Green Options

In one of the strangest alliances in military history, the U.S. Army at Fort Sam Houston in San Antonio has joined with the golden-cheeked warbler to fight urban sprawl near the Camp Bullis Military Training Reservation.  Camp Bullis is a training ground for U.S. Army, Air Force, and Marines combat troops, and for medical units.  The 27,994-acre reservation includes 6,500 acres of prime habitat for the golden-cheeked warbler, which is on the endangered species list in Texas and the U.S.

Having grown up in the beautiful Chicagoland area in the 80’s my water needs were strictly as follows: Need #1: Water from hose to power clown-face sprinkler, fill water balloons, and hose off muddy dirt-bike/self, Need #2: Water from faucet to occasionally brush teeth and occasionally make Hi-C or Tang, Need #3: Water from shower to occasionally bathe. It was a simpler time, and I was a kid. To me and most other kids (adults?) in the 80’s water was simply there, always on the ready for any and all of the above dalliances.

The days of water-logged frivolity are over. We now live in a time where many parts of the world face water shortages, limited access to safe, clean drinking water, an ever-diminishing groundwater supply, and a growing number of water-related disease and death.

In fact, just last week, motivated by three years of water shortages in California, California Governor Arnold Schwarzenegger declared a state of emergency which may be followed by water rationing measures.

As a result of the myriad of water emergencies that the world faces I have put together a short-list of the 5 world-saving water solutions that offer hope for the future of our water, and therefore our existence.

For this the third entry in the annals of excellent excrement (after cow and E. coli poop), we will have to travel deep down into the heart of Texas…and then even farther down into the sewers of San Antonio. So don your rubber body suit, gas mask, and sense of humor, for sewage is no longer just stuff to be dumped and forgotten.

No, San Antonio is out to prove that sewage, and specifically the methane that it gives off oh so (i.e., too) naturally without any bother or cost to us, can be used as a source of alternative fuel…I mean it is natural gas, after all.

In an Associated Press story reported by CNN on its website on September 11, the San Antonio Water System plans to capture methane gas produced by the 140,000 tons of sewage it handles (sorry…bad word choice there) every year.1 Officials estimate that they will be able to capture as much as 900,000 cubic feet of methane annually from this big old pile of people poop.

But what do you do with nearly a million tons of methane? If you are a high school kid, you might get a matchbook and invite some friends with a camera for a rip-roaring laugh. If you are more mature and entrepreneurial officials in San Antonio, however, you sell that happy-crappy gas to Ameresco Inc., an energy-services company based in Massachusetts, for use as a fuel source.

San Antonio, Texas is making use of its 140,000 tons of sewage generated each year to capture methane gas. The city’s utility board of trustees approved a contract this week to sell 900,000 cubic feet of natural gas derived from the sewage each day to Ameresco, a Massachusetts energy services company.

San Antonio, Texas will be the first city in the United States to produce natural gas from the methane that comes from the poop of its residents on a large, profitable scale. Our excrement is being more technically referred to as “biosolids” by the companies and agencies involved in the project. And the project is by no means a joke.

Among the many other distinctions San Antonio residents can point to, they can now add one more: their city will boast the first utility system in the U.S. to capture and sell methane gas generated during sewage treatment.

The San Antonio Water System (SAWS) Board of Trustees last night approved what they call a “truly innovative contract” with Ameresco, an “independent energy solutions company” based in Framingham, Massachusetts. Under the 20-year lease and operating agreement, Ameresco will build the pipelines and other facilities needed to collect and distribute methane gas produced from the city’s sewage. In return, SAWS gets a 12 percent royalty on the open market methane sales.