Built roughly parallel to the Old Croton Aqueduct, the New Croton Aqueduct was constructed to provide a large steady supply of water for New York City. The Croton Aqueduct or Old Croton Aqueduct was a large and complex water distribution system constructed for New York City between 1837 and 1842 The City of New York The aqueduct runs from the New Croton Reservoir in Westchester County to the Jerome Park Reservoir in The Bronx, from which it distributes water to certain areas of the Bronx and Manhattan before emptying into Tunnel 1 of the Catskill/Delaware System. The New Croton Reservoir is a narrow reservoir in Westchester County New York, lying approximately 22 miles (35 Westchester County is a primarily Suburban county located in the U The Jerome Park Reservoir is located in the North Bronx, New York City. Due to numerous water quality issues, a filtration plant is being constructed within Van Cortlandt Park to improve the quality of water. Van Cortlandt Park is a 1146 acre (46 km² park located in the Bronx in New York City. Because of these quality problems, the Croton system is often bypassed or mixed with water from the Delaware and Catskill systems.