In the regulatory returns the observed 100% compliance is misleading to customers and operators. It portrays a false impression that there is no lead risk in many places. For most customers the regional compliance value provides a better measure of lead risk. However, for customer interpretation it is important to know the proportion of properties with lead service pipes. While over the 2006 to 2010 period the average likelihood of infringing the standard was only 1.1 %, the average risk of an infringement for customers with lead service pipes is nearly five times greater at 5.0%.