Sky Harbor Ranchettes Water System, MO
Exceeded the action level in the past
Latest 90th-percentile lead: 1.7 ppb (monitoring period 2025-2025). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest result is under the action level, but this system has gone over 15 ppb before. Lead comes from pipes, not the source water, so a home with a lead service line can still be exposed. Test your own tap.
Sky Harbor Ranchettes Water System at a glance
Sky Harbor Ranchettes Water System serves about 66 people through 22 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Kerr County, Missouri. EPA system ID: TX1330175; phone on file: 314-380-8524. They can tell you what your service line is made of and whether they pay to replace it.
Sky Harbor Ranchettes Water System's lead record
That is down 2.1 ppb from 3.8 ppb in the period ending 2024. The highest 90th-percentile result EPA holds for Sky Harbor Ranchettes Water System is 15.9 ppb across 3 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 1.7 ppb |
| 2024 | 3.8 ppb |
| 2023 | 15.9 ppb over 15 |
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. Sky Harbor Ranchettes Water System's 1.7 ppb sits at the 65th percentile in Missouri and the 66th nationally (higher means more lead).
Other water systems in Kerr County
3 other systems share Kerr County; 0 of them have a higher latest lead result than Sky Harbor Ranchettes Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Wood Trail Water Supply | 186 | 1.3 ppb |
| Fremont Water | 183 | 1.2 ppb |
| Castlecomb Water System | 93 | 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 Sky Harbor Ranchettes 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. Why an old exceedance still matters: over the limit before, under it now.