Oak Beach Public Water Supply, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 3.75 ppb (monitoring period 2025-2025). 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.
Oak Beach Public Water Supply at a glance
Oak Beach Public Water Supply serves about 66 people through 54 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Suffolk County, New York. EPA system ID: NY5130214. Ask the utility on your bill for your address in their service line inventory.
Oak Beach Public Water Supply's lead record
The highest 90th-percentile result EPA holds for Oak Beach Public Water Supply is 3.75 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3.75 ppb |
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. Oak Beach Public Water Supply's 3.75 ppb sits at the 80th percentile in New York and the 86th nationally (higher means more lead).
Neighbouring systems
25 other systems share Suffolk County; 0 of them have a higher latest lead result than Oak Beach Public Water Supply. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Suffolk County Water Authority | 1,100,000 | 1.25 ppb |
| South Huntington Water District | 81,760 | 1.3 ppb |
| Greenlawn Water District | 42,000 | 1 ppb |
| Riverhead Water District | 35,000 | 2 ppb |
| Dix Hills Water District | 34,522 | 1 ppb |
| Smithtown Water District | 19,635 | 1.2 ppb |
| Hampton Bays Water District | 12,500 | 1.3 ppb |
| Robert Moses State Park | 11,600 | 1 ppb |
| St James Water District | 10,587 | 1 ppb |
| Ocean Beach Water District | 4,500 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Lindenhurst, 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 Oak Beach Public Water Supply 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.