Tri County Point Water System 4, 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.
Who runs the water here
Tri County Point Water System 4 serves about 456 people through 152 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Jackson County, Missouri. EPA system ID: TX1200029; 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 128 ppb from 128 ppb in the period ending 2025. The highest 90th-percentile result EPA holds for Tri County Point Water System 4 is 128 ppb across 5 monitoring periods, 1 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2025 | 128 ppb over 15 |
| 2022 | 1.9 ppb |
| 2019 | 5 ppb |
| 2018 | 0 (not detected) |
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. Tri County Point Water System 4's reported as 0 (not detected) sits at the 23rd percentile in Missouri and the 22nd nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Other water systems in Jackson County
27 other systems share Jackson County; 10 of them have a higher latest lead result than Tri County Point Water System 4. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Independence Pws | 120,000 | 1.1 ppb |
| Lees Summit Pws | 99,400 | 0 (not detected) |
| Blue Springs Pws | 61,084 | 2.81 ppb |
| Jackson County Pwsd 1 | 24,500 | 3.45 ppb |
| Raytown Water Company | 17,066 | 0 (not detected) |
| Jackson County Pwsd 2 | 16,440 | 0 (not detected) |
| Grain Valley Pws | 16,000 | 0 (not detected) |
| Jackson County Pwsd 13 | 9,700 | 1.54 ppb |
| Oak Grove Pws | 9,200 | 0 (not detected) |
| Jackson County Pwsd 15 | 8,772 | 0 (not detected) |
What to do in your house
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 Tri County Point Water System 4 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. Why an old exceedance still matters: over the limit before, under it now.