Delaware Township Mua, NJ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
Who runs the water here
Delaware Township Mua serves about 500 people through 173 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Hunterdon County, New Jersey. EPA system ID: NJ1007001; phone on file: 908-782-9601. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2025 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Delaware Township Mua is 2.8 ppb across 13 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 1 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2023 | 2.8 ppb |
| 2022 | 1.23 ppb |
| 2022 | 2.38 ppb |
| 2021 | 1.33 ppb |
| 2021 | 0.53 ppb |
| 2019 | 0.2 ppb |
| 2016 | 0.3 ppb |
How Delaware Township Mua compares
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. Delaware Township Mua's reported as 0 (not detected) sits at the 19th percentile in New Jersey and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
23 other systems share Hunterdon County; 13 of them have a higher latest lead result than Delaware Township Mua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Clinton Water Dept | 12,500 | 6.8 ppb |
| Flemington Water Department | 4,581 | 3.4 ppb |
| Veolia Water New Jersey Lambertville | 3,960 | 1 ppb |
| High Bridge W Dept | 3,300 | 6.7 ppb |
| Glen Gardner W Dept | 1,705 | 1.5 ppb |
| Milford W Dept | 1,453 | 2.5 ppb |
| Hampton Borough Water Depart | 1,401 | 1.5 ppb |
| Nj American Water - Frenchtown | 1,373 | 0 (not detected) |
| Edna Mahan Correctional | 940 | 3 ppb |
| Aqua Nj - Califon | 936 | 0 (not detected) |
Next steps for Sergeantsville, NJ
Look up your address in Delaware Township Mua's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Delaware Township 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.