South Desoto Water System, LA
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2022-2024). 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 South Desoto Water System
South Desoto Water System serves about 963 people through 321 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws groundwater, in De Soto Parish County, Louisiana. EPA system ID: LA1031029; phone on file: 318-773-9702. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
That is down 2 ppb from 2 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for South Desoto Water System is 2 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 0 (not detected) |
| 2021 | 2 ppb |
| 2018 | 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. South Desoto Water System's reported as 0 (not detected) sits at the 19th percentile in Louisiana and the 27th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in De Soto Parish County
8 other systems share De Soto Parish County; 6 of them have a higher latest lead result than South Desoto Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| North Desoto Water System | 7,608 | 1 ppb |
| City Of Mansfield Water System | 7,512 | 1 ppb |
| Desoto Parish Water Works District 1 | 7,173 | 2 ppb |
| Keatchie Water System | 4,446 | 1 ppb |
| Town Of Logansport Water System | 2,448 | 0.44 ppb |
| East Desoto Water System | 1,455 | 0 (not detected) |
| Rambin-Wallace Water System | 1,161 | 1.6 ppb |
| Village Of South Mansfield Water System | 933 | 0 (not detected) |
Next steps for Mansfield, LA
Look up your address in South Desoto Water System'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 South Desoto 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. 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.