Waterford Water Works (Purchase Troy), NY
Lead detected, under the action levels
Latest 90th-percentile lead: 3.93 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 Waterford Water Works (Purchase Troy)
Waterford Water Works (Purchase Troy) serves about 9,800 people through 3,254 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Saratoga County, New York. EPA system ID: NY4500173; phone on file: 518-237-0422. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
That is up 1.73 ppb from 2.2 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Waterford Water Works (Purchase Troy) is 14 ppb across 10 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3.93 ppb |
| 2025 | 2.2 ppb |
| 2025 | 2.6 ppb |
| 2024 | 3.7 ppb |
| 2021 | 8.72 ppb |
| 2020 | 5.2 ppb |
| 2019 | 3 ppb |
| 2018 | 6 ppb |
| 2018 | 6 ppb |
| 2017 | 14 ppb over 10 |
Against other New York systems
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. Waterford Water Works (Purchase Troy)'s 3.93 ppb sits at the 81st percentile in New York and the 87th nationally (higher means more lead).
Nearby utilities
70 other systems share Saratoga County; 6 of them have a higher latest lead result than Waterford Water Works (Purchase Troy). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Clifton Park Water Authority | 35,000 | 1 ppb |
| Saratoga Springs City | 26,525 | 3.4 ppb |
| Halfmoon Water District (Troy) | 15,000 | 2.4 ppb |
| Burnt Hills-Ballston Lk Wd | 10,000 | 2 ppb |
| Wilton Water & Sewer Authority | 9,490 | 3.96 ppb |
| Malta Water District #1 | 8,950 | 0 (not detected) |
| Moreau Wd #2 (Queensbury) | 6,600 | 3 ppb |
| Ballston Spa Village | 6,541 | 2.7 ppb |
| Mechanicville City | 5,200 | 2.52 ppb |
| Saratoga Springs City (Geyser Crest) | 4,000 | 3 ppb |
Next steps for Waterford, NY
Test your own tap with a certified lab first-draw sample; Waterford, 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 Waterford Water Works (Purchase Troy) 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.