Sleeping Giant Community Inc, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (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. 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.
Who runs the water here
Sleeping Giant Community Inc serves about 50 people through 27 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Park County, Montana. EPA system ID: MT0000038. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2019 (2 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Sleeping Giant Community Inc is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1 ppb |
| 2019 | 2 ppb |
| 2016 | 1 ppb |
How Sleeping Giant Community Inc 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. Sleeping Giant Community Inc's 1 ppb sits at the 44th percentile in Montana and the 50th nationally (higher means more lead).
Other water systems in Park County
14 other systems share Park County; 7 of them have a higher latest lead result than Sleeping Giant Community Inc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Livingston City Of | 9,200 | 2 ppb |
| Gardiner Park Co Water Dist | 700 | 2 ppb |
| Clyde Park Water Dept | 300 | 2.49 ppb |
| Cooke City Water District | 300 | 2 ppb |
| Wilsall Water District | 250 | 2 ppb |
| East Gate Work Camp | 208 | 0 (not detected) |
| Golden Age Village | 180 | 1 ppb |
| Cinnabar The | 175 | 15 ppb |
| Avalon Subdivision | 135 | 0.44 ppb |
| Windmill Trailer Park Well 2 | 125 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Livingston, 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 Sleeping Giant Community Inc 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. Size matters more than most people expect: small vs large water systems.