Princetown Water Supply, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 3.35 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 Princetown Water Supply
Princetown Water Supply serves about 900 people through 332 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 Schenectady County, New York. EPA system ID: NY4600093; phone on file: 518-669-7509. 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 (4.3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Princetown Water Supply is 6.1 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.35 ppb |
| 2025 | 4.3 ppb |
| 2025 | 2.8 ppb |
| 2024 | 4 ppb |
| 2024 | 5.3 ppb |
| 2023 | 6.1 ppb |
| 2023 | 4.7 ppb |
| 2022 | 5 ppb |
| 2019 | 2 ppb |
| 2016 | 1 ppb |
How Princetown Water Supply compares
Of the 2,077 New York systems with a lead result, the median latest reading is 1.5 ppb; 17 are over 15 ppb right now and 165 have gone over at some point. Princetown Water Supply's 3.35 ppb sits at the 77th percentile in New York and the 84th nationally (higher means more lead).
Neighbouring systems
10 other systems share Schenectady County; 3 of them have a higher latest lead result than Princetown Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Schenectady City Water Works | 62,000 | 3 ppb |
| Rotterdam Wd #5 | 28,000 | 0.83 ppb |
| Niskayuna Consolidated Wd #11 | 22,287 | 3 ppb |
| Glenville Wd #11 | 15,000 | 4.1 ppb |
| Scotia Village Water Works | 12,800 | 6.46 ppb |
| Rotterdam Wd #3 | 1,900 | 2 ppb |
| Delanson Village Water Works | 380 | 3 ppb |
| West Hill Water Company Inc. | 180 | 1 ppb |
| Hillcrest Commons- Frt Section | 64 | 4.5 ppb |
| Hillcrest Commons-Rear Section | 42 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Princetown, NY 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 Princetown Water Supply whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 1510 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.