Nj American Water - Mount Holly, 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.
Nj American Water - Mount Holly at a glance
Nj American Water - Mount Holly serves about 47,427 people through 14,295 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws surface water, in Burlington County, New Jersey. EPA system ID: NJ0323001; phone on file: 856-764-4932. 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 3 ppb from 3 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Nj American Water - Mount Holly is 3 ppb across 9 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 3 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 2 ppb |
| 2021 | 0 (not detected) |
| 2020 | 2 ppb |
| 2019 | 2 ppb |
| 2018 | 2 ppb |
How Nj American Water - Mount Holly 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. Nj American Water - Mount Holly's reported as 0 (not detected) sits at the 39th percentile in New Jersey and the 40th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
45 other systems share Burlington County; 28 of them have a higher latest lead result than Nj American Water - Mount Holly. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Evesham Mua | 45,538 | 1.4 ppb |
| Mt Laurel Twp Mua | 41,743 | 1.8 ppb |
| Willingboro Mua | 35,000 | 1.5 ppb |
| Burlington Twp W Dept | 27,000 | 3.81 ppb |
| Moorestown Water Dept | 20,700 | 2 ppb |
| Maple Shade Water Department | 19,400 | 0 (not detected) |
| Medford Twp Dept Of Muni | 17,272 | 0 (not detected) |
| Bordentown Water Departm | 15,821 | 2.19 ppb |
| Jbmdl-Dix Main System | 12,765 | 0.3 ppb |
| Pemberton Twp Dept Main | 12,378 | 1.25 ppb |
Your move
Look up your address in Nj American Water - Mount Holly'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 Nj American Water - Mount Holly 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. A zero today does not rule out a jump later - the rules are tightening in 2027.