Caballo Lake Mdwca, NM
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2024-2026). The federal action level is 15 ppb today and drops to 10 ppb in Nov 2027; EPA's health goal is 0. The latest 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 Caballo Lake Mdwca
Caballo Lake Mdwca serves about 102 people through 49 service connections, which makes it a very small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Sierra County, New Mexico. EPA system ID: NM3510027; phone on file: 719-836-2403. Call that number and ask whether your address has a lead, galvanized or unknown service line.
Caballo Lake Mdwca's lead record
The highest 90th-percentile result EPA holds for Caballo Lake Mdwca is 0 ppb across 1 monitoring period, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
How Caballo Lake Mdwca compares
Of the 504 New Mexico systems with a lead result, the median latest reading is 1.4 ppb; 14 are over 15 ppb right now and 46 have gone over at some point. Caballo Lake Mdwca's reported as 0 (not detected) sits at the 7th percentile in New Mexico and the 10th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
5 other systems share Sierra County; 3 of them have a higher latest lead result than Caballo Lake Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Truth Or Consequences | 6,783 | 1.1 ppb |
| Elephant Butte Water System | 2,286 | 0 (not detected) |
| Elephant Butte, City Of | 1,350 | 1.9 ppb |
| Hillsboro Mdwca | 172 | 2.7 ppb |
| Desertaire Water Company | 45 | 0 (not detected) |
What to do in your house
Look up your address in Caballo Lake Mdwca'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 Caballo Lake Mdwca 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. A zero today does not rule out a jump later - the rules are tightening in 2027.