### Question
How does Title 40—Protection of Environment define pollution?


### Answer
Under *40 CFR § 401.11*, **pollution** is defined as:

> the man-made or man induced alteration of the chemical, physical, biological and radiological integrity of water.

#### Citation:
  - *40 CFR § 401.11*
  - Heading: **Title 40—Protection of Environment > PART 401—GENERAL PROVISIONS > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)**

