For Category 2 MWRA permit holders, semi-annual wastewater sampling for the January through June sampling period must be conducted by June 30th. Reports, including pH and flow logs, are due by July 31st.
Even though the sampling results are sent directly to the MWRA by the analytical testing laboratory using the MWRA’s electronic reporting system, permit holders are responsible for reviewing the results and notifying the MWRA of any issues of non-compliance.
If the sampling results show that any regulated chemicals are detected above the discharge limits specified in the facility’s permit or the Sewer Use Regulations (360 CMR 10), the MWRA must be notified within 24 hours of becoming aware of the violation. 360 CMR 10.024 specifies the specific daily maximum discharge limitations for regulated pollutants including formaldehyde, cyanide, phenol, specific metals, and listed toxic organics for both the Metropolitan Sewerage Service Area and the Clinton Sewerage Service Area.
If a violation is identified, the […]