Inline water contaminant detector and filter

An apparatus operable to receive data from a device installed on a tap, the data relating to the tap water, wherein the device comprises:

• a filter unit operable to filter water when the tap is operated;
• a chamber located below the filter unit, wherein the chamber receives a flow of fluid from the tap when the tap is operated;
• an ultraviolet LED that when the chamber is substantially full is activated to emit light to the chamber such that at least one photometric receiver measures the amount of ultraviolet light absorbed by fluid within the chamber;
• and
• a circuit configured to convert ultraviolet light absorbance from the photometric receiver to generate the data relating to the tap water;
• wherein the filter unit comprises:
• a housing that is rotatable around the axis of the tap;
• a compartment, situated in-line between the tap and the exit, enclosed by the housing, and containing a filter;
• and
• a switch rotatable around the axis to switch between covering and uncovering an opening located above and leading to the compartment, and coupled to the housing, wherein when the housing is rotated the switch is rotated, diverting water to the compartment, or to the chamber.

A device for installation onto a tap comprising:

• a housing that is rotatable around the axis of the tap;
• an exit for dispensing fluid, the exit of the device situated in-line with the tap;
• a compartment, situated in-line between the tap and the exit, enclosed by the housing, and containing a filter;
• and
• a switch rotatable around the axis to switch between covering and uncovering an opening located above and leading to the compartment, and coupled to the housing, such that when the housing is rotated the switch is rotated, diverting water to the compartment, or to the exit.