Bayou Teche Water Works, LA
Lead detected, under the action levels
Latest 90th-percentile lead: 3 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.
Bayou Teche Water Works at a glance
Bayou Teche Water Works serves about 10,137 people through 3,379 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in St. Martin Parish County, Louisiana. EPA system ID: LA1099002; phone on file: 337-319-6237. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Bayou Teche Water Works's lead record
Against the period ending 2022 (4 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Bayou Teche Water Works is 4 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 3 ppb |
| 2022 | 4 ppb |
| 2019 | 1 ppb |
| 2016 | 3 ppb |
How Bayou Teche Water Works compares
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. Bayou Teche Water Works's 3 ppb sits at the 90th percentile in Louisiana and the 83rd nationally (higher means more lead).
Neighbouring systems
13 other systems share St. Martin Parish County; 3 of them have a higher latest lead result than Bayou Teche Water Works. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Village Of Parks Water System | 12,801 | 0 (not detected) |
| Cecilia Water Corporation | 12,420 | 3 ppb |
| City Of Breaux Bridge Water System | 10,098 | 0 (not detected) |
| City Of St. Martinville Water System | 7,263 | 7 ppb |
| Henderson Nina Water System Inc | 6,010 | 4.6 ppb |
| United Water System | 4,446 | 2 ppb |
| Town Of Arnaudville Water System | 3,957 | 0 (not detected) |
| St Martin Water Works District 3 - Cade | 3,249 | 0 (not detected) |
| St Martin Water District 4 - Catahoula | 3,000 | 1 ppb |
| St Martin Water And Sewer Commission 1 | 2,262 | 1 ppb |
What to do in your house
Test your own tap with a certified lab first-draw sample; Loreauville, 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 Bayou Teche Water Works 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. The action level is dropping - the 10 ppb rule from 2027.