Trumbull Co. - Mosquito Creek Pws, OH
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. 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.
Who runs the water here
Trumbull Co. - Mosquito Creek Pws serves about 1,708 people through 668 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws surface water, in Trumbull County, Ohio. EPA system ID: OH7806403; phone on file: 330-675-7860. They can tell you what your service line is made of and whether they pay to replace it.
Trumbull Co. - Mosquito Creek Pws's lead record
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Trumbull Co. - Mosquito Creek Pws is 0 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 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. Trumbull Co. - Mosquito Creek Pws's reported as 0 (not detected) sits at the 27th percentile in Ohio and the 30th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Trumbull County
24 other systems share Trumbull County; 5 of them have a higher latest lead result than Trumbull Co. - Mosquito Creek Pws. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Warren City Pws | 49,130 | 3.7 ppb |
| Niles City Pws | 21,961 | 1.01 ppb |
| Girard City | 13,263 | 0 (not detected) |
| Trumbull Co. - Southeast Pws | 9,931 | 0 (not detected) |
| Hubbard City Pws | 8,362 | 4.3 ppb |
| Trumbull Co. - Bazetta/Champion | 8,270 | 0 (not detected) |
| Cortland City Pws | 7,105 | 0 (not detected) |
| Trumbull Co. - Howland Twp Pws | 6,396 | 0 (not detected) |
| Newton Falls City | 6,109 | 0 (not detected) |
| Mcdonald Village Pws | 4,236 | 0 (not detected) |
Next steps for Vienna, OH
Look up your address in Trumbull Co. - Mosquito Creek Pws'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 Trumbull Co. - Mosquito Creek 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. Small systems behave differently: why small systems go over more often.