Hackettstown Mua, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 5 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.
Hackettstown Mua at a glance
Hackettstown Mua serves about 22,000 people through 5,591 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 groundwater, in Warren County, New Jersey. EPA system ID: NJ2108001; phone on file: 908-852-3622. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 4 ppb from 1 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Hackettstown Mua is 15 ppb across 17 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 5 ppb |
| 2025 | 1 ppb |
| 2024 | 3 ppb |
| 2024 | 3 ppb |
| 2023 | 4 ppb |
| 2023 | 4 ppb |
| 2022 | 5.2 ppb |
| 2022 | 5.2 ppb |
| 2021 | 3 ppb |
| 2021 | 3 ppb |
| 2020 | 2.6 ppb |
| 2020 | 2.6 ppb |
| 2019 | 3.6 ppb |
| 2019 | 3.6 ppb |
| 2018 | 4 ppb |
| 2017 | 15 ppb over 10 |
| 2016 | 6.3 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. Hackettstown Mua's 5 ppb sits at the 92nd percentile in New Jersey and the 91st nationally (higher means more lead).
Neighbouring systems
23 other systems share Warren County; 3 of them have a higher latest lead result than Hackettstown Mua. 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) |
| Nj American Water - Washington/Oxford | 10,719 | 1 ppb |
| Allamuchy Twp Water & Sewer | 5,423 | 2.6 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 |
Next steps for Hackettstown, NJ
Test your own tap with a certified lab first-draw sample; Hackettstown, 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 Hackettstown Mua 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. What a 90th-percentile result does and does not tell you: how to read a lead result. The action level is dropping - the 10 ppb rule from 2027.