Method for monitoring water quality

1. A method for monitoring water quality in a water system, comprising:

providing a pipe for conveying water therein, a particle sensor in operative engagement with the pipe;

the particle sensor continuously counting particles within a predetermined particle size interval in the water of the pipe;

the predetermined size interval being a size interval of a microorganism;

the particle sensor triggering a taking of a sample only when a value of counted particles within the predetermined size interval reaches a predetermined level; and

performing at least one chemical or microbiological analysis of the water sample.

2. The method according to claim 1 wherein the method further comprises diverting water to a flow regulator and then to the particle sensor to count particles.

3. The method according to claim 1 wherein the method further comprises the particle sensor automatically taking the water sample when the particle count within the predetermined size interval reaches the predetermined level and storing the water sample in a refrigerator.

4. The method according to claim 1 , wherein the water sample is analyzed with respect to pH, transparency, conductivity, chlorine, color, bacteria, heavy metals, oxygen, temperature, oxidation-reduction potential (ORP), presence of microorganisms, total organic carbon (TOC) and total organic nitrogen (TON).

5. The method according to claim 1 wherein the method further comprises diverting water in a pipe directly from the water pipe into a refrigerator without passing through the particle sensor.

6. The method according to claim 1 wherein the method further comprises diverting water in a downstream pipe directly into a refrigerator without passing through a flow regulator.

7. The method according to claim 1 wherein the method further comprises sending a crisis signal to a crisis contact.

8. The method according to claim 1 wherein the method further comprises taking the sample when a particle count within the predetermined size interval has reached a peak value.

9. The method according to claim 1 , wherein the microorganism is selected from a bacterium or a parasite.

10. The method according to claim 1 wherein the predetermined size interval is within a range of 0.1 micrometer to 25 micrometers.

11. The method according to claim 1 wherein the predetermined size interval is within a range of 0.5 micrometer to 25 micrometers.

12. The method according to claim 1 wherein the predetermined size interval is within a range of 1 micrometer to 25 micrometers.

13. The method according to claim 1 wherein the particle sensor counts particles in several predetermined size intervals.

14. The method according to claim 1 wherein a size distribution of particles in the water of the pipe is determined.

15. The method according to claim 1 wherein the method further comprises the particle sensor triggering a processor to open and close valves.

16. The method according to claim 15 wherein the method further comprises the processor sending an alert signal to an operator only when the particle count within the predetermined size interval has reached the predetermined level.

17. A method for monitoring water quality in a water system, comprising:

providing a pipe for conveying water therein and a particle sensor in operative engagement with the pipe;

the particle sensor continuously counting and measuring sizes of particles in the water to continuously provide information about a size distribution of the particles, and

the particle sensor triggering a taking of a sample and performing at least one chemical or microbiological analysis of the water sample only when a value of counted particles within a predetermined size interval is reached wherein the predetermined size interval is a size interval of a microorganism.

18. The method according to claim 17 , wherein the microorganism is selected from a bacterium or a parasite.