Southeast Morris County Mua, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 1.1 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
Southeast Morris County Mua serves about 62,349 people through 17,349 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 Morris County, New Jersey. EPA system ID: NJ1424001; phone on file: 973-476-4341. 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 (1.5 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Southeast Morris County Mua is 4.4 ppb across 20 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.1 ppb |
| 2025 | 1.5 ppb |
| 2024 | 1.3 ppb |
| 2023 | 3 ppb |
| 2022 | 3.5 ppb |
| 2022 | 3.5 ppb |
| 2021 | 3.2 ppb |
| 2021 | 3.2 ppb |
| 2021 | 3.2 ppb |
| 2020 | 1.7 ppb |
| 2020 | 1.7 ppb |
| 2020 | 1.7 ppb |
| 2019 | 2.4 ppb |
| 2019 | 2.4 ppb |
| 2019 | 2.4 ppb |
| 2018 | 3.8 ppb |
| 2018 | 3.8 ppb |
| 2018 | 3.8 ppb |
| 2017 | 4.4 ppb |
| 2017 | 2.5 ppb |
How Southeast Morris County 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. Southeast Morris County Mua's 1.1 ppb sits at the 53rd percentile in New Jersey and the 58th nationally (higher means more lead).
Nearby utilities
60 other systems share Morris County; 36 of them have a higher latest lead result than Southeast Morris County Mua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Parsippany-Troy Hills Water Department | 50,400 | 4.2 ppb |
| Dover Water Commission | 27,806 | 2.78 ppb |
| Montville Twp Mua | 22,000 | 2.31 ppb |
| Denville Twp Water Dept | 15,881 | 4.31 ppb |
| Madison Water Dept | 15,820 | 2.55 ppb |
| Randolph Twp Public Works Dept | 14,820 | 3.35 ppb |
| Pequannock Twp Water Department | 14,010 | 3.56 ppb |
| Rockaway Twp Water Dept | 14,000 | 2.57 ppb |
| Nj American Water - Roxbury | 11,793 | 4 ppb |
| East Hanover Twp Water Dept | 11,393 | 1.31 ppb |
Next steps for Cedar Knolls, NJ
Test your own tap with a certified lab first-draw sample; Cedar Knolls, 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 Southeast Morris County 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. Systems that went over once often dip back under; here is what that means.