San Antonio Mdwca, NM
Lead detected, under the action levels
Latest 90th-percentile lead: 2 ppb (monitoring period 2022-2024). 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.
San Antonio Mdwca at a glance
San Antonio Mdwca serves about 1,344 people through 420 service connections, which makes it a small system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Socorro County, New Mexico. EPA system ID: NM3573928; phone on file: 575-835-0589. Ask them for your address in their service line inventory - every system had to publish one by Oct 2024.
Every lead result on file
Against the period ending 2018 (1 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for San Antonio Mdwca is 2 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2024 | 2 ppb |
| 2018 | 1 ppb |
How San Antonio 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. San Antonio Mdwca's 2 ppb sits at the 63rd percentile in New Mexico and the 72nd nationally (higher means more lead).
Nearby utilities
6 other systems share Socorro County; 2 of them have a higher latest lead result than San Antonio Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Socorro Water System | 12,026 | 0 (not detected) |
| Polvadera Mdwca | 2,470 | 1.4 ppb |
| Magdalena Village Of | 1,321 | 2.6 ppb |
| San Acacia Mdwca | 284 | 0 (not detected) |
| La Joya Mdwca | 200 | 0.7 ppb |
| New Mexico Boys And Girls Ranch | 60 | 9.1 ppb |
Your move
Test your own tap with a certified lab first-draw sample; San Antonio, 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 San Antonio 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. Why sampled homes are the worst-case ones is in the guide to reading the number. Systems that went over once often dip back under; here is what that means.