Whether or not we are a first world country could be queried.
https://watersource.awa.asn.au/community/public-health/lesso...
Also our government response to such events is usually functional, with national changes to procedures and systems to try and avoid repeating mistakes.
This bit alarmed me: “In December 2017, a government-commissioned inquiry found that 20 percent of New Zealand’s drinking water was “not demonstrably safe,” meaning at least 759,000 people could be exposed to disease-causing contaminants. It found that there were about 35,000 cases of acute gastrointestinal illness contracted via reticulated drinking water each year.”
https://i.stuff.co.nz/national/politics/99591173/state-of-ne...
https://m.scoop.co.nz/stories/GE2102/S00058/new-zealand-town...
And sometimes things really go wrong and people die. In 2000 in Ontario 6 people died and dozens were hospitalized.