non-process wastewaters
The term non-process wastewaters means utility wastewaters (for example, water treatment residuals, boiler blowdown, and air pollution control wastewaters from heat recovery equipment); treated or untreated wastewaters from groundwater remediation systems; dewatering water for building foundations; and other wastewater streams not associated with a production process.
Source
40 CFR § 420.02
Scoping language
In addition to the definitions set forth in 40 CFR part 401, the following definitions apply to this part: