Lead in Your Water?

Beginning in 2014, all piping, valves, fittings, and faucets used in drinking water systems must be lead-free that are used for water consumed by humans in the United States. What are the issues and what has already been done to protect the public? First, let’s look at the history of lead and drinking water.

History of Lead and Drinking Water

Old Lead Water Pipe

The definition of a plumber is a person who works with water pipes, once made from lead, or with lead solder for the joints. The Romans used lead pipes, and the word plumber comes from the Latin word for lead, plumbum. There is no Latin, or even Indo-European, etymology for plumbum but it bears a distant similarity to the Greek word for lead. Some historians believe the decline of the Roman Empire was as least partially caused by the abundant use of lead in piping, eating utensils, pots, pans and other uses. This is still an ongoing controversy. Lead piping was used for 2,000 plus years for drinking water distribution. Lead was used for solder to connect copper piping when copper replaced lead in pipe material primarily due to cost.

The Issue

According to the Environmental Protection Agency, “Infants and children who drink water containing lead in excess of the action level could experience delays in their physical or mental development. Children could show slight deficits in attention span and learning abilities. Adults who drink this water over many years could develop kidney problems or high blood pressure.”

What has already been done?

Prior to the 1960’s lead was often used for the water line from the city main into the home. In 1986 lead based solder for joining copper piping was banned. In 1988 all piping and fixtures were required to be lead free which required them to contain less that 8% lead content. So we have already had a significant reduction in the use of lead in our water supply system within a home. At present lead is either present in the systems of older homes or in the valves and faucets used in homes. Those valves and faucets are made of brass which is an excellent material for this use when lead in the amount of 2% is added to the copper and zinc to improve the machinability. This is the area that lead is required to be removed from the drinking water distribution system.

What is being done?

Manufactures of valves and fittings and faucets are approaching this challenge in several ways. Some are lining the water way through the valve, fitting or faucet with epoxies, plastics, stainless steel and other materials which are completely lead free. Some are building their products out of other materials such as plastic or stainless steel. Others are changing the components of the brass they are using to eliminate the lead content.

How can I reduce lead in drinking water at home?

If you have a lead water service in your home, replacement would be the very best option to reduce the chances of lead leeching into your drinking water supply. You will have valves, fittings and faucets in your home which will contain very small amounts of lead. Having your water tested would be a reasonable option.

If these are not options because of cost or other obstacles then flush your pipes before drinking, and only use cold water for consumption. The more time water has been sitting in your home’s pipes, the more lead it may contain. Anytime the water in a particular faucet has not been used for six hours or longer, “flush” your cold-water pipes by running the water until it becomes as cold as it will get. This could take as little as five to thirty seconds if there has been recent heavy water use such as showering or toilet flushing. Otherwise, it could take two minutes or longer. Your water utility will inform you if longer flushing times are needed to respond to local conditions. As lead piping ages there is often a coating of calcium carbonate which provides significant protection from lead leeching into the water.

Use only water from the cold-water tap for drinking, cooking, and especially for making baby formula. Hot water is likely to contain higher levels of lead. The two actions recommended above are very important to the health of your family. They will probably be effective in reducing lead levels because most of the lead in household water usually comes from the plumbing in your house, not from the local water supply.

In lieu of replacing the hazardous parts of a plumbing system, there are several methods of treating water to make it less corrosive, or to remove lead from water. Water filtration may be a help to treat water to make it less corrosive, including:

Calcite filters
Carbon cartridge filters
Ion exchange resin cartridge filters
Activated alumina cartridge filters

Lead removal devices are typically applied individually to faucets and are not 100% effective, but can usually remove at least 85% of lead from a water system. They may employ such methods as:

Reverse osmosis
Distillation
Carbon filters

These procedures may not be appropriate for your plumbing system; you should consult us to make sure these measures are sufficient to reduce the lead content to acceptable levels before implementing them.

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