Magnolia-Rigolets Harbor, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (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. 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.
Magnolia-Rigolets Harbor at a glance
Magnolia-Rigolets Harbor serves about 200 people through 13 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in St. Tammany Parish County, Missouri. EPA system ID: LA1103144; phone on file: 314-464-4790. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Magnolia-Rigolets Harbor's lead record
That is down 2 ppb from 4 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Magnolia-Rigolets Harbor is 4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2021 | 4 ppb |
| 2018 | 4 ppb |
Where this result ranks
Of the 1,674 Missouri systems with a lead result, the median latest reading is 1.04 ppb; 2 are over 15 ppb right now and 74 have gone over at some point. Magnolia-Rigolets Harbor's 2 ppb sits at the 70th percentile in Missouri and the 70th nationally (higher means more lead).
Other water systems in St. Tammany Parish County
25 other systems share St. Tammany Parish County; 1 of them has a higher latest lead result than Magnolia-Rigolets Harbor. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Magnolia-Eden Isles | 10,155 | 1 ppb |
| Magnolia-Greenleaves | 8,031 | 0.31 ppb |
| Magnolia-Resolve Whisperwood | 6,867 | 1 ppb |
| Magnolia-The Meadows | 4,701 | 0.92 ppb |
| Magnolia-Lakeshore Estates | 4,146 | 1 ppb |
| Magnolia-Guste Island | 2,847 | 0 (not detected) |
| Magnolia-Penn Mill Lakes | 1,152 | 0 (not detected) |
| Magnolia-Money Hills Estates | 825 | 0 (not detected) |
| Magnolia-River Park | 822 | 0 (not detected) |
| Magnolia - Brier Lake | 630 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; St. Louis, MO 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 Magnolia-Rigolets Harbor 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.