It was in the first week of August, 1881 when George Chaffey, a
Canadian engineer, viewed the wastes known as the Cucamonga Desert and decided
that this patch of land, if properly watered, could become productive and
profitable. George and his brother William bought the "San Antonio
lands," 6,218 acres with water rights for $60,000. This was the nucleus
of their new model colony. They subsequently expanded to the Southern
Pacific Railroad tracks on the south. On the north, they took in the
Kincaid Ranch at San Antonio Canyon, an all-important source of water.

The Ontario Colony lands were quickly surveyed and went on sale in
November, 1882. The centerpiece was Euclid Avenue, eight miles long and
two hundred feet wide, the twin "driveways" separated by a parkway
which
was seeded in grass and lined with pepper trees. George named Euclid
Avenue after the great Greek mathematician whose book Elements of
Geometry had been a favorite subject for George in school.

The primary requirement, which had to be met before the land could be
utilized, was that water had to be found and brought to the town.

 
Chaffey laid miles of cement pipe for this purpose and later the San Antonio Water Co. drove a tunnel into the head of the canyon to tap the underground
flow—then an innovation in the field. The need for electric power to lift water from deep wells led to the establishment of the Ontario Power Co.

Another innovation in the settlement of Ontario was the provision, whereby, purchasers of land automatically received shares in the water
company. This would ensure purchasers that a share of water proportional to their acreage would be piped to their land. This eliminated many
problems that faced settlers elsewhere, where land rights and water rights were kept separate.

The results of George Chaffey’s labors showed what could be achieved. All too soon, however, the Chaffey brothers went off to Australia to
attempt a repeat performance of their success as city planners here.

Charles Frankish became the guiding force during Ontario’s early years. No matter what the activity he undertook, Frankish always threw himself
into his work and was determined to do the best possible job.

In 1887, Ontario’s unique "gravity mule car" made its first run on Euclid Avenue. Charles Frankish and Godfrey Stamm established the Ontario and
San Antonio Heights R.R. Co. Engineer John Tays of Upland added the pull-out trailer that allowed the mules to coast downhill after each laborious
pull from Holt to Twenty–Fourth Street. The mule car served until 1895, when it was replaced by an electric streetcar and returned temporarily when a
flood damaged the electrical generator in the powerhouse.

On Dec 10th, 1891, Ontario was incorporated as a city of the sixth class under the California Constitution. It adopted a City Council-City Manager
form of government. The mayor was at first called the "President of the Board," and was chosen by the Council, or the Board of Trustees as it
was then called, from among their number. Subsequently, the law was changed to allow the people to elect the mayor directly.

Ontario first developed as an agricultural community, largely but not exclusively devoted to citrus. A few of the lovely Victorian "grove
houses" still survive, relics of the days when growers could pretend thatthey were living the graceful lives of the old Spanish dons—until it
came time for harvest.

Chaffey College, which was located where the Chaffey brothers put it until 1960, originally emphasized agricultural subjects to give the growers a
hand. It was there that Prof. George Weldon developed the Babcock peach, an adaptation to California’s mild winters. The college has moved to
Rancho Cucamonga now, but Chaffey High School is still on what wasoriginally a joint campus.

A reminder of the heyday of the orange groves, the Sunkist plant remains to this day. Even though the groves have gone from the West End,
Ontario is still close to the "ton-mile center" of the industry. In addition to oranges, the production of peaches, walnuts, lemons and grapes was also
important to the growth of Ontario and the adjoining city of Upland.

In 1923, Judge Archie Mitchell, Waldo Waterman, and some other airplane enthusiasts established Latimer Field. From that time on, the town
became increasingly aviation conscious. Urban growth pushed the fliers progressively east, until they took up their present location, the
Ontario International Airport. During World War II, this was a busy training center for pilots of the hot Lockheed P-38 "Lighting," Howard Hughes’
twin-boom fighter.

Since World War II, Ontario has become a much more diversified community. The mean temperature of 61 degrees and the average rainfall of 18.4"
continues to attract more residents; with an approximate population of 165,000. The city has expanded from the 0.38 square mile area
incorporated back in 1891, up to almost 50 square miles. The economy now reflects an industrial and manufacturing base. Ten thousand acres are zoned for
industrial use. With three major railroads, the San Bernardino, Pomona, and Devore Freeways (10, 60, and 15), and the Ontario International
Airport. Ontario is well provided with major transportation resources.  Its proximity to Los Angeles ensures that Ontario will continue to grow in the
years ahead.

Ontario’s official song is "Beautiful Ontario," written by Paul Coronel in 1960.

The official flower is the Charlotte Armstrong rose, developed by local nurseryman John Armstrong and named for his first wife. At
different times, Ontario has adopted as its slogan or motto each of the following:

The Model Colony; The Model City; The City That Charms; Ontario Offers Opportunity; Pulse of the Inland Empire; Stop and Grow with Ontario;
Gateway to the Inland Empire; A Balanced Community; and The Gateway to Southern California.