Pequannock Twp Water Department, NJ
Exceeded the action level in the past
Latest 90th-percentile lead: 3.56 ppb (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Pequannock Twp Water Department serves about 14,010 people through 4,608 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Morris County, New Jersey. EPA system ID: NJ1431001; phone on file: 973-261-3712. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
That is down 1.53 ppb from 5.09 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Pequannock Twp Water Department is 28 ppb across 17 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.56 ppb |
| 2025 | 5.09 ppb |
| 2025 | 4.64 ppb |
| 2024 | 3.6 ppb |
| 2024 | 3.52 ppb |
| 2023 | 3.56 ppb |
| 2023 | 8.71 ppb |
| 2022 | 4.76 ppb |
| 2022 | 4.56 ppb |
| 2021 | 5.82 ppb |
| 2021 | 4.65 ppb |
| 2020 | 5.62 ppb |
| 2020 | 5 ppb |
| 2019 | 5 ppb |
| 2019 | 0 (not detected) |
| 2019 | 28 ppb over 15 |
| 2016 | 3 ppb |
Where this result ranks
Of the 605 New Jersey systems with a lead result, the median latest reading is 1 ppb; 5 are over 15 ppb right now and 52 have gone over at some point. Pequannock Twp Water Department's 3.56 ppb sits at the 83rd percentile in New Jersey and the 85th nationally (higher means more lead).
Nearby utilities
60 other systems share Morris County; 16 of them have a higher latest lead result than Pequannock Twp Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Southeast Morris County Mua | 62,349 | 1.1 ppb |
| Parsippany-Troy Hills Water Department | 50,400 | 4.2 ppb |
| Dover Water Commission | 27,806 | 2.78 ppb |
| Montville Twp Mua | 22,000 | 2.31 ppb |
| Denville Twp Water Dept | 15,881 | 4.31 ppb |
| Madison Water Dept | 15,820 | 2.55 ppb |
| Randolph Twp Public Works Dept | 14,820 | 3.35 ppb |
| Rockaway Twp Water Dept | 14,000 | 2.57 ppb |
| Nj American Water - Roxbury | 11,793 | 4 ppb |
| East Hanover Twp Water Dept | 11,393 | 1.31 ppb |
Next steps for Pompton Plains, NJ
Test your own tap with a certified lab first-draw sample; Pompton Plains, NJ may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Pequannock Twp Water Department whether it covers that cost before hiring anyone - many utilities now do.
These figures describe homes the utility sampled, not your tap. Only your service line record or a test of your own water answers the question for your house. Why sampled homes are the worst-case ones is in the guide to reading the number. Why an old exceedance still matters: over the limit before, under it now.