Sewer cap monitoring system

A fluid monitoring device comprising:

• a transmitter housing attached to an underside of a cap, the transmitter housing configured to at least partially accept a cable, the transmitter housing comprising one or more alignment features disposed on a top surface of the transmitter housing, the one or more alignment features configured to index the transmitter housing to the cap, transmitter housing comprising a snap hook release and a stem extending through a vertical axis of the transmitter housing, the stem at least partially retaining the snap hook release;
• a printed circuit board (PCB) disposed within the transmitter housing, the PCB comprising a microprocessor and a transmitter configured to wirelessly communicate with one or more peripheral devices;
• a linkage, wherein the linkage comprises a plurality of breakable units, each breakable unit comprising one or more latching features, and wherein the snap hook release is configured to capture the linkage, wherein the snap hook release interfaces with one of the one or more latching features via a latch on the snap hook release;
• a sensor assembly comprising a capacitive sensor, wherein the linkage mechanically tethers the sensor assembly to the transmitter housing, wherein the cable extends from the transmitter housing to the sensor assembly, wherein, upon determination that a capacitance reading is above a threshold capacitance reading, the microprocessor instructs the transmitter to transmit a flood signal.