Ledoux Mdwca, NM
Exceeded the action level in the past
Latest 90th-percentile lead: 2.5 ppb (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.
About Ledoux Mdwca
Ledoux Mdwca serves about 117 people through 58 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 Mora County, New Mexico. EPA system ID: NM3500318; phone on file: 505-718-9472. They can tell you what your service line is made of and whether they pay to replace it.
Lead results over time
Against the period ending 2025 (3 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Ledoux Mdwca is 20 ppb across 8 monitoring periods, 2 of them over the 15 ppb action level.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 2.5 ppb |
| 2025 | 3 ppb |
| 2025 | 0.99 ppb |
| 2022 | 2.6 ppb |
| 2019 | 20 ppb over 15 |
| 2018 | 2.3 ppb |
| 2018 | 3.5 ppb |
| 2017 | 20 ppb over 15 |
Against other New Mexico systems
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. Ledoux Mdwca's 2.5 ppb sits at the 70th percentile in New Mexico and the 77th nationally (higher means more lead).
Other water systems in Mora County
14 other systems share Mora County; 3 of them have a higher latest lead result than Ledoux Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Mora Mdwca & Swa | 1,100 | 6 ppb |
| Wagon Mound Water System | 402 | - |
| Agua Pura Mdwca | 357 | 2.4 ppb |
| Upper Holman Mdwca | 325 | 2 ppb |
| Cleveland Mdwca | 270 | 3 ppb |
| San Antonio De Cleveland Mdwca | 269 | 1.9 ppb |
| Agua Negra Mdwca | 242 | 0 (not detected) |
| Buena Vista Mdwc & Swa | 225 | 0.4 ppb |
| Rainsville Water & Sanitation District | 177 | 1.3 ppb |
| Watrous Mdwca | 135 | 0 (not detected) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Mora, NM 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 Ledoux 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. More in what a past exceedance means today.