The commission recommends that a provider or user maintain a plan to carry out periodic fecal coliform sampling within certain reclaimed water distribution piping systems. Such a plan does not need the approval or review of the commission. This periodic sampling should occur in instances where residential irrigation, including landscape irrigation at individual homes occurs, or where specific urban uses such as irrigation of public parks, school yards, or athletic fields occurs. The plan should specify activities by the provider or user to respond to human health threats if undesirable fecal coliform test results or trends are detected.