Milltown W Dept, NJ
Exceeded the action level in the past
Latest 90th-percentile lead: 7.21 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. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Milltown W Dept at a glance
Milltown W Dept serves about 7,000 people through 2,600 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 surface water, in Middlesex County, New Jersey. EPA system ID: NJ1212001. Ask the utility on your bill for your address in their service line inventory.
Every lead result on file
That is up 4.41 ppb from 2.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Milltown W Dept is 29.35 ppb across 22 monitoring periods, 6 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 7.21 ppb |
| 2025 | 2.8 ppb |
| 2025 | 3.2 ppb |
| 2024 | 4.64 ppb |
| 2024 | 5.05 ppb |
| 2023 | 6.93 ppb |
| 2023 | 5.82 ppb |
| 2022 | 3.44 ppb |
| 2022 | 6.64 ppb |
| 2021 | 12.4 ppb over 10 |
| 2021 | 17.2 ppb over 15 |
| 2020 | 19.5 ppb over 15 |
| 2020 | 21.3 ppb over 15 |
| 2019 | 29.35 ppb over 15 |
| 2019 | 12.55 ppb over 10 |
| 2018 | 15 ppb over 10 |
| 2018 | 10.22 ppb over 10 |
| 2017 | 14.85 ppb over 10 |
| 2017 | 20.9 ppb over 15 |
| 2016 | 12.57 ppb over 10 |
| 2016 | 11.99 ppb over 10 |
| 2016 | 19.59 ppb over 15 |
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. Milltown W Dept's 7.21 ppb sits at the 95th percentile in New Jersey and the 95th nationally (higher means more lead).
Other water systems in Middlesex County
13 other systems share Middlesex County; 0 of them have a higher latest lead result than Milltown W Dept. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Middlesex Water Company | 233,376 | 0.85 ppb |
| Old Bridge Mua | 68,000 | 1.75 ppb |
| New Brunswick W Dept | 55,000 | 1.78 ppb |
| Perth Amboy Water Department | 52,328 | 0 (not detected) |
| East Brunswick Water Utility | 49,715 | 0.4 ppb |
| Sayreville W Dept | 45,345 | 0.54 ppb |
| North Brunswick W Dept | 43,905 | 2.4 ppb |
| Monroe Twp Utility Department | 36,000 | 1.34 ppb |
| Edison Water Co | 35,000 | 1.18 ppb |
| South River W Dept | 16,000 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Milltown, 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 Milltown W Dept 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. Why an old exceedance still matters: over the limit before, under it now.