"Wealth building is about buying quality on the cheap; and you're not going to find the best water industry stocks at better prices than they sell for now," says utility sector specialist Roger Conrad.

In his The Utility Forecaster, the advisor reviews the three water stocks that earn a place among the core holdings in his growth portfolio: Aqua America (NYSE: WTR), Consolidated Water (NASDAQ: CWCO) and Southwest Water (NASDAQ: SWWC).

"All three of these water stocks posted disappointing first quarter earnings for very different reasons. However, all remain tapped into long-run, wealth-building opportunities.

"Aqua's first quarter results were by no means a disaster. But they lagged both last year's total and Wall Street estimates.

"Management blamed the slowing economy's impact on housing starts in what had been fast-growing systems, rising bad debt, lower commercial sales, delays in fully digesting acquisitions in the South and longer-than-expected timetables needed to win rate increases.

"What is one thing you can't live without?" asks Brandon Clay and Ron Rowland. "Take away that glass of cool, clean drinking water from your diet, then it's a matter of days before you dehydrate and die." ons

In All Star Investor, they explain, "Water is essential to our survival." And for investors, they add, "Powershares Water Resources Portfolio (ASE: PHO) is a perfect play on the global demand for water technology."

"The essential nature of water is the same for the 6.67 billion people on this planet. With Latin America and Asia entering the modern world at an unprecedented pace, water is becoming even scarcer.

"Improving diets and growing industry have pushed this diminishing resource further from the reach of many people. Yes, people are still drinking water, but at what cost?

"Water covers most of our planet. Still, less than 2% is fresh water. That makes water a limited resource. Consumption is growing with 6,000 cubic meters per inhabitant used every year. That's the equivalent of draining Lake Superior – the biggest lake in the world – twice. Since the water cycle is not replenishing growing demand, water sources are being depleted.

"One essential commodity that is often overlooked by investors is water," says Gregory Dorsey, contributing editor to Stephen Leeb's Income Performance Letter.

He explains, "It's absolutely vital and is in growing demand for many reasons. And we've found an excellent way for income investors to ride this trend -- Paris-based Veolia Environnement (NYSE: VE). Here is his review.

"Veolia is not your typical utility, but it's still a utility that every income investor should consider. Veolia is the world leader in the management of water and wastewater services for local governments, industrial and service sector clients.

"It's also a world leader in the design, construction and operation of facilities for water and wastewater systems. With a focus on managing the complete water cycle from extraction to treatment to waste, Veolia stands ahead of its competitors.

"But although water is the chief attraction for us, Veolia generates steady revenue and income from other businesses as well.

"Its Veolia Environmental Services covers the entire solid waste cycle, including urban cleaning services, soil and site remediation, collection, sorting, transfer, treatment and recycling/recovery and is the world's largest waste management company.

Two leading global experts have both turned bullish on France's Veolia Environnement (NYSE: VE). Vivian Lewis, in her Global Investing, notes, "Veolia is the way to play the 'water works square' on the monopoly board."

Nicholas Vardy, editor of Global Stock Investor suggests, "The smart money is betting that water may be the 'oil of the 21st century.' And Veolia is my number one way to profit from this global megatrend."

Vivan Lewis says, "We recommend buying French water and sewage conglomerate Veolia at current prices; the stock has been brought down by niggling Euro-concern about its levels of debt. The company is also being penalized for acquisitions.

"Veolia is the former Générale des Eaux, a municipal service firm. This history creates an image problem for VE which is seen as a utility.

"Our main reason for the buy, apart from price, is that this is a fast growing company with good earnings in a hot sector. In 2007, VE had revneues of euros 32.6 bn, up 14% on which its recurring net profit fost 22.5% to euros 933.2 mn. Earnings per share were euros 2.16, up 13.7%.

"Another reason for liking VE is that it is moving into China big-time, with waterworks in Tianshin and Shibai and environmental service in Juijiang. All in all, France still represents 44% of sales and the rest of Europe 36%. VE does about 10% of its business in the U.S. and the Chinese are part of the remainder.

"We've been tracking the water industry for a while and it's been crystal clear that water is an area we want to dive into," says Toby Smith in his ChangeWave Investing. Here, he looks at a water-focused ETF.

"Water is often taken for granted, but that is changing. A combination of global economic growth and years of neglect are leading to a tidal wave of demand for water infrastructure and various technologies.

"It's forecasted that by 2025, almost two-thirds of the global population will live in countries where water will be a scarce commodity. Climate change could exacerbate the problem. Clearly, water issues cross all boundaries.

The water industry combines the best attributes of a good defensive strategy coupled with numerous 'offensive' plays. From a growth perspective, spending on water projects at all levels is on the upswing due to years of infrastructure neglect and under-investment.

"One great way for all investors to participate is by investing in an ETF with a water focus, such as PowerShares Water Resources (NYSE: PHO).

"The beauty of this water ETF is that it gives us exposure to each of the companies that were highest rated in our survey (comprising approximately one-third of the PHO holdings). PHO also has a well-balanced portfolio, with no single stock representing more that 4% of the total. IN our view, it's clear that the water industry will see above-average growth well into the future."

Each day, Steven Halpern's TheStockAdvisors.com offers the latest market commentary and favorite investment ideas from the nation's leading financial newsletter advisors.

"Water is the sleeper investment of the decade," says Jim Powell. "Although the world is focused on energy, clean water is in far shorter supply in many regions. That's even true in many parts of the U.S."

The editor of Growth Stock Alert suggests, "A great deal of money will be made by today's earlybird investors who buy strategic water stocks." Here are his favorites in the sector.

"Unlike oil, there is no substitute for water. Some investors mistakenly think that water is a low value commodity that's not likely to deliver good profits. What the critics fail to consider is the equipment needed to
obtain, purify, transport and recycle water is very expensive.

"Calgon Carbon (NYSE: CCC) is my first choice in a water stock. The company is the world's largest supplier of
granulated activated carbon, the principal purification agent for water. The company also supplies complete treatment systems for municipalities and private organizations.

"The company has 16 operating centers and 23 sales and service offices around the world. A few years ago

, the company expanded its purification business to include industrial liquids and gasses. Rising concerns about greenhouse emissions and other pollutants are giving Calgon Carbon another boost.

"I also recommend ITT Corporation (NYSE: ITT), the world's leading supplier of systems that move and purify
water. The company's treatment equipment is sold throughout the world under the Sanitaire, Aquious and WEDECO brands.