We know that water is a serious environmental and social issue. The following two green enterprises are looking to tackle the problem of water-related waste, wish a social justice twist. These green businesses have created products that help reduce plastic water bottle and filtration-related waste so that you can drink more eco-responsibly, and both give back by donating a portion of their profits to nonprofits to spread the love.

Hydros Movement to Fight the Global Water Crisis

Americans spent $15 billion last year on bottled water, but Hydros hopes to save consumers money and tackle the plastic bottle waste problem with their Filtering Water Bottle. Using a built-in water filter, you can get 450 gallons of filtered water for the price of a single bottle of water, and for every Hydros Filter, Americans keep 200 plastic water bottles from landfills.

The simple filtration concept starts by filling the bottle through the side port (the only bottle like it in the world!) at the tap, a water fountain, or any other potable water source. You then close the top and take it with you. The water is filtered quickly and easily as it enters into the bottle – so unlike other filter water bottle models, this one requires no squeezing or sucking to draw the water through the filter. This 100% Made in America bottle comes in five colors and has a fun twist cap for spill-free, but easy-access drinking on the go. The Hydros Filter Reclamation Program allows you to ensure your spent filter is recycled properly rather than ending up in a landfill. You can either recycle your filter at participating retail locations, or mail your filters to Hydros in Philadelphia.

The Hydros bottle boasts many health and environmental benefits: it’s BPA-free and phthalate-free, made in America, and removes off flavors using an activated carbon filtration system. It also includes the ANSI/NSF standard 42 water filter to reduce chlorine, chloramine, and particles. And it prevents the build-up of microbial contaminants using a natural, anti-microbial filter. It is also durable and dishwasher safe so it’s easy to clean and will last for years to come.

Perhaps best of all is that $1 from every purchase goes to supporting sustainable water infrastructure projects in developing countries through Engineers Without Borders.

The Only Compostable Water Filter – Kishu Natural Charcoal Filtration

The Japanese have been filtering their water using a unique form of charcoal for centuries, and Kishu is now bringing the concept to the masses with their compostable water filtration system. The technique of creating the charcoal for this type of water filtration involves taking branches from holm oak trees that grow exclusively in Japanese Wakayama forests and slowly firing them in traditional kilns for several days. What results is a single piece of charcoal that usually lasts up to six months. And when it’s exhausted, the charcoal can simply be composted.

Extensively tested at the Colorado State University in their Soil, Water and Plant Testing Lab, the Kishu system has been shown to absorb toxins such as lead, mercury, chlorine, cadmium, and copper. And when you purchase a Kishu water filter, 2% of the profits are donated to globalgiving.org, helping to spread the social goodness.

Both of these businesses recently were named in the GreenDeals.org Top 6 Green Businesses list for 2012.