Nj American Water - Washington/Oxford, NJ
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2024-2026). 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.
Nj American Water - Washington/Oxford at a glance
Nj American Water - Washington/Oxford serves about 10,719 people through 4,154 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in Warren County, New Jersey. EPA system ID: NJ2121001; phone on file: 908-689-1929. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2023 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Nj American Water - Washington/Oxford is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 1 ppb |
| 2020 | 2 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. Nj American Water - Washington/Oxford's 1 ppb sits at the 51st percentile in New Jersey and the 55th nationally (higher means more lead).
Other water systems in Warren County
23 other systems share Warren County; 13 of them have a higher latest lead result than Nj American Water - Washington/Oxford. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Aqua Nj - Phillipsburg | 26,686 | 0 (not detected) |
| Hackettstown Mua | 22,000 | 5 ppb |
| Allamuchy Twp Water & Sewer | 5,423 | 2.6 ppb |
| Nj American Water - Belvidere | 2,854 | 0 (not detected) |
| Alpha Municipal Water Works | 2,530 | 12 ppb |
| Township Of Blairstown Dpw | 800 | 1.01 ppb |
| Veolia Water Nj Independence Highland | 350 | 3.84 ppb |
| Country View Village, Llc | 310 | 1.14 ppb |
| Forest Manor Retirement Home | 224 | 0 (not detected) |
| Windtryst Apts | 216 | 0.9 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Cherry Hill, 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 Nj American Water - Washington/Oxford 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.