Gibson Water Department, TN
Lead detected, under the action levels
Latest 90th-percentile lead: 0.65 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.
Gibson Water Department at a glance
Gibson Water Department serves about 466 people through 190 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 Gibson County, Tennessee. EPA system ID: TN0000263; phone on file: 731-787-6501. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2022 (0.07 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gibson Water Department is 0.65 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.65 ppb |
| 2022 | 0.07 ppb |
| 2019 | 0.6 ppb |
| 2016 | 0.5 ppb |
How Gibson Water Department 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. Gibson Water Department's 0.65 ppb sits at the 17th percentile in Tennessee and the 45th nationally (higher means more lead).
Neighbouring systems
12 other systems share Gibson County; 8 of them have a higher latest lead result than Gibson Water Department. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Milan Water Dept | 10,932 | 4.1 ppb |
| Humboldt Utilities-Water Dept | 9,908 | 0.9 ppb |
| Trenton Water System | 5,155 | 0.5 ppb |
| Gibson Co Muni Water Dist #4 | 3,386 | 0.7 ppb |
| Gibson Co Muni Water Dist #5 | 2,864 | 0.4 ppb |
| Dyer Water Dept | 2,783 | 1.4 ppb |
| Gibson Co Muni Water Dist #1 | 2,433 | 0.3 ppb |
| Gibson Co Muni Water Dist #3 | 1,465 | 0.7 ppb |
| Rutherford Water Works | 1,407 | 2.3 ppb |
| Bradford Water System | 1,276 | 0.3 ppb |
Next steps for Gibson, TN
Test your own tap with a certified lab first-draw sample; Gibson, 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 Gibson Water Department 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. Size matters more than most people expect: small vs large water systems.