Copano Ridge Subdivision, MO
Lead detected, under the action levels
Latest 90th-percentile lead: 1.21 ppb (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. Lead was measured in sampled homes but the 90th percentile is under both action levels. EPA's health goal for lead is zero, so test your own tap if your home was built before 1986 or anyone in it is pregnant or a young child.
Copano Ridge Subdivision at a glance
Copano Ridge Subdivision serves about 765 people through 255 service connections, which makes it a small system under EPA's size classes. It is privately owned and draws surface water, in Aransas County, Missouri. EPA system ID: TX0040029; phone on file: 314-380-8524. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
The highest 90th-percentile result EPA holds for Copano Ridge Subdivision is 1.21 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.21 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. Copano Ridge Subdivision's 1.21 ppb sits at the 54th percentile in Missouri and the 59th nationally (higher means more lead).
Neighbouring systems
3 other systems share Aransas County; 2 of them have a higher latest lead result than Copano Ridge Subdivision. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Copano Cove Subdivision | 1,668 | 1.6 ppb |
| Aransas Bay Utilities | 1,062 | 1.5 ppb |
| Copano Heights Water | 330 | 0 (not detected) |
What to do in your house
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 Copano Ridge Subdivision 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. Size matters more than most people expect: small vs large water systems.