Big Country Acres Subdivision, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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.
About Big Country Acres Subdivision
Big Country Acres Subdivision serves about 90 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 St. Charles County, Missouri. EPA system ID: MO6030662; phone on file: 314-302-3937. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Big Country Acres Subdivision's lead record
That is down 4.48 ppb from 4.48 ppb in the period ending 2022. The highest 90th-percentile result EPA holds for Big Country Acres Subdivision is 4.48 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 4.48 ppb |
| 2022 | 4.48 ppb |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0.73 ppb |
How Big Country Acres Subdivision compares
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Big Country Acres Subdivision's reported as 0 (not detected) sits at the 7th percentile in Missouri and the 8th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
17 other systems share St. Charles County; 8 of them have a higher latest lead result than Big Country Acres Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| St Charles County Pwsd 2 | 100,587 | 2.28 ppb |
| St Charles Pws | 78,961 | 0 (not detected) |
| St Peters Pws | 52,575 | 0 (not detected) |
| Wentzville Pws | 41,784 | 4.77 ppb |
| Ofallon Pws | 32,515 | 1.48 ppb |
| St Paul Pws | 1,700 | 0 (not detected) |
| St Charles Co Pwsd 2 Augusta | 881 | 1.47 ppb |
| St Charles Pwsd 2 Foristell | 550 | 2.32 ppb |
| Mo American Jaxson | 535 | 0 (not detected) |
| Ecm Water & Sewer Authority - Flint Hill | 469 | 0 (not detected) |
Your move
Look up your address in Big Country Acres Subdivision'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 Big Country Acres Subdivision 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.