The system may be preferentially installed in higher income areas
Any networked system is, theoretically, vulnerable to man-in-the-middle attacks
The system itself could, over time, deposit metals and other materials into the water supply
The cost of the system is low, which allows local utility providers to acquire it for their entire network
The system will, not only, be secured with standard cybersecurity techniques used in the utility sector; but also, an attack on this system would not yield much value to an attacker
The system would have to be sealed in an enclosure such that any component that is not a sensor does not make contact with water