The water quality is great! But you should double check how clean is the water tank at your building. The water quality is regarding hoiw much nitrates does the water have. Here is very low (4-6) when in Europe usually is close to 40 ppm. Nitrates is a chemistry way to say stool.
I believed that fluoride is not added but it might have some in a natural way?
The water has Fluoruro(F-) mg/l <0.5. You should double check how much fluoride has the water when this is added artificially to compare both waters.
There are other places where the water is bad, gran Buenos Aires west for example. San Matín, La Matanza, etc. And Cordoba and the north of Santa Fe because it is naturally poisoned.
CABA water:
Analito Unidad Rango
Alcalinidad (CO3Ca) mg/l 45/65
Calcio(Ca++) mg/l 18 a 22
Cloruro(Cl-) mg/l 22/30
Magnesio(Mg++) mg/l 4 a 6
Sulfato(SO4--) mg/l 35/45
Sodio (Na+) mg/l 20 a 30
Nitrato(NO3-) mg/l 4 a 6
Potasio(K+) mg/l 4 a 6
Fluoruro(F-) mg/l <0.5
Dureza Total (CO3Ca) mg/l 45 /60
Nitrito (NO2-) mg/l <0.01
Fosfatos mg/l <0.5
Amonio(NH4+) mg/l <0.05
Silice soluble Si mg/l 10 a 14
Turbiedad NTU 0.5 / 2
Conductividad us/cm 200 / 400
Cloro (HclO) mg/l 0.5 / 1.5
Ph 7 y 7.6
Regards