Hidden Lake Yellowstone County W And S D, 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.
About Hidden Lake Yellowstone County W And S D
Hidden Lake Yellowstone County W And S D serves about 350 people through 113 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Yellowstone County, Montana. EPA system ID: MT0003374. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
That is down 7 ppb from 7 ppb in the period ending 2019. The highest 90th-percentile result EPA holds for Hidden Lake Yellowstone County W And S D is 7 ppb across 5 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2019 | 7 ppb |
| 2016 | 0 (not detected) |
| 2016 | 1 ppb |
| 2016 | 0 (not detected) |
How Hidden Lake Yellowstone County W And S D 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. Hidden Lake Yellowstone County W And S D's reported as 0 (not detected) sits at the 32nd percentile in Montana and the 20th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
45 other systems share Yellowstone County; 21 of them have a higher latest lead result than Hidden Lake Yellowstone County W And S D. 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 |
Your move
Look up your address in Hidden Lake Yellowstone County W And S D'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 Hidden Lake Yellowstone County W And S D 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. Small systems behave differently: why small systems go over more often.