By the time the crew reaches hydrant 4,412 on their route, a middle-of-the-block unit outside a laundromat with a cap rusted nearly shut, it’s past noon and Dwayne Ferris has stopped counting how many they’ve done today. “Somewhere past twenty,” he says, which is a low estimate. The city maintains just under nine thousand hydrants, and Ferris’s four-person crew is responsible for getting to each one at least once a year, more often in neighborhoods where hydrants double, unofficially, as summer sprinklers the moment the temperature climbs past thirty.
The annual inspection is simple in description and slow in practice: open the hydrant, check that the main valve turns without excessive force, flush it to clear sediment and confirm adequate flow and pressure, check the outlet threads for damage, and repaint anything with more than light surface rust. What sounds like four steps is, on a bad hydrant, an hour of work, because a valve that’s seized from a decade of disuse has to be freed carefully, with penetrating oil and patience, not force, since forcing a seized valve stem is the single most common way a hydrant gets damaged during its own inspection.
Color matters more than most residents realize. The cap colors on a fully functional hydrant aren’t decorative, they’re a coded rating of flow capacity that firefighters read at a glance in an emergency: a system inherited from national fire protection standards that most cities, this one included, have adopted with minor local variation. Blue means the highest flow, over 1,500 gallons a minute. Red means the lowest, under 500. Ferris’s crew doesn’t just repaint for appearance, they repaint to keep that code accurate, because a hydrant that’s been rezoned to a different water main since its last coat of paint needs new caps to match, and a firefighter trusting an outdated color code at 2 a.m. is a problem nobody wants to explain afterward.
The unofficial use of hydrants for cooling is, officially, a violation that carries a fine, and, unofficially, something the crew has made a kind of peace with. “You can’t out-argue a hundred-degree day,” says Ferris. What they can do, and do several times a summer, is respond to a call about a hydrant that’s been forced open with a wrench instead of the department-issued spray cap that limits flow and lets the pressure stay adequate for the block. An illegally opened hydrant without a spray cap can drain a local water main fast enough to drop pressure for actual fire response nearby, which is the reason the fine exists at all, whatever the temperature.
Ferris has worked hydrant maintenance for six years, after nine years on general water main crews, and says the job has an odd emotional register most people wouldn’t expect: it’s the maintenance work he’s proudest of, precisely because a hydrant, unlike a pipe or a pump, is a piece of infrastructure a resident might one day watch a firefighter connect a hose to while their house is on fire. “Everything else I’ve worked on, nobody ever sees it and nobody ever will,” he says, snapping the cap back onto 4,412 and marking it clear on his tablet. “This one, if I did my job right, somebody’s never going to think about it at all. That’s the win.”