CWT
California Water Service Group
PE ratio, current and historical analysis
As of Jun 29, 2026, the California Water Service Group stock's PE ratio is 24.46. This takes into account the latest EPS of $2 and stock price of $48.91. The PE ratio has grown by 18% from its last 4 quarters average of 20.7.
CWT PE ratio history
The PE ratio of California Water Service Group has averaged 31.89 over the last ten years. The current P/E ratio of 24.46 is 23% lower than the historical average. Looking back at the last ten years, CWT's PE ratio peaked in the Sep 2023 quarter at 64.81, when the price was $47.31 and the EPS was $0.73. The lowest point was in the Dec 2024 quarter, when it reached 13.9 with a price of $45.33 and an EPS of $3.26.
California Water Service Group PE ratio by year
Maximum annual increase: 66.37% in 2023
Maximum annual decrease: -75.61% in 2024
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| 2025 | 20.15 | 44.96% | $43.33 | $2.15 |
| 2024 | 13.9 | -75.61% | $45.33 | $3.26 |
| 2023 | 57 | 66.37% | $51.87 | $0.91 |
| 2022 | 34.26 | -6.55% | $60.64 | $1.77 |
| 2021 | 36.66 | 33.65% | $71.86 | $1.96 |
| 2020 | 27.43 | -30.31% | $54.03 | $1.97 |
| 2019 | 39.36 | 12.33% | $51.56 | $1.31 |
| 2018 | 35.04 | 17.43% | $47.66 | $1.36 |
| 2017 | 29.84 | -10.23% | $45.35 | $1.52 |
| 2016 | 33.24 | 34.25% | $33.9 | $1.02 |
| 2015 | 24.76 | 19.73% | $23.27 | $0.94 |
| 2014 | 20.68 | -8.58% | $24.61 | $1.19 |
| 2013 | 22.62 | 44.26% | $23.07 | $1.02 |
| 2012 | 15.68 | -22.72% | $18.35 | $1.17 |
| 2011 | 20.29 | -2.03% | $18.26 | $0.9 |
California Water Service Group PE ratio by quarter (TTM)
| Year | PE ratio | PE change | Price | EPS |
|---|---|---|---|---|
| Mar 2026 | 22.67 | 12.51% | $45.34 | $2 |
| Dec 2025 | 20.15 | 0.55% | $43.33 | $2.15 |
| Sep 2025 | 20.04 | 0.91% | $45.89 | $2.29 |
| Jun 2025 | 19.86 | -6.54% | $45.48 | $2.29 |
| Mar 2025 | 21.25 | 52.88% | $48.46 | $2.28 |
| Dec 2024 | 13.9 | -11.07% | $45.33 | $3.26 |
| Sep 2024 | 15.63 | -2.01% | $54.22 | $3.47 |
| Jun 2024 | 15.95 | -13.88% | $48.49 | $3.04 |
| Mar 2024 | 18.52 | -67.51% | $46.48 | $2.51 |
| Dec 2023 | 57 | -12.05% | $51.87 | $0.91 |
| Sep 2023 | 64.81 | 45.61% | $47.31 | $0.73 |
| Jun 2023 | 44.51 | 3.25% | $51.63 | $1.16 |
| Mar 2023 | 43.11 | 25.83% | $58.2 | $1.35 |
| Dec 2022 | 34.26 | -3.76% | $60.64 | $1.77 |
| Sep 2022 | 35.6 | 5.73% | $52.69 | $1.48 |
CWT Price vs fair value
CWT average PE ratio chart
What this chart measures
The Historical Valuation Regime chart shows where the stock's current valuation sits relative to its own historical valuation range over the selected lookback period.
This is a history-relative tool, not a market-relative percentile. It does not compare the stock to other companies. Instead, it compares each historical valuation reading to the stock's own past readings.
Percentile logic
The threshold lines are calculated them from the stock's real historical values using percentile interpolation. That is why some colored bands are narrow while others are wide: the band widths reflect how the stock actually traded through time.
Regime map
| Historical percentile | Regime | Chart meaning |
|---|---|---|
| 0-10 | Historically Low | Deep cheap zone |
| >10-25 | Below Average | Cheap relative to history |
| >25-75 | Average | Within the normal historical range |
| >75-90 | Above Average | Expensive relative to history |
| >90-100 | Historically High | Extreme or stretched valuation |
How to read each part
| Chart element | What it tells you |
|---|---|
| Main line | The actual historical valuation values over time for the selected metric. |
| Dashed horizontal lines | The stock's computed P10, P25, Median, P75, and P90 thresholds for the selected period. |
| Colored bands | The historical valuation zones between those thresholds. |
| Metric boxes | Current ratio, historical median, current percentile, and current regime. |
| Timeline strip | A condensed regime history showing how the stock moved between cheap, fair, and expensive states across each observation. |
Important metric definitions
Current Percentile is the percentile rank of the latest valid historical observation within the selected lookback range.
Current Regime is assigned directly from the latest observation's percentile bucket using the fixed 10 / 25 / 75 / 90 cutoffs shown above.
How to use it well
This chart is most useful for answering a narrow question: Is this stock trading high, low, or normal relative to its own history? It works best alongside growth, profitability, and forward-looking business analysis, because a stock can deserve a higher or lower regime if its business quality has changed.
CWT's current PE ratio is lower than its 3, 5 and 10-year averages.
PE comparison
California Water Service Group's price to earnings (P/E) of 24.46 is higher than the Utilities sector, the industry and its peers average. In comparison with the Utilities sector average of 20.4, California Water Service Group's price to earnings (P/E) is 20% higher.
CWT PE vs peers
In comparison to its peer stocks AWK and AWR, CWT's PE ratio is higher. California Water Service Group's PE ratio is trading above the peer average of 20.96.
| Stock name | PE ratio | Market cap |
|---|---|---|
| ARTNA Artesian Resources Corp | 14.99 | $351.24M |
| PCYO Pure Cycle Corp | 18.84 | $263.46M |
| HTO H2O America | 20.89 | $2.55B |
| YORW York Water Co | 20.97 | $499.73M |
| MSEX Middlesex Water Co | 23.35 | $1.04B |
| AWK American Water Works Company Inc | 23.49 | $25.87B |
| AWR American States Water Co | 24.21 | $3.24B |
| CWT California Water Service Group | 24.46 | $2.93B |
| CDZI Cadiz Inc | N/A | $326.25M |
Frequently asked questions
What is California Water Service Group's PE ratio?
The price to earnings ratio for CWT stock is 24.46 as of Jun 29, 2026.
What is the 3-year average PE ratio for California Water Service Group (CWT)?
The 3-year average price to earnings ratio for CWT stock is 26.34.
What is the 5-year average PE ratio for California Water Service Group (CWT)?
The 5-year average price to earnings ratio for CWT stock is 30.16.
What is the highest PE ratio for CWT?
The highest quarterly PE ratio in the last ten years has been 64.81 and it was in the Sep 2023 quarter.
How does the current PE ratio for CWT compare to its historical average?
CWT's price to earnings ratio is currently 23% below its 10-year historical average.
How is CWT's PE ratio calculated (California Water Service Group PE ratio formula)?
The P/E ratio is obtained by dividing the latest price of a stock by its trailing twelve months EPS. As of today (Jun 29, 2026), California Water Service Group's share price is $48.91. The company's earnings per share for the trailing twelve months (TTM) ending Mar 2026 is $2. Therefore, California Water Service Group's PE ratio for today is 24.46. PE RATIO(24.46) = STOCK PRICE($48.91) / TTM EPS($2)
All PE ratio stats are based on quarterly TTM periods, unless otherwise specified.