Jersey City Drank It First

The water in my glass this morning fell as rain over Morris County, some twenty-three miles west of my kitchen. It pooled behind a dam on the Rockaway River and came down to Jersey City by gravity, the way it has since 1904. It carries a trace of chlorine, as almost every American city’s water does now. Mine got there first, on September 26, 1908. The chlorine arrived in the middle of a lawsuit, dosed toward two hundred thousand people without a public hearing, a statute, or a permission slip of any kind. The fight that followed is the closest thing this country has to a founding trial over what a government may add to everyone’s glass. The question that trial settled is back.

Jersey City needed the new water because it had spent half a century drinking its own poison. The city pumped from the Passaic River at Belleville, downstream of Paterson’s sewers and the mills and dye works along its banks. By 1894 the New York Times was reporting that the people of Jersey City considered their drinking water the worst in the United States. It was not a sudden conclusion, the paper said. It was eight or ten years of experience. Typhoid death rates here ran above sixty per hundred thousand through the 1880s and into the 1890s. In 1900 the state health report counted forty-four typhoid deaths in Jersey City, the most of any city in New Jersey. Newark, about the same size, lost twenty-five.

The contract of February 28, 1899 was the city’s way out. Patrick H. Flynn, a Brooklyn contractor, took the job for $7,595,000 and organized the Jersey City Water Supply Company to carry it. The promise at the heart of the contract fit inside one sentence. The water delivered should be “pure and wholesome and free from pollution deleterious for drinking and domestic purposes.” The company dammed the Rockaway above Boonton and drowned a valley there into a seven-hundred-acre reservoir. The aqueduct ran twenty-three miles down to the city, and the reservoir held better than two hundred days of supply. Boonton water reached the taps on May 23, 1904. The city judged what came out of the faucet and found it wanting. Within a year, the city had sued.

The first trial ran forty days. Vice Chancellor Frederick W. Stevens of the New Jersey Chancery Court heard it, beginning February 20, 1906, and he issued his hundred-page opinion on May 1, 1908. The company had kept most of its promises, he found, and on the one that mattered it had failed: two or three times a year the water arriving in Jersey City was not pure and wholesome. His final decree came on June 4, 1908. It ordered the company to build sewers and sewage works for the towns up the watershed, or to present “other plans or devices” within ninety days and prove them before a special master. The sewers would have cost a fortune and taken years to build.

Dr. John L. Leal had been waiting inside that clause. He was the water company’s sanitary adviser. He had trained at Princeton and at Columbia’s College of Physicians and Surgeons, and he had spent years as the health officer of Paterson, fighting typhoid at its source. On June 19, 1908, he hired George Warren Fuller to build a chlorination plant at the Boonton gatehouse. Fuller had trained at MIT and in Berlin, and by wide agreement he was the finest sanitary engineer of his day. The two men had the decree’s ninety days and no blueprint, because no city had ever dosed its whole supply. They worked in secret for ninety-nine days. They poured concrete tanks and fitted feed pumps and boilers. The storeroom was sized for three carloads of chloride of lime. On September 26, 1908, with the clock about to run out, they opened the valves. The water met the bleaching powder at the intake and ran down the aqueduct toward two hundred thousand people who had not been told.

Jersey City learned about it from its newspapers. “A New Method of Purification,” read one headline that December. “Secret Experiments at the Rockaway Intake,” read another. The dose came out later in court: less than one milligram of chlorine per liter of water, about an ounce of bleaching powder in thirty tons.

The second trial had already begun. It opened September 29, 1908, three days after the valves, before Special Master William J. Magie, and it ran thirty-eight days of testimony spread over more than a year. The transcript filled some three thousand pages. The city brought the famous men of American sanitary science: William T. Sedgwick of MIT, George C. Whipple, Charles-Edward A. Winslow, Earle B. Phelps. Their answer was the city’s answer. Phelps testified that chloride of lime could not make the Rockaway’s water pure and wholesome, and that the company should be put to building the sewers and carrying the watershed’s waste below the dam. The city wanted pipes and concrete. It had no appetite for chemistry.

The cross-examination of Leal was the savage part. The city’s lawyers tried everything. They read English doctors’ reports of colic and skin irritation into the record to paint chlorine as a poison. They called the plant a cheap dodge to escape the cost of the sewers. Then they went after the man himself. He had pushed this chemical on a whole city, they suggested, and the master should see a fortune being chased. Leal shrugged. There was no fortune. He held no patent on the process and never took one out. He collected no royalty from the cities that later copied Boonton down to the last bolt. He died in 1914, six years after the valves opened, having given the method away.

Magie filed his report on May 9, 1910. “I do therefore find and report that this device is capable of rendering the water delivered to Jersey City, pure and wholesome, for the purposes for which it is intended, and is effective in removing from the water those dangerous germs which were deemed by the decree to possibly exist therein at certain times.” The city appealed. The chancellor confirmed his master, and the Court of Errors and Appeals held the line into 1911. That October, Jersey City bought the works outright for $6,992,000, chlorine plant and all.

The country had not waited for the paperwork. Little Falls, New Jersey, started chlorinating on February 4, 1909, while the master was still hearing evidence. Poughkeepsie, New York, followed on March 17, 1909, and the man behind its plan was George C. Whipple. Six months earlier, Whipple had been testifying against the method in the Jersey City case. After Magie’s report, adoption came fast. Within a few years most municipal water supplies in the United States were chlorinated. The typhoid death rate in the national registration area was 35.8 per hundred thousand in 1900. By 1920 it was 7.9. David Cutler and Grant Miller later ran the numbers for the whole country. Filtration and chlorination together, they found, accounted for nearly half the mortality decline in American cities between 1900 and 1936, and for nearly two-thirds of the fall in child deaths. By the middle of the century, typhoid had nearly vanished as an American cause of death.

The two chemicals do different work. Chlorine does its work in the pipe. It kills organisms living in the water, upstream of every body, and by the time the glass reaches a hand its target is already dead. The person who drinks is where the process ends. Fluoride works the other way around. Nothing in the water needs fixing when fluoride goes in. The water is only the vehicle, the most efficient one ever devised, for delivering a measured dose to the teeth of everyone on the system. One chemical treats the water. The other treats the drinker. An honest person can defend both. No honest person can call them the same act, or demand the same proof for each.

The Centers for Disease Control and Prevention counts community water fluoridation among the ten great public health achievements of the twentieth century, the same list that carries water treatment itself. More than two hundred million Americans drink from fluoridated systems, and the CDC credits the practice with reducing tooth decay by about a quarter. The other record is real too. In August 2024 the National Toxicology Program finished its monograph on fluoride and cognition. It found, with moderate confidence, that exposure above 1.5 milligrams per liter, more than double the American target of 0.7, is associated with lower IQ in children. On the 0.7 level itself, the program said, the data were insufficient to say. A meta-analysis in JAMA Pediatrics followed in January 2025, pooling seventy-four studies, none of them conducted in the United States. The inverse association held at lower exposures when fluoride was measured in urine. Measured in drinking water below 1.5 milligrams, it ran to zero.

Judge Edward Chen of the Northern District of California ruled on September 24, 2024. Fluoridation at the current optimal level, he found, “poses an unreasonable risk of reduced IQ in children.” He wrote with care in the same opinion: the finding “does not conclude with certainty that fluoridated water is injurious to public health.” Under the Toxic Substances Control Act, the finding forced the government to engage. “One thing the EPA cannot do, however, in the face of this Court’s finding, is to ignore that risk.” Chen did for fluoride’s critics what Magie had done for Leal. He put the authority of a court behind the proposition that the evidence now required an answer.

The statehouses moved first. Governor Spencer Cox signed Utah’s House Bill 81 on March 27, 2025, and on May 7 it became the first statewide ban on fluoride in public water. Cox, who raised his children in an unfluoridated Utah community, had compared fluoridation to being medicated by the government. The American Dental Association answered that the law showed “wanton disregard for the oral health and well-being of their constituents.” Florida followed on May 15, 2025, when Governor Ron DeSantis signed Senate Bill 700, an agriculture bill that never uses the word fluoride and bans it anyway, effective July 1. “Forcing it in the water supply is basically forced medication on people,” DeSantis said. “They don’t have a choice.” In Miami-Dade County, the commissioners had already voted over their mayor’s veto to stop fluoridating the water of more than two and a half million people. The state agriculture commissioner supplied the slogan: water should hydrate, not medicate. In April 2025 the federal health secretary, Robert F. Kennedy Jr., stood in Salt Lake City and announced that his department would tell the CDC to stop recommending fluoridation at all.

Louisiana took up the question in 2026. Senate Bill 4 began the year as a statewide ban. The dentists pushed back, the floor amendments did their work, and what survived was Act 731, signed in June 2026. It lets the customers of any water system force the question themselves, by a petition of fifteen percent of registered voters followed by a local election. No statewide ban survived. About forty percent of Louisianans live on fluoridated systems, so the fight there will run parish by parish. Similar bills wait in committee racks across the country as this is written, in states where fluoridation reaches nearly everyone, like Kentucky at 99.7 percent, and in states where it reaches almost no one, like Hawaii at 8.5.

In the chancery courtroom of 1909, the government argued that the added chemical had failed, and demanded ditches and concrete, while the company’s physician argued that the chemical worked and stood for days proving it with bacterial counts. In the statehouses of 2025 and 2026, governments argue that the added chemical harms, and the associations of dentistry and medicine stand where Leal stood, insisting that it helps. Everyone has traded places. The question on the table has not moved. How much evidence, of what kind, examined by whom, should a city need before it adds anything to everyone’s glass?

Jersey City’s answer was imperfect, and it was magnificent. Imperfect, because Leal dosed a city without asking, and the country later judged that part intolerable. The whole apparatus of drinking-water law, down to the Safe Drinking Water Act of 1974, exists so that no one does that again on his own authority. Magnificent, because the trial itself honored the only method that has ever settled such questions: sworn witnesses, hostile cross-examination, measured doses, counted bacteria, and a written finding any citizen could read. The special master asked one narrow question. Did the water, after the device, meet the contract?

The fluoride fight deserves the same discipline, and mostly it is getting slogans. Hydrate, not medicate is a bumper sticker. Wanton disregard is a press release. Neither answers the master’s questions: what the water carries, at what dose, with what measured effect, checked by whom. On those questions the record at 0.7 milligrams is honestly incomplete. A federal court has said so. Pretending the gap does not exist is its own kind of fear. A state that wants fluoride out should have to show its evidence the way Leal had to show his, in the open, under challenge, in writing. A state that keeps fluoride in should have to keep proving it, at the dose it delivers, for the children who drink it, for as long as the tap decides for everyone.

This city earned the right to draw that line. Disinfect the water, yes, with everything the record can prove, because the alternative is forty-four dead in a year and a river that is a sewer. Treat the drinker only when the evidence clears a higher bar, because consent is the price of medicine, and a city cannot opt out of its own thirst. Leal’s chlorine cleared that bar in a courtroom, under oath, against the best opposition money could buy. The same standard, aimed at whatever is in the glass, is the least a government owes the people who drink from its taps.

I fill my glass at the sink. The water comes down from Boonton the way it has for one hundred eighteen years, and it tastes of nothing. West of here the Rockaway still runs into its reservoir. The gatehouse keeps its watch above the dam. The trace of chlorine rides the pipe, killing what the river carries before the river reaches anyone. That was the bargain of 1908: the chemical watches the water so the people can forget to be afraid. Most mornings, I forget. Every few generations a new substance asks for the same trust. Jersey City drank it first. Jersey City also made it prove itself first. The rest of the country is still arguing about the second part.