Port Washington Wd, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 2 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
Port Washington Wd serves about 34,000 people through 8,575 service connections, which makes it a 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: NY2912267; phone on file: 516-767-0171. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2021 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Port Washington Wd is 5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2021 | 2 ppb |
| 2018 | 5 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. Port Washington Wd's 2 ppb sits at the 61st percentile in New York and the 73rd nationally (higher means more lead).
Neighbouring systems
39 other systems share Nassau County; 10 of them have a higher latest lead result than Port Washington Wd. 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; Port Washington, 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 Port Washington Wd 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Size matters more than most people expect: small vs large water systems.