Abstract: An apparatus for treating wastewater downstream from a drain includes an inlet for connecting to a pipe downstream from the drain. The inlet receives the wastewater. A collection chamber is in fluid connection with the inlet and is located downstream of the inlet. A pH adjustment chamber contains a pH adjustment media therein, is in fluid connection with the collection chamber and is located downstream thereof. A filter is disposed between the collection chamber and the pH adjustment chamber and an outlet is in fluid connection with the pH adjustment chamber for discharging the wastewater. The wastewater flows into the apparatus through the inlet, into the collection chamber, through the filter, into the pH adjustment chamber and out the outlet.