Dialysis system including a water treatment device

1. A dialysis system comprising:

a water treatment device including a water treatment processor, the water treatment device fluidly connected to a water source and configured to provide purified water; and

a dialysis machine including a dialysis machine processor, a dialysate holding tank, and at least one dialysate mixing pump connected to a source of concentrate, the dialysis machine processor communicatively coupled to the water treatment processor for preparing dialysate using the purified water provided by the water treatment device, wherein the dialysis machine processor is configured to:

receive an indication that a batch of dialysate is needed,

transmit a first message to the water treatment processor to begin providing the purified water,

cause the at least one dialysate mixing pump to pump a concentrate from the source of concentrate for mixing with the purified water to form the dialysate for storage in the dialysate holding tank, and

after the batch of the dialysate has been stored in the dialysate holding tank, transmit a second message to the water treatment processor to stop providing the purified water.

2. The dialysis system of claim 1 , wherein the indication that the batch of the dialysate is needed includes determining that a volume of the dialysate within the dialysate holding tank is below a certain low level.

3. The dialysis system of claim 1 , wherein the dialysis machine processor is further configured to:

determine or receive an indication that the dialysate within the dialysate holding tank has reached a certain high level; and

transmit the second message after determining or receiving the indication that the dialysate within the dialysate holding tank has reached the certain high level.

4. The dialysis system of claim 1 , wherein the indication that the batch of the dialysate is needed includes a detected time of use for a dialysis treatment.

5. The dialysis system of claim 1 , wherein the first message includes an indication of a flow rate for the purified water.

6. The dialysis system of claim 5 , wherein the dialysis machine processor is further configured to:

determine a higher rate of production for the dialysate is needed; and

transmit another first message to the water treatment processor indicative of a higher, second flow rate for the purified water.

7. The dialysis system of claim 6 , wherein the dialysis machine processor is further configured to cause the at least one dialysate mixing pump to pump the concentrate from the source of concentrate at a faster rate for mixing with the purified water to form the dialysate for storage in the dialysate holding tank.

8. The dialysis system of claim 5 , wherein the flow rate for the purified water is determined by the dialysis machine processor as being proportional to dialysate fluid flow rate or dialysis fluid demand.

9. The dialysis system of claim 1 , wherein the dialysis machine further includes a user interface for receiving the indication that the batch of the dialysate is needed.

10. The dialysis system of claim 1 , wherein the dialysis machine includes at least one of a hemodialysis machine, a peritoneal dialysis machine, a hemofiltration machine, or a hemodiafiltration machine.

11. The dialysis system of claim 1 , wherein the water source includes an online water source and the purified water has a purity corresponding to an injectable quality or a sterile quality.

12. The dialysis system of claim 1 , wherein the concentrate includes dextrose or glucose concentrate.

13. A dialysis system comprising:

a water treatment device including a water treatment processor, the water treatment device fluidly connected to a water source and configured to provide purified water; and

a dialysis machine including a dialysis machine processor, a dialysate holding tank, and at least one dialysate mixing pump connected to a source of concentrate, the dialysis machine processor communicatively coupled to the water treatment processor for preparing dialysate using the purified water provided by the water treatment device, wherein the dialysis machine processor is configured to:

receive an indication that a batch of dialysate is needed,

transmit a message to the water treatment processor indicative of needed volume of purified water, and

cause the at least one dialysate mixing pump to pump a concentrate from the source of concentrate for mixing with the purified water to form the dialysate for storage in the dialysate holding tank,

wherein the water treatment processor is configured to stop providing the purified water to the dialysis machine when the needed volume of purified water has been reached.

14. The dialysis system of claim 13 , wherein the indication that the batch of the dialysate is needed includes determining that a volume of the dialysate within the dialysate holding tank is below a certain low level.

15. The dialysis system of claim 13 , wherein the indication that the batch of the dialysate is needed includes a detected time of use for a dialysis treatment.

16. The dialysis system of claim 13 , wherein the dialysis machine further includes a user interface for receiving the indication that the batch of the dialysate is needed.

17. The dialysis system of claim 13 , wherein the message includes an indication of a flow rate for the purified water, and

wherein the dialysis machine processor is further configured to:

determine a higher rate of production for the dialysate is needed; and

transmit another message to the water treatment processor indicative of a higher, second flow rate for the purified water.