Warren Water Authority, OH
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Warren Water Authority
Warren Water Authority serves about 481 people through 178 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Jefferson County, Ohio. EPA system ID: OH4102903; phone on file: 740-314-2629. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 4.8 ppb from 4.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Warren Water Authority is 7.6 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 4.8 ppb |
| 2024 | 3.1 ppb |
| 2021 | 7.6 ppb |
| 2018 | 3.1 ppb |
How Warren Water Authority 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. Warren Water Authority's reported as 0 (not detected) sits at the 17th percentile in Ohio and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
17 other systems share Jefferson County; 13 of them have a higher latest lead result than Warren Water Authority. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Steubenville, City Of | 17,000 | 7.1 ppb |
| Jefferson Co W And S District - M | 13,983 | 0.6 ppb |
| Toronto Pws | 5,676 | 0 (not detected) |
| Wintersville Village Pws | 3,924 | 0 (not detected) |
| Mingo Junction Pws | 3,350 | 1.4 ppb |
| Jefferson Co W And S District- A | 2,635 | 4.7 ppb |
| Brilliant Water And Sewer | 2,000 | 2.7 ppb |
| Tiltonsville Pws | 1,372 | 0.5 ppb |
| Yorkville Village Pws | 1,019 | 2.9 ppb |
| Jefferson Co.San.Dist.-G Pws | 990 | 1.2 ppb |
Your move
Look up your address in Warren Water Authority's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Warren 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. Why sampled homes are the worst-case ones is in the guide to reading the number. A zero today does not rule out a jump later - the rules are tightening in 2027.