Old Westbury (V), NY
Lead detected, under the action levels
Latest 90th-percentile lead: 5.4 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
Old Westbury (V) serves about 4,700 people through 1,200 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 groundwater, in Nassau County, New York. EPA system ID: NY2902843; phone on file: 516-852-3922. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Old Westbury (V)'s lead record
That is up 2.3 ppb from 3.1 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Old Westbury (V) is 5.4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 5.4 ppb |
| 2020 | 3.1 ppb |
| 2017 | 3.6 ppb |
How Old Westbury (V) 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. Old Westbury (V)'s 5.4 ppb sits at the 88th percentile in New York and the 92nd nationally (higher means more lead).
Nearby utilities
39 other systems share Nassau County; 2 of them have a higher latest lead result than Old Westbury (V). If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Liberty Utilities New York - Lynbrook | 220,000 | 5 ppb |
| Liberty Utilities New York - Merrick | 135,000 | 0 (not detected) |
| Wa Of Western Nassau | 120,000 | 1.4 ppb |
| Town Of Hempstead Water Department | 110,000 | 1 ppb |
| Jericho Wd | 58,000 | 2 ppb |
| Hempstead (V) | 56,000 | 0 (not detected) |
| Hicksville Wd | 48,000 | 1 ppb |
| Freeport (V) | 45,000 | 3 ppb |
| South Farmingdale Wd | 44,700 | 1 ppb |
| Manhasset Lakeville Wd | 43,000 | 1.6 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Old Westbury, 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 Old Westbury (V) 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.