Billings City Of, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 3 ppb (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Billings City Of at a glance
Billings City Of serves about 114,000 people through 33,575 service connections, which makes it a very large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws surface water, in Yellowstone County, Montana. EPA system ID: MT0000153; phone on file: 406-657-8349. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Billings City Of's lead record
That is down 2 ppb from 5 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Billings City Of is 5 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2023 | 5 ppb |
| 2020 | 0 (not detected) |
| 2017 | 5 ppb |
Where this result ranks
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. Billings City Of's 3 ppb sits at the 87th percentile in Montana and the 83rd nationally (higher means more lead).
Other water systems in Yellowstone County
45 other systems share Yellowstone County; 5 of them have a higher latest lead result than Billings City Of. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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 |
| Pryor Creek Water Assn | 475 | 1 ppb |
Next steps for Billings, MT
Test your own tap with a certified lab first-draw sample; Billings, MT may offer free or low-cost kits through the utility. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Billings City Of 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. The action level is dropping - the 10 ppb rule from 2027.