American States Water Company's (NYSE:AWR) price-to-earnings (or "P/E") ratio of 25.5x might make it look like a sell right now compared to the market in the United States, where around half of the companies have P/E ratios below 17x and even P/E's below 10x are quite common. Nonetheless, we'd need to dig a little deeper to determine if there is a rational basis for the elevated P/E.

American States Water could be doing better as its earnings have been going backwards lately while most other companies have been seeing positive earnings growth. One possibility is that the P/E is high because investors think this poor earnings performance will turn the corner. If not, then existing shareholders may be extremely nervous about the viability of the share price.

Check out our latest analysis for American States Water

Keen to find out how analysts think American States Water's future stacks up against the industry? In that case, our free report is a great place to start.

What Are Growth Metrics Telling Us About The High P/E?

There's an inherent assumption that a company should outperform the market for P/E ratios like American States Water's to be considered reasonable.

If we review the last year of earnings, dishearteningly the company's profits fell to the tune of 5.8%. Regardless, EPS has managed to lift by a handy 22% in aggregate from three years ago, thanks to the earlier period of growth. Although it's been a bumpy ride, it's still fair to say the earnings growth recently has been mostly respectable for the company.

Turning to the outlook, the next three years should generate growth of 5.5% per year as estimated by the two analysts watching the company. That's shaping up to be materially lower than the 11% each year growth forecast for the broader market.

With this information, we find it concerning that American States Water is trading at a P/E higher than the market. It seems most investors are hoping for a turnaround in the company's business prospects, but the analyst cohort is not so confident this will happen. Only the boldest would assume these prices are sustainable as this level of earnings growth is likely to weigh heavily on the share price eventually.

The Key Takeaway

Typically, we'd caution against reading too much into price-to-earnings ratios when settling on investment decisions, though it can reveal plenty about what other market participants think about the company.

We've established that American States Water currently trades on a much higher than expected P/E since its forecast growth is lower than the wider market. Right now we are increasingly uncomfortable with the high P/E as the predicted future earnings aren't likely to support such positive sentiment for long. Unless these conditions improve markedly, it's very challenging to accept these prices as being reasonable.

There are also other vital risk factors to consider before investing and we've discovered 2 warning signs for American States Water that you should be aware of.

Of course, you might also be able to find a better stock than American States Water. So you may wish to see this free collection of other companies that have reasonable P/E ratios and have grown earnings strongly.

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