Water & Sewer Commission 4 Of St Mary, LA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2021-2023). 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.
Who runs the water here
Water & Sewer Commission 4 Of St Mary serves about 9,709 people through 3,011 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 surface water, in St. Mary Parish County, Louisiana. EPA system ID: LA1101011; phone on file: 337-923-6986. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Every lead result on file
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Water & Sewer Commission 4 Of St Mary is 2 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2020 | 0 (not detected) |
| 2017 | 2 ppb |
Where this result ranks
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. Water & Sewer Commission 4 Of St Mary'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.
Nearby utilities
11 other systems share St. Mary Parish County; 7 of them have a higher latest lead result than Water & Sewer Commission 4 Of St Mary. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| City Of Morgan City Water System | 12,703 | 0 (not detected) |
| City Of Patterson Water System | 8,456 | 0 (not detected) |
| City Of Franklin Water Supply | 8,325 | 2 ppb |
| St Mary Water & Sewer Comm #3 | 7,828 | 3.3 ppb |
| St Mary Parish W&S #2 Bayou Vista | 5,379 | 0.3 ppb |
| City Of Berwick | 5,024 | 0.7 ppb |
| St Mary Parish Water Sewerage Comm 1 | 2,823 | 0.82 ppb |
| St Mary Par Jt Water Sewer Commission 5 | 1,240 | 2 ppb |
| Port Of West St Mary | 400 | 0 (not detected) |
| Glencoe Community Water System | 190 | 4 ppb |
Next steps for Charenton, LA
Look up your address in Water & Sewer Commission 4 Of St Mary'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 Water & Sewer Commission 4 Of St Mary 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. A zero today does not rule out a jump later - the rules are tightening in 2027.