Allamuchy Twp Water & Sewer, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 2.6 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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Allamuchy Twp Water & Sewer at a glance
Allamuchy Twp Water & Sewer serves about 5,423 people through 2,187 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Warren County, New Jersey. EPA system ID: NJ2101001; phone on file: 908-303-4555. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Allamuchy Twp Water & Sewer's lead record
That is down 1.4 ppb from 4 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Allamuchy Twp Water & Sewer is 9 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.6 ppb |
| 2025 | 4 ppb |
| 2024 | 4 ppb |
| 2023 | 2 ppb |
| 2022 | 2 ppb |
| 2021 | 4 ppb |
| 2020 | 3 ppb |
| 2019 | 5 ppb |
| 2018 | 9 ppb |
| 2017 | 6 ppb |
| 2016 | 2.7 ppb |
Against other New Jersey systems
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. Allamuchy Twp Water & Sewer's 2.6 ppb sits at the 75th percentile in New Jersey and the 78th nationally (higher means more lead).
Neighbouring systems
23 other systems share Warren County; 5 of them have a higher latest lead result than Allamuchy Twp Water & Sewer. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aqua Nj - Phillipsburg | 26,686 | 0 (not detected) |
| Hackettstown Mua | 22,000 | 5 ppb |
| Nj American Water - Washington/Oxford | 10,719 | 1 ppb |
| Nj American Water - Belvidere | 2,854 | 0 (not detected) |
| Alpha Municipal Water Works | 2,530 | 12 ppb |
| Township Of Blairstown Dpw | 800 | 1.01 ppb |
| Veolia Water Nj Independence Highland | 350 | 3.84 ppb |
| Country View Village, Llc | 310 | 1.14 ppb |
| Forest Manor Retirement Home | 224 | 0 (not detected) |
| Windtryst Apts | 216 | 0.9 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Allamuchy Township, 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 Allamuchy Twp Water & Sewer 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. The action level is dropping - the 10 ppb rule from 2027.