Pequannock runs its own water utility. Three township wells in the north end draw from the Buried Valley Aquifer, and the township buys water from Newark's Pequannock Water Treatment Facility in West Milford, mixing the two at about a 40% ratio to bring down sodium and hardness. In high demand it also draws through interconnections at Hopper Avenue and Jefferson Street. The 2025 water quality report lists the township system's hardness at 248 ppm in 2023, at the top of the 50 to 250 ppm guideline range, against 43.9 ppm for Newark's water. Hard water is what leaves scale in a water heater, so a yearly flush is worth it here.
The wells are being upgraded. Wells 1 and 2 supply more than half the township's water, and in November 2025 the New Jersey Infrastructure Bank reported a $4.9 million loan for a facility to remove PFAS from both, with Well 1 offline until then.
Only about half the township is on the sanitary sewer. The 2020 sewer master plan counts about 2,300 properties that are not connected, and sewered homes drain to the Two Bridges Sewerage Authority plant in Lincoln Park. The same plan says stormwater gets into the sanitary system through sump pumps and roof drains, and that treating that extra water cost the township $70,000 to $485,000 a year. A sump pump should discharge outside, not into a laundry sink or floor drain. For slow or backing-up lines, drain cleaning and sewer line repair start with finding where the problem is.
The Pompton River forms the eastern edge of town, and it floods at 16 feet on the National Weather Service gauge at Pompton Plains. Hurricane Irene set the record at 25.24 feet on August 29, 2011; April 1984 reached 24.47 feet, Hurricane Floyd 21.01 feet in 1999 and the remnants of Tropical Storm Lee 20.33 feet just after Irene. An Environmental Law Institute case study says about 1,100 homes flooded in Irene, 900 with major damage. For a burst pipe, emergency pipe repair is covered by our guarantee: on site within 90 minutes of your emergency call, or $50 off.