Bayou Liberty Water Association, LA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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. The latest 90th-percentile result was reported as 0 (not detected at the lab's limit). That says the sampled homes were low, not that your home has no lead service line. Check your utility's service line inventory for your address.
About Bayou Liberty Water Association
Bayou Liberty Water Association serves about 10,791 people through 3,597 service connections, which makes it a large system under EPA's size classes. It is privately owned and draws groundwater, in St. Tammany Parish County, Louisiana. EPA system ID: LA1103005; phone on file: 985-643-1216. Call that number and ask whether your address has a lead, galvanized or unknown service line.
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 Bayou Liberty Water Association is 1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2023 | 1 ppb |
| 2020 | 0 (not detected) |
| 2017 | 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. Bayou Liberty Water Association's reported as 0 (not detected) sits at the 41st percentile in Louisiana and the 37th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
65 other systems share St. Tammany Parish County; 27 of them have a higher latest lead result than Bayou Liberty Water Association. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Slidell Water Supply | 35,547 | 0 (not detected) |
| St Tam Parish- Bedico -Faubourg-Coquille | 18,372 | 0 (not detected) |
| St Tam Parish - Briarwood Terrace | 17,536 | 2 ppb |
| City Of Covington Water Supply | 16,185 | 0 (not detected) |
| City Of Mandeville Water Supply | 13,000 | 1 ppb |
| Utilities Inc - North Park Water Supply | 11,298 | 0 (not detected) |
| St Tam Parish - Cross Gates Sd | 8,037 | 0 (not detected) |
| Lee Road Water Corporation | 7,665 | 2 ppb |
| Utilities Inc - Kingspoint Subdivision | 6,351 | 0 (not detected) |
| St Tammany Water District #2 | 5,200 | 0 (not detected) |
Your move
Look up your address in Bayou Liberty Water Association's service line inventory. If it says lead, galvanized or unknown, test your tap. If your own line is lead, replacing the private side runs about $1,200-$12,300 (EPA average about $4,700). Ask Bayou Liberty Water Association 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. Small systems behave differently: why small systems go over more often.