Trenton City Pws, OH
Lead detected, under the action levels
Latest 90th-percentile lead: 2.5 ppb (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. 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.
Trenton City Pws at a glance
Trenton City Pws serves about 13,012 people through 4,618 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Butler County, Ohio. EPA system ID: OH0903012; phone on file: 513-988-6304. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2025 (3.1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Trenton City Pws is 9.7 ppb across 11 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.5 ppb |
| 2025 | 3.1 ppb |
| 2025 | 2.9 ppb |
| 2024 | 4.1 ppb |
| 2023 | 3.9 ppb |
| 2022 | 2.9 ppb |
| 2021 | 3.5 ppb |
| 2020 | 9.7 ppb |
| 2019 | 5.8 ppb |
| 2018 | 3.13 ppb |
| 2017 | 3.8 ppb |
Against other Ohio systems
Of the 1,079 Ohio systems with a lead result, the median latest reading is 0.7 ppb; 1 are over 15 ppb right now and 27 have gone over at some point. Trenton City Pws's 2.5 ppb sits at the 83rd percentile in Ohio and the 78th nationally (higher means more lead).
Nearby utilities
11 other systems share Butler County; 2 of them have a higher latest lead result than Trenton City Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Butler Co. Water District 2 Pws | 116,572 | 3 ppb |
| Hamilton Public Water System | 62,447 | 0 (not detected) |
| Middletown City Pws | 51,229 | 1.14 ppb |
| Fairfield City Pws | 44,907 | 0 (not detected) |
| Southwest Regional Water District | 42,856 | 1.4 ppb |
| Oxford City Pws | 24,000 | 2.4 ppb |
| Monroe City Pws | 15,600 | 0.61 ppb |
| New Miami Village Pws | 3,200 | 1.1 ppb |
| Catalina Mobile Home Park | 1,280 | 0.7 ppb |
| Seven Mile Village Pws | 1,000 | 1.9 ppb |
Next steps for Trenton, OH
Test your own tap with a certified lab first-draw sample; Trenton, OH 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 Trenton City Pws 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. The action level is dropping - the 10 ppb rule from 2027.