Delhi Rehab, NY
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
About Delhi Rehab
Delhi Rehab serves about 144 people through 1 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Delaware County, New York. EPA system ID: NY1205152; phone on file: 607-464-4444. 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 2025 (0.55 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Delhi Rehab is 24 ppb across 13 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 0.55 ppb |
| 2024 | 1.25 ppb |
| 2023 | 0 (not detected) |
| 2023 | 9 ppb |
| 2022 | 1 ppb |
| 2021 | 1.2 ppb |
| 2021 | 7.5 ppb |
| 2020 | 24 ppb over 15 |
| 2020 | 1.4 ppb |
| 2019 | 2.1 ppb |
| 2019 | 0.5 ppb |
| 2018 | 5 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. Delhi Rehab's reported as 0 (not detected) sits at the 9th percentile in New York and the 12th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
31 other systems share Delaware County; 24 of them have a higher latest lead result than Delhi Rehab. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Delhi Village | 3,833 | 8.8 ppb |
| Sidney Village | 3,800 | 0 (not detected) |
| Walton Village | 3,010 | 0.7 ppb |
| Stamford Village | 1,280 | 1.8 ppb |
| Hancock Village | 1,182 | 3 ppb |
| Hobart Village | 700 | 3 ppb |
| Margaretville Village | 650 | 1.5 ppb |
| Downsville Water District | 617 | 1.5 ppb |
| Davenport Water District | 600 | 2.4 ppb |
| Roxbury Water District | 600 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Delhi, 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 Delhi Rehab whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 3150 ppb (copper action level 1,300 ppb).
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. Why an old exceedance still matters: over the limit before, under it now.