Additional requirements for the systems serving fewer than 10,000 people. In addition to complying with the requirements of Sections 16.0, 17.0, 18.0 and 20.0 of these regulations, systems using surface water or groundwater under the direct influence of surface water and serving fewer than 10,000 people must also comply with 40 CFR subpart T. Copies are available from the Office of Drinking Water.
16 Del. Admin. Code § 4462-19.0