Monroe City Pws, OH
Lead detected, under the action levels
Latest 90th-percentile lead: 0.61 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.
Monroe City Pws at a glance
Monroe City Pws serves about 15,600 people through 4,536 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 surface water, in Butler County, Ohio. EPA system ID: OH0902012; phone on file: 513-500-9181. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (1.6 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monroe City Pws is 7.5 ppb across 10 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.61 ppb |
| 2025 | 1.6 ppb |
| 2024 | 0.55 ppb |
| 2023 | 1.52 ppb |
| 2022 | 1.7 ppb |
| 2021 | 1.4 ppb |
| 2020 | 1.6 ppb |
| 2019 | 7.5 ppb |
| 2017 | 5.1 ppb |
| 2016 | 0 (not detected) |
Where this result ranks
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. Monroe City Pws's 0.61 ppb sits at the 50th percentile in Ohio and the 45th nationally (higher means more lead).
Nearby utilities
11 other systems share Butler County; 9 of them have a higher latest lead result than Monroe 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 |
| Trenton City Pws | 13,012 | 2.5 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 |
What to do in your house
Test your own tap with a certified lab first-draw sample; Monroe, 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 Monroe 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. What a 90th-percentile result does and does not tell you: how to read a lead result. Systems that went over once often dip back under; here is what that means.