Gateway Village System 7, MT
Lead detected, under the action levels
Latest 90th-percentile lead: 0.18 ppb (monitoring period 2026-2026). 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.
Gateway Village System 7 at a glance
Gateway Village System 7 serves about 77 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 Gallatin County, Montana. EPA system ID: MT0005032; phone on file: 406-995-6333. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
The highest 90th-percentile result EPA holds for Gateway Village System 7 is 0.18 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0.18 ppb |
Against other Montana systems
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. Gateway Village System 7's 0.18 ppb sits at the 39th percentile in Montana and the 41st nationally (higher means more lead).
Other water systems in Gallatin County
59 other systems share Gallatin County; 45 of them have a higher latest lead result than Gateway Village System 7. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Bozeman City Of | 56,000 | 1.6 ppb |
| Belgrade City Of | 10,460 | 1.79 ppb |
| West Yellowstone Town Of | 9,899 | 1.25 ppb |
| North Star Zoot Water | 4,323 | 3 ppb |
| River Rock County Water And Sewer Dist | 4,200 | 2.81 ppb |
| Rae Water And Sewer Dist 313 | 2,325 | 2.08 ppb |
| Three Forks City Of | 1,900 | 2 ppb |
| Manhattan Town Of | 1,800 | 2 ppb |
| Valley Grove Subdivision | 825 | 2.04 ppb |
| Landmark Subdivision | 750 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Big Sky, 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 Gateway Village System 7 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. The action level is dropping - the 10 ppb rule from 2027.