Seneca Mobile Homes Llc, IL
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.
Who runs the water here
Seneca Mobile Homes Llc serves about 10 people through 29 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Lasalle County, Illinois. EPA system ID: IL0995425; phone on file: 815-341-6761. They can tell you what your service line is made of and whether they pay to replace it.
Seneca Mobile Homes Llc's lead record
That is down 13.5 ppb from 13.5 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Seneca Mobile Homes Llc is 13.5 ppb across 6 monitoring periods, none of them over 15 ppb (1 over 10 ppb).
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 13.5 ppb over 10 |
| 2025 | 4.78 ppb |
| 2024 | 0 (not detected) |
| 2021 | 0 (not detected) |
| 2018 | 2.24 ppb |
Where this result ranks
Of the 1,744 Illinois systems with a lead result, the median latest reading is 0 ppb; 22 are over 15 ppb right now and 152 have gone over at some point. Seneca Mobile Homes Llc's reported as 0 (not detected) sits at the 0th percentile in Illinois and the 0th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Lasalle County
34 other systems share Lasalle County; 17 of them have a higher latest lead result than Seneca Mobile Homes Llc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Il American-Streator | 19,000 | 1 ppb |
| Ottawa | 18,097 | 0 (not detected) |
| Peru | 9,896 | 10.5 ppb |
| La Salle | 9,700 | 0 (not detected) |
| Mendota | 7,100 | 7.06 ppb |
| Marseilles | 5,061 | 0 (not detected) |
| Il American-Lake Holiday | 4,750 | 2 ppb |
| Oglesby | 4,500 | 0 (not detected) |
| Seneca | 2,353 | 0 (not detected) |
| Sheridan Correctional Center | 1,670 | 3.6 ppb |
What to do in your house
Look up your address in Seneca Mobile Homes Llc'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 Seneca Mobile Homes Llc 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. A zero today does not rule out a jump later - the rules are tightening in 2027.