Radioactive particles which can occur naturally in water or result from human activity. These rules will soon be expanded to include uranium and radon. Gross alpha includes radium-226 but excludes radon and uranium. This applies to systems serving populations greater than 100,000. Failure to sample.
Lead contamination is a major concern today, especially when small children are involved.
Sampling under this rule reflects this concern. The number of samples required is based on the system's population. Systems that exceed action levels need to do corrosion control studies, possibly provide treatment, and do additional sampling. Transient non-community systems are exempted from the Lead and Copper Rule. Indicates that a system did not meet initial lead and copper testing requirements or failed to report the results of those tests to the state.