Lead

Lead


Gallatin's drinking water sources don't contain lead. However, lead can leach into water from plumbing materials, such as lead-based solder and brass fixtures.

Reduce Your Lead Exposure


There are a few simple steps you can take in the home to reduce the risk of lead in your drinking water:
  • If water has been standing in pipes for over 6 hours, flush out the pipes by running the tap for 2 minutes. To save water, use the water you flush out for watering plants or doing dishes.
  • Always draw drinking and cooking water from cold water tap - lead dissolves more quickly in hot water.
  • Never make baby formula or other drinks or food for children from the hot water tap. Start with water taken from the cold water faucet (after flushing) and warm it if necessary.

Lead & Copper Rule


The primary source of lead and copper in drinking water is copper pipes, lead solder used to join copper pipes, lead service lines and customer's residential plumbing and fixtures. Service lines are the pipes that carry water from the water main to the customer's meter (owned by the utility) and lines that carry water from the meter to the customer's home (owned by the customer). The use of lead service lines and lead containing plumbing are typically found in older homes and historic residential areas. The use of lead service lines in public drinking water systems occurred well into the 1950s. Public water systems have some knowledge of where lead service lines have been used but the exact numbers of lines is not usually known. The Federal and State's lead and copper rule, under most circumstances, does not require removal of lead material. It requires adjustment of water chemistry and monitoring to insure metals leaching is not occurring.

The lead and copper rule establishes criteria for monitoring and treatment of public drinking water systems to protect public health. This rule establishes a treatment technique to address lead and copper levels. Instead of a maximum contaminant level, an action level is established which if exceeded requires a public water system to take actions to reduce corrosivity of water and reduce leaching of metals from plumbing into the water. The most common water treatments involve adjusting pH and alkalinity to reduce solubility and affect calcium deposition on pipes or the addition of phosphate products to provide a physical barrier between pipes and the water.

The lead and copper rule requires public water systems to collect customer tap samples from sites served by the system that are more likely to have plumbing materials containing lead. If more than 10% of tap water samples exceed the lead action level of 15 parts per billion, then water systems are required to take additional actions including:
  • Taking further steps optimize their corrosion control treatment (for water systems serving 50,000 people that have not fully optimized their corrosion control).
  • Educating the public about lead in drinking water and actions consumers can take to reduce their exposure to lead.
  • Replacing the portions of lead service lines (lines that connect distribution mains to customers) under the water system's control.

Test Your Home Drinking Water


To have your home water tested for lead, contact a certified lab near your area. The Tennessee State Department of Environment and Conservation is responsible for certifying labs in Tennessee and maintains a database where you can find labs certified to test drinking water. Analysis costs range from $25 to $50. Please contact the laboratories directly for sample collection procedures and prices. View a List of Approved Water Quality Testing Labs (PDF).