Mcwa - Geneva, NY
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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.
About Mcwa - Geneva
Mcwa - Geneva serves about 8,532 people through 4,096 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 surface water, in Ontario County, New York. EPA system ID: NY3404515; phone on file: 585-442-2001. 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 2025 (4.7 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mcwa - Geneva is 14.2 ppb across 6 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 4 ppb |
| 2025 | 4.7 ppb |
| 2024 | 14.2 ppb over 10 |
| 2024 | 5.6 ppb |
| 2023 | 7.2 ppb |
| 2021 | 3.2 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. Mcwa - Geneva's 4 ppb sits at the 82nd percentile in New York and the 88th nationally (higher means more lead).
Other water systems in Ontario County
34 other systems share Ontario County; 6 of them have a higher latest lead result than Mcwa - Geneva. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Geneva City | 13,334 | 3 ppb |
| Canandaigua-Farmington Consolidated W.D. | 13,000 | 1.3 ppb |
| Canandaigua City | 11,264 | 1.2 ppb |
| Canandaigua Town Cons. Wd | 6,800 | 1.3 ppb |
| Hopewell Cons Wd 1 | 3,781 | 1.3 ppb |
| Gorham Town Wd | 3,420 | 2.8 ppb |
| Geneva Wd #2 Csa | 2,680 | 2.1 ppb |
| Seneca Town Wd | 2,625 | 2.1 ppb |
| Victor Village | 2,443 | 5800 ppb |
| Rushville Village | 2,341 | 2.1 ppb |
Next steps for Rochester, NY
Test your own tap with a certified lab first-draw sample; Rochester, 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 Mcwa - Geneva whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 13000 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. 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.