One can't help but view the chlorination (again) of Napier's water as a bellwether measure.
Unsure why the bacteria levels surfaced, Napier City Council yesterday inoculated its drinking supply. It's a prudent short-term step. No one of right mind would argue the pitfalls of disinfection equal the risks of infection.
But the question is how often will the need arise to be so reactive? Killing bugs is one thing - finding the source is infinitely more complex. Just ask a still-struggling Lower Hutt.
Thorny science, fear, economics and the spectre of a hapless Havelock North repeat will ensure Napier will, probably, soon permanently deliver water with the same chemical makeup as its twin city.
But I reckon let's not settle. Indefinite chlorination is tantamount to an insidious neutering of a primary-producing province.