Abstract: A method for a water bottle comprising, coupling a cap to bottle housing such that an interior of the water bottle and the cap form a water-tight region, receiving a button push on the cap, determining with a light sensor whether visible light is present in a vicinity of a UV LED light source disposed within the cap, in response to the push of the button, initiating providing with a UV LED light source UV light to the interior in response to the push of the button and in response to absence of the visible light within the vicinity of the UV LED light source, and inhibiting providing with the UV light to the interior after a period of time after the initiating providing UV light to the interior or in response to determining the visible light being present in the vicinity of the UV LED light source.

Abstract: A storage container includes an input portion for receiving and filtering a source liquid to form an output liquid, a storage portion for storing the filtered liquid, and a base portion disposed below the storage portion including a UV light source for providing transmitted UV light to the filtered liquid, a UV light detector disposed an optical path length away from the UV light source for detecting received UV light through the filtered liquid in response to the transmitted UV light, a processor for determining an absorption or a transmission percentage in response to the transmitted UV light and the received UV light, for determining a safe condition, in response to the absorption or the transmission percentage respectively not exceeding or exceeding predetermined criteria, and one or more indicators for indicating that the liquid is safe for consumption to a user, in response to the safe condition.

Abstract: A liquid treatment device includes a base with a power source, a UV-LED module for providing UV-B or UV-C light to liquid, an LED for providing visible light, and a processor for selectively powering the UV-LED module and the LED, and having a UV transmissive material above the UV-LED module for allowing the UV-B or UV-C band light from the UV-LED module to be transmitted from the base housing, and a liquid storage housing removably coupled to the base housing with a storage portion configured to hold liquid and having a bottom portion comprising a UV transmissive material for allowing the UV-B or UV-C band light from the UV-LED module to be transmitted into the liquid, and an output coupled for restricting outflow of the liquid from the storage portion.