Rainwater Catchment

Safe Drinking Water Act Hits 40th Anniversary Milestone


A clear glass of cold water with ice on a table.In December, the U.S. Environmental Protection Agency marked the 40th anniversary of the Safe Drinking Water Act (SDWA).

According to the EPA, “SDWA is the main federal law that ensures the quality of Americans’ drinking water. Under SDWA, EPA sets standards for drinking water quality and oversees the states, localities, and water suppliers who implement those standards.”

The act originally was passed by Congress in 1974 to guard public health by regulating the country’s public drinking water supply, including water sources like rivers, lakes, reservoirs, springs, and ground water wells. It sets national standards for drinking water to protect the public against both naturally-occurring and man-made contaminants that may occur. US EPA, states, and water systems then work together to make sure that these standards are met.

The EPA held event at the San Jose Community and Bea Main Learning Center in Coachella Valley, CA to commemorate the SDWA’s 40th anniversary.”Every day more than 38 million Californians rely on clean water for cooking, washing, and bathing,” said Jared Blumenfeld, EPA’s Regional Administrator for the Pacific Southwest. “We have made incredible progress in improving water quality and are tackling the remaining challenges so that every American will have access to clean drinking water.”

Since close to 300 million people depend on 50,000 community water systems across the country for safe, reliable water every day, it’s important that we acknowledge the importance of this Act, which protects a most vital resource to ourcitizens.

Click here to read more about SDWA’s 40th anniversary.

“Glass Of Water With Ice Cubes” courtesy of taesmileland / www.freedigitalphotos.net

Technical Information

Is Acid Rain a Concern in Rainwater Collection?


Water droplets on a glass surface with a blurred blue-green background.Why worry about acid rain? pH level is a quantitative measure of hydrogen ions with a level of 7 being neutral. Anything less than 7 is considered acidic, with anything above 7 considered alkaline. In the Pacific Northwest pH of our rainwater is typically 5.5.

Drinking acidic rainwater is not normally a health concern, however lower pH levels can cause blue/green staining in sinks and tubs, and sometimes in severe cases, may cause leaching and damage to copper plumbing. Simple pH testing strips can indicate the pH levels in collected rainwater. Generally, the smallest amount of buffering can adjust levels to a nominal 7.0 , or neutral. Adding 4 ounces of baking soda in solution to every 1,000 gallons of stored rainwater is an effective method of adjusting pH. It is recommended to start with the minimal amount, then test again and increase if necessary.

Neutralizing filters typically contain calcium carbonate, which dissolves as itinteracts with untreated water, increasing pH values to appropriate range through addition of neutralizing materials, increasing to 6.5 pH to 8.0 pH although spikes in hardness may incur. Chemical pumps can inject calcite into the water flow after filtration and are effective if placed upstream of the pressure tank or day tank.

It is advised that testing pH levels at the storage site, as well as at the tap be conducted before adjusting. Variables such as temperature and materials used in the water system itself can have effects on pH levels, so it is good to know where your baseline is. Sampling can be done by a lab for accuracy if required.

The key is to know, maintain, and service your rainwater collection system for best results.

Rain Drop Stock Photo courtesy of samuiblue / www.freedigitalphotos.net

Rainwater Catchment

Rainwater Collection is a Simple Source for Decentralized Water


Mountain peaks reflecting in a calm lake under a cloudy sky.Rainwater collection, a simple source for decentralized water, can be the answer toour aging, centralized water systems. With expected increased demand from high density development and the high cost of upgrading infrastructure to meet those demands, water will become the new commodity. Much has been discussed about privatization of water districts in order to fund these expenses, turning these districts into “for profit” businesses. Large corporations such as Nestléare actively pursuing this new business model.

What effect will privatization and profit generating water companieshave on water supplies? Will Wall Street play a part in the trading, much like oil or any other commodity? What then will happen to the average consumer? What level will supply and demand hold on the price and pricingof water?

Rainwater collection and use can play an important role in not only supply, but potentially help keep costs down for the consumer and water districts. Simple water conservation, along with collection can decrease supply and demand by supplementing centralized water. A rainwater collection system used only for toilet flushing and laundry facilities can save the average home 50% of its use. Commercial buildings can supply theirirrigation and toilet flushing needs with rainwater collection while saving thousands of cubic yards of centralized water consumption.

The supply and demand of centralized water can be mitigated with rainwater collection on a large scale by small supplementary rainwater collection systems for commercial and residential use.

Rainwater Systems