City Of Plaquemine Water System, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 1 ppb (monitoring period 2024-2026). 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.
Who runs the water here
City Of Plaquemine Water System serves about 14,043 people through 4,681 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Iberville Parish County, Louisiana. EPA system ID: LA1047005. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2023 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for City Of Plaquemine Water System is 10 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 1 ppb |
| 2023 | 1 ppb |
| 2020 | 1 ppb |
| 2017 | 10 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. City Of Plaquemine Water System's 1 ppb sits at the 66th percentile in Louisiana and the 55th nationally (higher means more lead).
Neighbouring systems
10 other systems share Iberville Parish County; 2 of them have a higher latest lead result than City Of Plaquemine Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| 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) |
| Gillis Long Center | 600 | 0 (not detected) |
Next steps for Plaquemine, LA
Test your own tap with a certified lab first-draw sample; Plaquemine, 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 City Of Plaquemine Water System 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. Systems that went over once often dip back under; here is what that means.