Olympian Water Testing™

Mountainside New Jersey water supply history began with its 1895 incorporation as a borough in Union County, carved from Westfield Township, where early residents relied on private wells tapping local aquifers amid the Watchung Mountains ridge, as noted on Mountainside’s Wikipedia page. This rural setup suited the initial population of about 367 in 1900, drawing groundwater without centralized systems until suburban expansion post-1920s.

Well water systems in Mountainside persisted through early growth, with the borough’s Board of Health overseeing inspections for contamination, similar to regional practices. As the population surged to over 6,000 by 1960, the need for reliable infrastructure grew, leading to integration with regional utilities. New Jersey American Water, founded in 1886 and detailed on their official site, expanded services to include Mountainside via the Raritan System, sourcing from rivers like the Millstone and Raritan, plus aquifers such as Potomac-Raritan-Magothy.

Municipal water development in Mountainside, NJ, advanced under New Jersey American Water’s management, now serving the borough’s 7,000 residents through extensive mains, as profiled on Jersey WaterCheck. The system treats surface and groundwater for distribution, with ongoing upgrades like main replacements to address aging pipes. Regulated by the New Jersey Department of Environmental Protection, monitoring by the Environmental Working Group reveals contaminants like arsenic and PFAS above health guidelines but within legal limits, reflecting adaptations amid recent taste and odor challenges since the shift from private wells.