Iberia Water Works District 3 - Coteau, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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
Iberia Water Works District 3 - Coteau serves about 8,775 people through 2,925 service connections, which makes it a medium-sized system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Iberia Parish County, Louisiana. EPA system ID: LA1045002; phone on file: 337-367-6111. They can tell you what your service line is made of and whether they pay to replace it.
Iberia Water Works District 3 - Coteau's lead record
That is down 5 ppb from 8 ppb in the period ending 2023. The highest 90th-percentile result EPA holds for Iberia Water Works District 3 - Coteau is 8 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 3 ppb |
| 2023 | 8 ppb |
| 2020 | 3 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. Iberia Water Works District 3 - Coteau's 3 ppb sits at the 90th percentile in Louisiana and the 83rd nationally (higher means more lead).
Other water systems in Iberia Parish County
5 other systems share Iberia Parish County; 0 of them have a higher latest lead result than Iberia Water Works District 3 - Coteau. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Lawco - New Iberia Water System | 59,928 | 0 (not detected) |
| City Of Jeanerette Water System | 6,189 | 3 ppb |
| R & D Properties Mobile Home Park | 42 | 0 (not detected) |
| Badger Trail Water System | 42 | 2 ppb |
| Mjs Estates Water System | 39 | 0 (not detected) |
Your move
Test your own tap with a certified lab first-draw sample; New Iberia, 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 Iberia Water Works District 3 - Coteau 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. Systems that went over once often dip back under; here is what that means.