40 CFR § 141.501 National Primary Drinking Water Regulations

§ 141.501 Who is subject to the requirements of subpart T?

Current through Aug 22, 2025 · Read all of Part 141

⚠ 4 pending changes to Part 141

You are subject to these requirements if your system:

(a) Is a public water system;

(b) Uses surface water or GWUDI as a source; and

(c) Serves fewer than 10,000 persons.

← § 141.500 General requirements.§ 141.502 When must my system comply with these requirements? →