Wa Of Western Nassau, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 1.4 ppb (monitoring period 2022-2024). 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
Wa Of Western Nassau serves about 120,000 people through 27,875 service connections, which makes it a very large system under EPA's size classes. It is under mixed public and private ownership and draws groundwater, in Nassau County, New York. EPA system ID: NY2902830; phone on file: 516-327-4053. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2021 (2.1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Wa Of Western Nassau is 2.1 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 1.4 ppb |
| 2021 | 2.1 ppb |
| 2018 | 1.3 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. Wa Of Western Nassau's 1.4 ppb sits at the 48th percentile in New York and the 62nd nationally (higher means more lead).
Other water systems in Nassau County
39 other systems share Nassau County; 15 of them have a higher latest lead result than Wa Of Western Nassau. 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) |
| 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 |
| Massapequa Wd | 43,000 | 0 (not detected) |
Next steps for New Hyde Park, NY
Test your own tap with a certified lab first-draw sample; New Hyde Park, 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 Wa Of Western Nassau 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.