Highway 1148 Water System, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 0.89 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.
About Highway 1148 Water System
Highway 1148 Water System serves about 1,086 people through 362 service connections, which makes it a small 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: LA1047026. Ask the utility on your bill for your address in their service line inventory.
Lead results over time
Against the period ending 2022 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Highway 1148 Water System is 3 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0.89 ppb |
| 2022 | 1 ppb |
| 2019 | 3 ppb |
| 2016 | 1 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. Highway 1148 Water System's 0.89 ppb sits at the 52nd percentile in Louisiana and the 49th nationally (higher means more lead).
Nearby utilities
10 other systems share Iberville Parish County; 4 of them have a higher latest lead result than Highway 1148 Water System. 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 |
| 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) |
Your move
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 Highway 1148 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. Why sampled homes are the worst-case ones is in the guide to reading the number. The action level is dropping - the 10 ppb rule from 2027.