The distribution system is made up of an extensive grid of water mains stretching approximately 6,600 miles (10,600 km).

On July 9, 1908, the first permanent police officers were appointed and assigned to the precincts in Peekskill, Garrison, Browns Station, and High Falls.

Captain McKay selected a number of qualified individuals from the civil service list with the intention of making them Aqueduct Police Sergeants.

At this time, the newly formed Aqueduct Police, a force of 350 officers (300 of these being mounted units) were tasked with ensuring order in the unruly construction site work camps.

The first Board of Water Supply Police Precinct was built in Spout Brook, approximately two miles from Peekskill, New York.

As of the present day, the DEP Police today still has the same mission guarding the water supply, and is a participant of the annual First Provisional Regiment memorial services, held at the Village of Sleepy Hollow, NY.

This Aqueduct Defense Memorial Service honors and remembers 40 soldiers who died while serving New York State during World War I. DEP Police provides an honor guard, cooperates with the NY state defense force, and local government officials to remember those perished while on aqueduct duties.

In 2006, the term of probation was extended and the BWT was included under the federal monitor's oversight following a discharge of untreated sewage into the East River after emergency generators failed to operate during the August 2003 blackout.

- 24/7 confidential employee concerns hotline - contract management plan to quicken execution of safety-related contracts - risk management program Rates conditions by priority, enabling the agency to identify and address more than 44,000 specific workplace conditions Ensures DEP follows all federal, state and local environmental, health and safety regulations by developing written policies, conducting training, and by purchasing and distributing safety equipment.

"[9] Rather than responding to future financial pressures with budget cuts that might weaken critical services, the OpX initiative makes improvements that will increase the strength of DEP.

The OpX program aims to streamline workflows, boost efficiency, and continuously identify opportunities for improvements that will allow DEP to maintain its level of customer service, safety, and productivity while minimizing rate increases for its roughly 836,000 rate-payers.