Disinfection of water mains using ultraviolet light and oxidizing agents

A water-main disinfecting system comprising:

• a remotely-controlled carriage having a receiver, the receiver configured to receive instructions from a remote controller, wherein the remote controller is configured to send signals to the receiver and cause the remotely-controlled carriage to move axially inside of a pipe;
• a UV light source coupled to the remotely-controlled carriage and configured to emit UV light, wherein the emitted UV light irradiates contaminants located on an interior surface of the pipe and suspended within the pipe;
• and
• an oxidant supply component comprising a storage component configured to store one or more oxidizing agents, and further comprising an oxidizing agent generator configured to produce the one or more oxidizing agents, wherein the oxidizing agent generator is in communication with the storage component;
• and
• a dispensing component in communication with the storage component, the dispensing component being configured to emit the one or more oxidizing agents and to move axially inside the pipe, wherein the emitted oxidizing agents oxidize the contaminants located on the interior surface of the pipe and suspended within the pipe, and wherein the dispensing component moves axially inside the pipe independently of the remotely-controlled carriage.