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Needham Lead Sampling Results
The most recent sampling round, once again, met the Lead Action Level. Results from lead and copper samples collected in July through September 2007 show that 100% of the targeted high-risk homes had lead levels below the Lead Action Level (AL) of 15 parts per billion (ppb), meeting the requirement of at least 90%. The 90% value was 6.0 ppb.In 2000, Needham began to add caustic soda to increase the pH and alkalinity of the water to make it less corrosive. Lead levels dropped significantly after this change in treatment. 

Since 2000, Needham has collected 12 rounds of lead sampling and have consistently been in compliance with the Lead and Copper Rule. Needham continues to evaluate and fine tune treatment throughout the year to ensure the highest quality of water is delivered to homes and businesses.