40 CFR 141.521
§ 141.521 What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?
United States · 40 CFR — Protection of Environment · Status: effective
Cite this
- Citation
- 40 CFR 141.521, § 141.521 What updated watershed control requirements must my unfiltered system implement to continue to avoid filtration?, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/182007
- Permanent ID
ys:prov:182007@1- SHA-256
957e4859e908f9dedf1f0373b76acbc230094674c736b11e2c47cec742687b00
The hash is SHA-256 of this version's text, with every run of whitespace collapsed to a single space and the ends trimmed. The ID always leads back here, and checking it says whether the text you cited is still the current version.
Full text
Your system must take any additional steps necessary to minimize the potential for contamination by Cryptosporidium oocysts in the source water. Your system's watershed control program must, for Cryptosporidium:
(a) Identify watershed characteristics and activities which may have an adverse effect on source water quality; and
(b) Monitor the occurrence of activities which may have an adverse effect on source water quality.
Legislative history
This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.