National Park Water Department, NJ
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). 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
National Park Water Department serves about 3,144 people through 1,142 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Gloucester County, New Jersey. EPA system ID: NJ0812001; phone on file: 856-430-6691. Call that number and ask whether your address has a lead, galvanized or unknown service line.
National Park Water Department's lead record
Against the period ending 2020 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for National Park Water Department is 1.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 1.1 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. National Park Water Department's reported as 0 (not detected) sits at the 28th percentile in New Jersey and the 33rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Gloucester County
25 other systems share Gloucester County; 8 of them have a higher latest lead result than National Park Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Washington Township Mua | 48,000 | 0 (not detected) |
| Deptford Twp Mua | 30,561 | 0 (not detected) |
| Monroe Municipal Utilities Authority | 26,179 | 1.98 ppb |
| Glassboro Water Department | 24,244 | 0 (not detected) |
| West Deptford Twp Water Dept | 22,000 | 0 (not detected) |
| Mantua Township Mua | 12,600 | 0 (not detected) |
| Woodbury City W Dept | 10,263 | 0 (not detected) |
| East Greenwich Twp Water Dept | 9,900 | 4 ppb |
| Nj American Water - Harrison | 9,193 | 1 ppb |
| Borough Of Clayton | 8,179 | 1.17 ppb |
Your move
Look up your address in National Park Water Department'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 National Park 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. 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.