A liquid distillation system comprising: an input including a source pump for receiving untreated liquid; an evaporator condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product; a head chamber for collecting vapor from the evaporator condenser; a vapor compressor in communication with the head chamber for compressing the vapor; a sump in communication with the input and the evaporator condenser, wherein the evaporator condenser comprises a plurality of parallel core evaporator tubes, each evaporator tube having a first open end in communication with the sump and a second open end in communication with the head chamber; means for maintaining a constant blowdown stream to prevent scaling and other accumulation in the system; and, an output comprising an outlet for collection of condensed liquid product and a waste outlet for the blowdown stream, characterized in that: the vapor compressor is a regenerative blower; the means for maintaining a constant blowdown stream comprises a blowdown control chamber separated from the head chamber by a dam-like barrier and containing a blowdown level sensor, wherein a feedback control loop uses the level sensor, a valve and the source pump to maintain the liquid level sufficient to permit a constant flow of the blowdown stream from the blowdown control chamber to the waste outlet via a heat exchanger for exchanging heat with the untreated liquid and via the valve; and, the system further comprises means for continuously venting gas from the system. an input including a source pump for receiving untreated liquid; an evaporator condenser coupled to the input for transforming the liquid to vapor and for transforming compressed vapor into a distilled liquid product; a head chamber for collecting vapor from the evaporator condenser; a vapor compressor in communication with the head chamber for compressing the vapor; a sump in communication with the input and the evaporator condenser, wherein the evaporator condenser comprises a plurality of parallel core evaporator tubes, each evaporator tube having a first open end in communication with the sump and a second open end in communication with the head chamber; means for maintaining a constant blowdown stream to prevent scaling and other accumulation in the system; and, an output comprising an outlet for collection of condensed liquid product and a waste outlet for the blowdown stream, characterized in that: the vapor compressor is a regenerative blower; the means for maintaining a constant blowdown stream comprises a blowdown control chamber separated from the head chamber by a dam-like barrier and containing a blowdown level sensor, wherein a feedback control loop uses the level sensor, a valve and the source pump to maintain the liquid level sufficient to permit a constant flow of the blowdown stream from the blowdown control chamber to the waste outlet via a heat exchanger for exchanging heat with the untreated liquid and via the valve; and, the system further comprises means for continuously venting gas from the system. the vapor compressor is a regenerative blower; the means for maintaining a constant blowdown stream comprises a blowdown control chamber separated from the head chamber by a dam-like barrier and containing a blowdown level sensor, wherein a feedback control loop uses the level sensor, a valve and the source pump to maintain the liquid level sufficient to permit a constant flow of the blowdown stream from the blowdown control chamber to the waste outlet via a heat exchanger for exchanging heat with the untreated liquid and via the valve; and, the system further comprises means for continuously venting gas from the system.