Monroe Water Systems, OH
Lead detected, under the action levels
Latest 90th-percentile lead: 1.8 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 Monroe Water Systems
Monroe Water Systems serves about 4,334 people through 1,806 service connections, which makes it a medium-sized system under EPA's size classes. It is privately owned and draws groundwater, in Monroe County, Ohio. EPA system ID: OH5600812; phone on file: 740-865-2416. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Lead results over time
Against the period ending 2024 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Monroe Water Systems is 2 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.8 ppb |
| 2024 | 2 ppb |
| 2023 | 1.4 ppb |
| 2022 | 1.6 ppb |
| 2021 | 1.5 ppb |
| 2020 | 0 (not detected) |
| 2017 | 0 (not detected) |
How Monroe Water Systems compares
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 Water Systems's 1.8 ppb sits at the 74th percentile in Ohio and the 68th nationally (higher means more lead).
Neighbouring systems
6 other systems share Monroe County; 2 of them have a higher latest lead result than Monroe Water Systems. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Woodsfield Village Pws | 2,598 | 0 (not detected) |
| Switzerland Of Ohio Water | 2,500 | 2.9 ppb |
| Switzer Water Association | 1,860 | 1.6 ppb |
| Ohio And Lee Twp Water Authority | 1,620 | 5.2 ppb |
| Clarington Village Pws | 440 | 0.9 ppb |
| Bedford Meadows | 156 | - |
What to do in your house
Test your own tap with a certified lab first-draw sample; Laings, 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 Water Systems 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.