Castlecomb Water System, MO
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.
About Castlecomb Water System
Castlecomb Water System serves about 93 people through 31 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: TX1330163; phone on file: 254-355-9124. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
The highest 90th-percentile result EPA holds for Castlecomb Water System is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 0 (not detected) |
How Castlecomb Water System compares
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. Castlecomb Water System's reported as 0 (not detected) sits at the 7th percentile in Missouri and the 9th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Kerr County
3 other systems share Kerr County; 3 of them have a higher latest lead result than Castlecomb 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 |
| Sky Harbor Ranchettes Water System | 66 | 1.7 ppb |
Next steps for Saint Louis, MO
Look up your address in Castlecomb 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 Castlecomb 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.