Soft water in the context of "Cooling tower"

Mineral springs are naturally occurring springs that produce hard water, water that contains dissolved minerals. Salts, sulfur compounds, and gases are among the substances that can be dissolved in the spring water during its passage underground. In this they are unlike sweet springs, which produce soft water with no noticeable dissolved gasses. The dissolved minerals may alter the water's taste. Mineral water obtained from mineral springs, and the precipitated salts such as Epsom salt have long been important commercial products.

Some mineral springs may contain significant amounts of harmful dissolved minerals, such as arsenic, and should not be drunk. Sulfur springs smell of rotten eggs due to hydrogen sulfide (H₂S), which is hazardous and sometimes deadly. It is a gas, and it usually enters the body when it is breathed in. The quantities ingested in drinking water are much lower and are not considered likely to cause harm, but few studies on long-term, low-level exposure have been done, as of 2003.

Bradford is a city in West Yorkshire, England. It became a municipal borough in 1847, received a city charter in 1897 and, since the 1974 reform, the city status has belonged to the larger City of Bradford metropolitan borough. According to the 2021 census, the city itself had a population of 352,317, making it the second-largest subdivision of the West Yorkshire Built-up Area after Leeds, which is approximately 9 km (5.6 mi)) to the east. The wider metropolitan borough had a population of 546,976 at the same census, making it one of the most populous districts in England.

Historically part of the West Riding of Yorkshire, the city grew in the 19th century as an international centre of textile manufacture, particularly wool. It was a boomtown of the Industrial Revolution, and amongst the earliest industrialised settlements, rapidly becoming the "wool capital of the world"; this in turn gave rise to the nicknames "Woolopolis" and "Wool City". Lying in the eastern foothills of the Pennines, the area's access to supplies of coal, iron ore and soft water facilitated the growth of a manufacturing base, which, as textile manufacture grew, led to an explosion in population and was a stimulus to civic investment. There is a large amount of listed Victorian architecture in the city including the grand Italianate city hall.