Cassie Water System, MO
Exceeded the action level in the past
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2026-2026). 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.
Cassie Water System at a glance
Cassie Water System serves about 106 people through 66 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws surface water, in Burnet County, Missouri. EPA system ID: TX0270047; 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
That is down 6.8 ppb from 6.8 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Cassie Water System is 52.4 ppb across 8 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 6.8 ppb |
| 2025 | 52.4 ppb over 15 |
| 2024 | 11.7 ppb over 10 |
| 2024 | 6.26 ppb |
| 2023 | 32.7 ppb over 15 |
| 2022 | 5.4 ppb |
| 2022 | 4.7 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. Cassie Water System's reported as 0 (not detected) sits at the 9th percentile in Missouri and the 10th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Burnet County
4 other systems share Burnet County; 1 of them has a higher latest lead result than Cassie Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Council Creek Village | 333 | 0 (not detected) |
| South Silver Creek I Ii & Iii | 291 | 5.75 ppb |
| Deer Springs Water | 276 | 0 (not detected) |
| South Council Creek 2 | 111 | 0 (not detected) |
Next steps for Saint Louis, MO
Test your own tap with a certified lab first-draw sample; Saint 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 Cassie Water System whether it covers that cost before hiring anyone - many utilities now do. Its latest copper 90th percentile is 3860 ppb (copper action level 1,300 ppb).
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. Why an old exceedance still matters: over the limit before, under it now.