Tumwater, Washington, has three related aquifer protection ordinances. Tumwater’s Wellhead Protection is designed “to develop and implement a wellhead protection program to identify risks of contamination potentially impacting city wells, and to reduce or eliminate those risks.” The ordinance identifies four wellhead capture zones at six months, one year, five years, and ten years. Various activities are prohibited within these zones, with the six month zone being more prohibitive than the ten year zone.