Gateway Utility Company, Inc., TN
Lead detected, under the action levels
Latest 90th-percentile lead: 0.55 ppb (monitoring period 2026-2028). 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.
About Gateway Utility Company, Inc.
Gateway Utility Company, Inc. serves about 1,070 people through 374 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws surface water, in Williamson County, Tennessee. EPA system ID: TN0008271; phone on file: 615-371-6614. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Lead results over time
Against the period ending 2025 (1.12 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gateway Utility Company, Inc. is 1.23 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2028 | 0.55 ppb |
| 2025 | 1.12 ppb |
| 2022 | 0.5 ppb |
| 2019 | 1.23 ppb |
How Gateway Utility Company, Inc. compares
Of the 453 Tennessee systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 10 have gone over at some point. Gateway Utility Company, Inc.'s 0.55 ppb sits at the 15th percentile in Tennessee and the 44th nationally (higher means more lead).
Nearby utilities
6 other systems share Williamson County; 6 of them have a higher latest lead result than Gateway Utility Company, Inc.. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Franklin Water Dept | 77,222 | 1 ppb |
| H.B.& T.S. Utility District | 40,094 | 1 ppb |
| Milcrofton Utility District | 38,032 | 0.58 ppb |
| Nolensville-College Grove U.D. | 34,159 | 6.17 ppb |
| Mallory Valley U.D. | 31,703 | 1 ppb |
| Brentwood Water Department | 30,645 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Brentwood, TN 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 Utility Company, 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. The lead result guide covers how utilities pick the homes they sample. The action level is dropping - the 10 ppb rule from 2027.