSEX)	21.8×
Evergy (EVRG)	21.4×
H2O America (HTO)	21.2×
CMS Energy (CMS)	21.1×
Essential Utilities (WTRG)	20.5×
Ameren (AEE)	19.9×
Duke Energy (DUK)	19.8×
MGE Energy (MGEE)	19.8×
American Electric Power Company (AEP)	19.4×
Consolidated Edison (ED)	19.1×
Pinnacle West Capital (PNW)	18.7×
Dominion Energy (D)	18.3×
Black Hills (BKH)	18.2×
Exelon (EXC)	18.1×
Public Service Enterprise Group (PEG)	17.8×
Northwest Natural Holding (NWN)	17.7×
New Jersey Resources (NJR)	16.2×
Avista (AVA)	16.0×
Eversource Energy (ES)	14.9×
Artesian Resources (ARTNA)	14.1×
PG&E (PCG)	13.1×
UGI (UGI)	12.2×
Edison International (EIX)	7.6×
AES (AES)	7.5×

P/E Ratio for California Water Service Group (CWT)

P/E Ratio daily chart for California Water Service Group (CWT)

Historical P/E Ratio for California Water Service Group (CWT) from 2001 to 2025

About P/E Ratio at California Water Service Group (CWT)

California Water Service Group P/E Ratio by Year

California Water Service Group P/E Ratio 2025: 20.1×

California Water Service Group P/E Ratio 2024: 13.9×

California Water Service Group P/E Ratio 2023: 57.7×

California Water Service Group P/E Ratio 2022: 34.8×

California Water Service Group P/E Ratio 2021: 37.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

California Water Service Group (CWT) Key Financials

P/E Ratio daily chart for California Water Service Group (CWT)

Historical P/E Ratio for California Water Service Group (CWT) from 2001 to 2025

About P/E Ratio at California Water Service Group (CWT)

California Water Service Group P/E Ratio by Year

California Water Service Group P/E Ratio 2025: 20.1×

California Water Service Group P/E Ratio 2024: 13.9×

California Water Service Group P/E Ratio 2023: 57.7×

California Water Service Group P/E Ratio 2022: 34.8×

California Water Service Group P/E Ratio 2021: 37.8×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

+What is California Water Service Group's P/E ratio?

+How is the P/E ratio calculated?

+What is the P/E ratio?

+What is a good P/E ratio for California Water Service Group?

+Is California Water Service Group's P/E ratio high or low?

+What is California Water Service Group's historical P/E ratio range?

+What was California Water Service Group's P/E ratio in 2025?

+Why does California Water Service Group's P/E ratio change over time?

California Water Service Group (CWT) Key Financials