It's arguably the best known, least acknowledged and most inconvenient truth in local government: "Fire departments" — in the precise meaning of that label — no longer exist anywhere in America.

Thousands of official entities bear this or a similar moniker. But given what they and their employees actually do, "Emergency Medical, Incident Response and Every-Once-in-a-While-an-Actual-Fire Department" would be far more accurate.

In 1980, according to the National Fire Protection Association, the nation's 30,000 fire departments responded to 10.8 million emergency calls. About 3 million were classified as fires. By 2013, total calls had nearly tripled to 31.6 million, while fire calls had plummeted to 1.24 million, of which just 500,000 of were actual structure fires. For America's 1.14 million career and volunteer firefighters, that works out to an average of just one structure fire every other year.

In my own community of Portland, Ore., the Fire and Rescue department's 500-plus full-time fire professionals respond to more than 70,000 911 calls each year. About 70 percent are medical calls, a typical proportion for most jurisdictions. Just 700 annual calls involve burning buildings.

Let's be clear at the outset: The volunteers and career professionals in this field routinely risk their lives in service to their communities. Real and potential fires pose genuine hazards, and people skilled in fire suppression will always be needed, as will expensive, sophisticated fire equipment.

Firefighters often are very busy; one San Francisco fire engine company responds to 40 calls a day. But most calls are either medical emergencies or involve non-life-threatening requests (including false alarms) that plague fire departments everywhere.

In Portland, San Francisco and many other communities, the typical 911 call results in the dispatch of both a fire truck and an ambulance. The result is an increasingly familiar tableau: Five or six gear-laden firefighters and/or ambulance personnel arriving on the scene, regardless of whether there's a fire, stroke or heart attack in progress — or a passed-out homeless person on the sidewalk, or a motorist slightly dazed in a fender bender. (While cat-in-tree rescues are more urban myth than reality, they still happen.)

Fire officials vehemently defend their existing protocols. Firefighters, they say, need the extra time to suit up and board big rigs in case they must redeploy to a real fire during a medical call. And they note that firefighters often save lives when they arrive first on the scene.

However, such "medical saves" aren't primarily the result of firefighters' superior medical-intervention skills. They're far more a function of the fact that too few paramedics and ambulances — and still so many fire trucks and fire stations — dot our urban and suburban landscapes, as many elected officials who've unsuccessfully tried to close a fire station know.

Most firefighters, at best, have only an Emergency Medical Technical certification. Although more certified paramedics are being hired, they still comprise less than 30 percent of many cities' forces. Paramedics also cost more — a handy rationale for continuing to hire for the past, not the future — and are increasingly hard to recruit and keep amidst job requirements that they also fight the occasional fire.

While firefighters' working realities have changed profoundly in recent decades, their government structures and operating protocols remain largely frozen in bureaucratic amber. Add to this mix near-universal citizen approval, tradition and powerful unions, and incremental improvements, when they happen at all, are often contentious and add even more costs.

After Toronto decided to change protocols and deploy ambulances (from a separate department) for more than 50 types of medical calls, the Toronto Professional Fire Fighters' Association fought back with a full-scale PR campaign complete with TV ads. The message wasn't subtle: This will endanger lives. While most of the protocols remain, the City Council recently voted the Fire Department a big budget increase.

This isn't just a big-city problem. In 2013, a faculty-led research team for Portland State University's Center for Public Service (which I direct) analyzed two years of 911 calls for three small cities collectively contracting with a nearby city's fire/EMS department. Known medical calls comprised 75 percent of these incidents.

Our team identified a number of lower-cost operating alternatives, such as adding many more ambulances or specially designed Rapid Response Vehicles (RRVs) to produce faster response times. We learned of one jurisdiction that had strategically purchased a three-bedroom house in a high 911-call generating area near a nursing home for an ambulance and its crew.

Vastly increasing the number of prepositioned ambulances and adding RRVs aren't the only potential innovations. One veteran firefighter I know suggests motorcycle-riding paramedics, especially during rush-hour traffic jams, equipped with basic medical kits including heart defibrillators.

Unnecessarily high operating costs are the most visible result of clinging to an expensive, "just-in-case" delivery model for this core public service. Another is the unnecessary wear and tear on expensive fire trucks, which can easily cost $1 million or more. (Last year, 4,000 new ones were purchased across the country.)

Perhaps the biggest cost of the status quo is the least discussed. When scarce fire/emergency medical personnel are routinely dispatched for non-emergencies — and then a bona fide, "every-minute-counts" emergency does occur, especially near a now-vacated station — it's cold comfort when a 10-minute response time from a backup crew is a few minutes too slow to save a 65-year-old in sudden cardiac arrest, or a 7-year-old suffering a severe allergic reaction.

While reforms are slowly happening, the standard response by fire departments and firefighter unions to too-slow response times is still more fire stations, fire trucks and firefighters. That isn't just an unrealistic non-starter for most cash-strapped local governments, especially as America's rapidly aging population generates even more non-fire 911 calls. It's also a doubling down on a long-outdated delivery model that requires a fundamental rethinking.

This column was originally published by Governing.