The discharge and treatment of wastewater is regulated by the U.S. Environmental Protection Agency under the Clean Water Act. Through this act, the National Pollutant Discharge Elimination System (NPDES) issues permits to wastewater discharges and treatment facilities. Regulations for the NPDES include discharge limits, monitoring and reporting requirements and if necessary, special measures for harmful pollutants.


IWRC Resources
  • Technical Assistance
    • IWRC offers resources related to wastewater and the NPDES at no charge to Iowa small businesses. Our environmental specialists can answer any questions or a specialist can even visit your facility to conduct a free on-site review of your facility’s operations which include evaluating your environmental compliance status and providing waste reduction initiatives.
  • Regulatory Summaries
    • IWRC's environmental specialists have provided easy-to-understand information about wastewater in Regulatory Summaries.