Discharging wastewater from construction site dewatering to the Manatee County Sanitary Sewer System Construction Site Dewatering

Image Construction Site Dewatering

About construction dewatering discharges

During construction, workers may need to pump groundwater and/or stormwater away from a site.  This process is called dewatering.  Usually this water is clear, but sometimes it can be contaminated and therefore discharging to a surface body of water may harm water quality.  The wastewater generated from dewatering activities may be discharged to the sanitary sewer collection system only if authorized by Manatee County Utilities Department, Wastewater Compliance Division.

 

Applying for permission to discharge to the Manatee County sanitary sewer system

Image Applying for permission to discharge to the Manatee County sanitary sewer system

A Construction Dewatering Authorization to Discharge application must be completed and submitted to the Wastewater Compliance Division prior to initiating any discharge.  Refer to the Construction Dewatering Application Manual for instructions on completing the application.  Additionally, Wastewater Compliance Division staff members are available to discuss regulations and requirements.  If approved, discharge authorization will be issued to the owner of the site and as such the application must be signed by the site owner, or the authorized representative as defined by the Manatee County Sewer Use Ordinance.  The site owner may delegate signatory authority to an authorized representative by completing an Authorization of Approved Representative form and submitting it to the Wastewater Compliance Division with the application.

 

Wastewater Discharge Fees

Wastewater discharge fees as defined in the Manatee County Government Rate Resolution will apply to those who discharge wastewater generated from dewatering activities to the Manatee County sewer system.

 

Solids in Construction Site Wastewater

Wastewater entering the sanitary sewer collection system must meet the Manatee County Sewer Use Ordinance local limit for Total Suspended Solids (TSS).  Solids greater than fifteen (15) millimeters in any dimension are prohibited.  Discharge of materials such as ashes, sand, grass, and gravel is prohibited.  A company discharging solids in excess of authorized limits is liable for any damages caused by sewage backups and/or costs associated with collection system clean up and/or repairs.

 

Regardless of discharge volumes and period of discharge, dewatering dischargers are required to adhere to the Manatee County Utilities Department Wastewater Compliance Division permitting requirements and the local limits as defined in the Manatee County Sewer Use Ordinance.