Hardyston Twp Mua, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 1.07 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.
About Hardyston Twp Mua
Hardyston Twp Mua serves about 769 people through 289 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 groundwater, in Sussex County, New Jersey. EPA system ID: NJ1911005; phone on file: 973-823-7020. 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 up 1.07 ppb from 0 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Hardyston Twp Mua is 1.9 ppb across 15 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1.07 ppb |
| 2025 | 0 (not detected) |
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2024 | 1.5 ppb |
| 2023 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 1.9 ppb |
How Hardyston Twp 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. Hardyston Twp Mua's 1.07 ppb sits at the 52nd percentile in New Jersey and the 56th nationally (higher means more lead).
Neighbouring systems
59 other systems share Sussex County; 38 of them have a higher latest lead result than Hardyston Twp Mua. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Sparta Twp Water Utility - Lake Mohawk | 17,625 | 1.01 ppb |
| Newton Water & Sewer Utility | 8,300 | 2.75 ppb |
| Hopatcong Water Dept | 7,224 | 9.37 ppb |
| Veolia Water New Jersey Vernon Valley | 5,517 | 0 (not detected) |
| Franklin Bd Of Public Works | 5,500 | 1.09 ppb |
| Stanhope W Dept | 3,730 | 5.88 ppb |
| Hamburg Board Of Public | 3,382 | 2.01 ppb |
| Ogdensburg W Dept | 2,800 | 1.66 ppb |
| Sussex W Dept | 2,201 | 0 (not detected) |
| Montague Water Co. | 2,165 | 2 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Hardyston Twp, 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 Hardyston Twp Mua whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1360 ppb (copper action level 1,300 ppb).
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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.