Aldinger Acres Subdivision, MT
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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
Aldinger Acres Subdivision serves about 100 people through 33 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yellowstone County, Montana. EPA system ID: MT0003552; phone on file: 406-696-1423. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Aldinger Acres Subdivision's lead record
Against the period ending 2018 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Aldinger Acres Subdivision is 1 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2018 | 1 ppb |
How Aldinger Acres Subdivision compares
Of the 753 Montana systems with a lead result, the median latest reading is 1 ppb; 5 are over 15 ppb right now and 28 have gone over at some point. Aldinger Acres Subdivision's reported as 0 (not detected) sits at the 19th percentile in Montana and the 9th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Yellowstone County
45 other systems share Yellowstone County; 21 of them have a higher latest lead result than Aldinger Acres Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Billings City Of | 114,000 | 3 ppb |
| Billings Heights Co Water Dist Of | 12,000 | 3 ppb |
| Laurel Municipal Water System | 6,339 | 2 ppb |
| Lockwood Water And Sewer District | 5,900 | 3 ppb |
| Pioneer Water Service | 900 | 0 (not detected) |
| Go 2 U Water Delivery | 875 | 0 (not detected) |
| Worden Ballantine Yellowstone | 800 | 3 ppb |
| Fisher Water Service | 750 | 0 (not detected) |
| Cherry Creek Estates Llc | 600 | 0 (not detected) |
| Windsor Estates | 530 | 1 ppb |
What to do in your house
Look up your address in Aldinger 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 Aldinger 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. The lead result guide covers how utilities pick the homes they sample. A zero today does not rule out a jump later - the rules are tightening in 2027.