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Lead and Copper Program Forms
NHDES may require that a water system undertake corrosion control activities if lead and/or copper are found at specific levels. Lead and copper are metals commonly used in household plumbing. The lead and copper rule (LCR) requires community and non-transient, non-community water systems to conduct tests to determine if lead and copper are present in high levels at the consumer's tap.
Compliance with the LCR is determined by comparing the 90th percentile of results (which is a statistical calculation performed by NHDES) with the established Federal Action Level (“AL”). These calculations are found online within your public water system information page.
If a set of results does not exceed the AL of 0.015 mg/L for lead and 1.3 mg/L for copper at the 90th percentile, the system’s Master Sampling Schedule will be updated with a future schedule. If the 90th percentile exceeds the AL for either lead or copper in any round, you must stop additional sampling and we will be in contact with you with further instructions.
The LCR requires you to share the results of the lead samples with the consumers at the location where they were collected (known as Consumer Notification). The consumers need to be given information about the results, health effects, exposure routes and your contact information. You must also send a copy of the letter you delivered and certify to this office that you distributed the information in accordance with the rules. A notification letter template with all required language is provided by NHDES for your use, located on our website here:
In addition, NHDES provides multiple forms and templates below for your use.
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