Aim: Considering that there has been bacterial pollution in the Čabar region for many years now, the aim of this paper is to present the health safety profile of the water supplied to the above-mentioned area in the five-year period. Methods: Department of Public Health Primorsko-Goranska County provided the waterworks data gathered for the regions of Čabar, Gerovo, Prezid and Tršće. The data was statistically processed and interpreted for the period of 01.01.2013. – 31.12.2016. The sample number is 435. The parameters analyzed are temperature, colour, turbidity, pH, electrical conductivity, permanganate indeks, ammonium, coliform bacteria, Escherichia coli, enterococci, the number of culturable microorganisms at 37 ° C and at 27 ° C, Pseudomonas aeruginosa and free chlorine. Results: The highest number of bacteriologically defective samples in the five-year period was found in waterworks of Čabar with 33% defective samples and Gerovo with 29% comparing to the overall number of measurements. Furthermore, waterworks Čabar had 28% samples defected by Escherichia coli (fecal contamination indicator), followed by Gerovo (24%), Tršće (10%) and Prezid (9%). Conclusion: Because of the fecal contamination, these waterworks are hazardous for human health. This kind of contamination can cause hydrogen epidemics. Therefore, it is necessary to further invest in the protection of water sources and sanitary-technical maintenance of the water supply system with regular chlorination.