Pass Christian Isles, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 4 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.
About Pass Christian Isles
Pass Christian Isles serves about 399 people through 151 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Harrison County, Missouri. EPA system ID: MS0240066; phone on file: 314-736-4743. They can tell you what your service line is made of and whether they pay to replace it.
Pass Christian Isles's lead record
That is up 1.8 ppb from 2.2 ppb in the period ending 2021. The highest 90th-percentile result EPA holds for Pass Christian Isles is 4 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 4 ppb |
| 2021 | 2.2 ppb |
| 2018 | 1.7 ppb |
Against other Missouri systems
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. Pass Christian Isles's 4 ppb sits at the 88th percentile in Missouri and the 87th nationally (higher means more lead).
Nearby utilities
14 other systems share Harrison County; 2 of them have a higher latest lead result than Pass Christian Isles. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Harrison County Pwsd 2 | 3,740 | 1.34 ppb |
| Bethany Pws | 3,292 | 1.72 ppb |
| Woolmarket Village Estates | 2,910 | 1 ppb |
| Robinwood Forest Utility Inc | 1,275 | 0 (not detected) |
| Lakewood Environmental | 982 | 7 ppb |
| Harrison County Pwsd 1 | 823 | 0 (not detected) |
| Palmer Creek Utility Assc, Inc | 570 | 0.3 ppb |
| Deerwood Utilities | 404 | 0.7 ppb |
| Gilman City Pws | 380 | 0 (not detected) |
| Ridgeway Pws | 372 | 0 (not detected) |
Next steps for Des Peres, MO
Test your own tap with a certified lab first-draw sample; Des Peres, 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 Pass Christian Isles 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. The action level is dropping - the 10 ppb rule from 2027.