Cs El Prado Water Company, MO
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 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.
Who runs the water here
Cs El Prado Water Company serves about 404 people through 158 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Yuma County, Missouri. EPA system ID: AZ0414442; phone on file: 602-698-9786. They can tell you what your service line is made of and whether they pay to replace it.
Every lead result on file
Against the period ending 2023 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Cs El Prado Water Company is 0 ppb across 6 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2023 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2017 | 0 (not detected) |
| 2016 | 0 (not detected) |
How Cs El Prado Water Company 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. Cs El Prado Water Company's reported as 0 (not detected) sits at the 22nd percentile in Missouri and the 21st nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
7 other systems share Yuma County; 3 of them have a higher latest lead result than Cs El Prado Water Company. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Cs Tierra Mesa Estates Water Company | 632 | 0 (not detected) |
| Cs Gadsden Water Company | 540 | 0 (not detected) |
| Cs Mohawk Utility Company | 243 | 4.3 ppb |
| Cs Antelope Water Company | 163 | 5 ppb |
| Cs Rancheros Bonitos Water Company | 120 | 0 (not detected) |
| Cs Green Acres Water Company | 105 | 0 (not detected) |
| Cs Citrus Park Water Company | 102 | 0.37 ppb |
Next steps for St. Louis, MO
Look up your address in Cs El Prado Water Company'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 Cs El Prado Water Company 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.