Nassau (V) Pws, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 6.4 ppb (monitoring period 2021-2023). 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
Nassau (V) Pws serves about 1,250 people through 580 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 Rensselaer County, New York. EPA system ID: NY4100042; phone on file: 518-766-3044. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
That is up 3.4 ppb from 3 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Nassau (V) Pws is 6.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 6.4 ppb |
| 2020 | 3 ppb |
| 2017 | 1 ppb |
Where this result ranks
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. Nassau (V) Pws's 6.4 ppb sits at the 91st percentile in New York and the 94th nationally (higher means more lead).
Neighbouring systems
33 other systems share Rensselaer County; 3 of them have a higher latest lead result than Nassau (V) Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Troy City Pws | 51,401 | 110 ppb |
| East Greenbush General W.D. | 15,843 | 2.3 ppb |
| North Greenbush Consolidated District | 10,226 | 5 ppb |
| Rensselaer City Pws | 9,300 | 6.6 ppb |
| Brunswick Consolidated Water District | 7,050 | 1.12 ppb |
| Hoosick Falls (V) Pws | 4,925 | 1 ppb |
| Castleton Village Pws | 2,413 | 2 ppb |
| Schaghticoke Consolidated Wd #1 | 1,975 | 1 ppb |
| Schodack Consolidated Water District 101 | 1,946 | 2 ppb |
| Schaghticoke (V) Pws | 1,102 | 1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; Nassau, 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 Nassau (V) Pws 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. 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.