Jefferson Regional Water Authority, OH
Lead detected, under the action levels
Latest 90th-percentile lead: 1.7 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.
Jefferson Regional Water Authority at a glance
Jefferson Regional Water Authority serves about 4,813 people through 1,700 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 groundwater, in Montgomery County, Ohio. EPA system ID: OH5703012; phone on file: 937-866-0002. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
That is down 1.3 ppb from 3 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Jefferson Regional Water Authority is 3 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.7 ppb |
| 2024 | 3 ppb |
| 2023 | 2.2 ppb |
| 2022 | 2.3 ppb |
| 2019 | 2.1 ppb |
| 2018 | 1.8 ppb |
| 2017 | 0 (not detected) |
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. Jefferson Regional Water Authority's 1.7 ppb sits at the 71st percentile in Ohio and the 66th nationally (higher means more lead).
Neighbouring systems
21 other systems share Montgomery County; 6 of them have a higher latest lead result than Jefferson Regional Water Authority. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Montgomery County Water Services 1 Pws | 150,207 | 0 (not detected) |
| Dayton Public Water System | 141,407 | 0 (not detected) |
| Montgomery County Water Services 2 Pws | 83,033 | 0 (not detected) |
| Huber Heights Public Water System | 43,439 | 0 (not detected) |
| Miamisburg City Pws | 19,790 | 1.4 ppb |
| Englewood City Pws | 13,463 | 2.3 ppb |
| Oakwood City Pws | 9,572 | 3.6 ppb |
| Trotwood City Pws | 9,000 | 0 (not detected) |
| West Carrollton City Pws | 8,361 | 0.4 ppb |
| Union City Pws | 7,000 | 3.5 ppb |
Next steps for Miamisburg, OH
Test your own tap with a certified lab first-draw sample; Miamisburg, 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 Jefferson Regional Water Authority 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. Systems that went over once often dip back under; here is what that means.