Water Chemistry Water is one of the most versatile of all chemicals. boiler water treatment chemicals comprises about 75% of the Earth’s surface and is an integral part of every ecosystem—we drink it, play in it, and use it in a wide variety of manufacturing processes. Water chemists study the impact of water on other elements in these systems and vice versa. Water chemists also contribute to the design and implementation of processes and policies to manage areas of impact. Hydrology is the study of the movement, distribution, and quality of water on Earth and other planets, including the hydrologic cycle, water resources and environmental watershed sustainability. A practitioner of hydrology is a hydrologist, working within the fields of earth or environmental science, physical geography, geology, or civil and environmental engineering. Chemists in this field can work as bench chemists or data review chemists and can be in government or with private sector environmental management companies. Water chemists undertake a variety of responsibilities. Their titles vary as well—some of which reflect the interplay of disciplines, as in hydrologists, hydrogeologists, and hydrobiogeochemists. Additional titles include water purification chemist, amino trimethylene phosphonic acid wastewater treatment plant chemist, surface water chemist, and groundwater chemist. Water chemists often use their specific knowledge about water for applications that affect entire ecosystems.