Old Bridge Mua, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 1.75 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.
Who runs the water here
Old Bridge Mua serves about 68,000 people through 20,259 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 surface water, in Middlesex County, New Jersey. EPA system ID: NJ1209002; phone on file: 732-566-2534. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2025 (1.02 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Old Bridge Mua is 2 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.75 ppb |
| 2025 | 1.02 ppb |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 0 (not detected) |
| 2017 | 1 ppb |
| 2017 | 2 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. Old Bridge Mua's 1.75 ppb sits at the 62nd percentile in New Jersey and the 67th nationally (higher means more lead).
Neighbouring systems
13 other systems share Middlesex County; 4 of them have a higher latest lead result than Old Bridge Mua. 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 |
| 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) |
| Highland Park W Dept | 14,000 | 0.63 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Old Bridge, 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 Old Bridge 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.