Thank you Snowyco for your well thought out and accurate answer. You saved me from posting my usual response to these questions which come up every fall when newcomers move into the area. Yes, I know we will hear from many residents who claim they drink street water right out of the yard hose and never get sick, However, there are many people here who do not have that type of immune systems; many here are elderly,or have a compromised immune system from other underlying conditions.
Also many never change their filters and UV lights. We have several
extra filters, change our UV often, have an expensive zeolite filtering sysyem and an undersink reverse osmosis system that we monitor carefully. I worked with CDC when we lived in the states when many did not survive the Crytpto Sporidium outbreak in the midwest and can attest to what happens when one is exposed to water borne diseases when their immune system is compromised. We live in Riberas where the water is tan if untreated. Our filters need to be changed every two weeks due to the solid particles in the water. In addition, years ago many prospectors mined for gold in this area utilizing arsnic which can leach into the wells for many years after it is used. If you are worried, do not forget about ice that you get in restaurants, always ask if it is filtered water. Or carry your own own bottle, or drinks made with water when eating out. Avoid salads or fresh veggies as well. Good Luck, stay well.