Gillis Long Center, LA
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2024). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Who runs the water here
Gillis Long Center serves about 600 people through 150 service connections, which makes it a small system under EPA's size classes. It is federally owned and draws groundwater, in Iberville Parish County, Louisiana. EPA system ID: LA1047008; phone on file: 225-319-4689. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2024 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Gillis Long Center is 18 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2024 | 0 (not detected) |
| 2023 | 18 ppb over 15 |
| 2020 | 4 ppb |
| 2017 | 4 ppb |
Against other Louisiana systems
Of the 802 Louisiana systems with a lead result, the median latest reading is 0.72 ppb; 4 are over 15 ppb right now and 30 have gone over at some point. Gillis Long Center's reported as 0 (not detected) sits at the 13th percentile in Louisiana and the 23rd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
10 other systems share Iberville Parish County; 8 of them have a higher latest lead result than Gillis Long Center. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Plaquemine Water System | 14,043 | 1 ppb |
| East Iberville Water System | 6,657 | 0 (not detected) |
| Intracoastal Water System West | 6,489 | 0.41 ppb |
| Town Of Maringouin | 3,300 | 1 ppb |
| Intracoastal Water System East | 2,940 | 0.84 ppb |
| Town Of White Castle Water System | 2,550 | 2 ppb |
| North Iberville Water System | 1,524 | 0.82 ppb |
| Highway 1148 Water System | 1,086 | 0.89 ppb |
| Village Of Grosse Tete Water System | 954 | 2 ppb |
| Village Of Rosedale Water System | 664 | 0 (not detected) |
Next steps for Carville, LA
Test your own tap with a certified lab first-draw sample; Carville, LA 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 Gillis Long Center 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. Why an old exceedance still matters: over the limit before, under it now.