China Water Industry Group Limited (HKG:1129) shareholders that were waiting for something to happen have been dealt a blow with a 28% share price drop in the last month. The recent drop completes a disastrous twelve months for shareholders, who are sitting on a 52% loss during that time.

Although its price has dipped substantially, there still wouldn't be many who think China Water Industry Group's price-to-sales (or "P/S") ratio of 0.3x is worth a mention when the median P/S in Hong Kong's Water Utilities industry is similar at about 0.6x. While this might not raise any eyebrows, if the P/S ratio is not justified investors could be missing out on a potential opportunity or ignoring looming disappointment.

What Does China Water Industry Group's Recent Performance Look Like?

For instance, China Water Industry Group's receding revenue in recent times would have to be some food for thought. One possibility is that the P/S is moderate because investors think the company might still do enough to be in line with the broader industry in the near future. If you like the company, you'd at least be hoping this is the case so that you could potentially pick up some stock while it's not quite in favour.

What Are Revenue Growth Metrics Telling Us About The P/S?

In order to justify its P/S ratio, China Water Industry Group would need to produce growth that's similar to the industry.

Retrospectively, the last year delivered a frustrating 38% decrease to the company's top line. The last three years don't look nice either as the company has shrunk revenue by 45% in aggregate. Accordingly, shareholders would have felt downbeat about the medium-term rates of revenue growth.

Weighing that medium-term revenue trajectory against the broader industry's one-year forecast for expansion of 18% shows it's an unpleasant look.

With this information, we find it concerning that China Water Industry Group is trading at a fairly similar P/S compared to the industry. It seems most investors are ignoring the recent poor growth rate and are hoping for a turnaround in the company's business prospects. Only the boldest would assume these prices are sustainable as a continuation of recent revenue trends is likely to weigh on the share price eventually.

The Bottom Line On China Water Industry Group's P/S

China Water Industry Group's plummeting stock price has brought its P/S back to a similar region as the rest of the industry. It's argued the price-to-sales ratio is an inferior measure of value within certain industries, but it can be a powerful business sentiment indicator.

The fact that China Water Industry Group currently trades at a P/S on par with the rest of the industry is surprising to us since its recent revenues have been in decline over the medium-term, all while the industry is set to grow. When we see revenue heading backwards in the context of growing industry forecasts, it'd make sense to expect a possible share price decline on the horizon, sending the moderate P/S lower. Unless the the circumstances surrounding the recent medium-term improve, it wouldn't be wrong to expect a a difficult period ahead for the company's shareholders.

Having said that, be aware China Water Industry Group is showing 2 warning signs in our investment analysis, and 1 of those can't be ignored.

If companies with solid past earnings growth is up your alley, you may wish to see this free collection of other companies with strong earnings growth and low P/E ratios.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.