Investors have realized the value in water investments, as companies that manage potable water for consumption or irrigation are becoming profitable. The scarcity of water has taken the resource to a commodity-level investment and exchange traded funds (ETFs) are a way to get good portfolio exposure.

For investors interested in the water sector, there are many options as far as ETFs are concerned. Getting exposure to companies involved in the conservation and creation of potable water, to the companies that supply the machinery to make this possible are all ways to profit from water, explains Green Investing Now.

As conservation becomes key to create sustainable businesses, the current business model used now may be transformed into a more sustainable production process.

Here are a few of the related ETFs to choose from:

• PowerShares Global Water Portfolio (PIO): expense ratio 0.75%; this ETF is international, with a 30.7% weighting in the United States. It seeks to replicate the performance of the Palisades Global Water Index.

• PowerShares Water Resources Portfolio (PHO): expense ratio 0.66%; this ETF focuses on the provision of potable water, the treatment of water and technology and services directly related to water consumption.

• Claymore S&P Global Water ETF (CGW): expense ratio 0.65%; the companies in this ETF are associated with demand of water, water utilities, infrastructure, equipment, instruments and materials. The index focuses on global developed markets.

• First Trust ISE Water Index Fund (FIW): expense ratio is 0.77%; the index includes the top 36 stocks in the industry and the portfolio is balanced twice a year.

For more stories on water, visit our water category.

Tags: CGW, FIW, PHO, PIO, Sector ETFs, Socially Responsible ETFs, Water