Picacho Mdwca, NM
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (monitoring period 2023-2025). 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.
About Picacho Mdwca
Picacho Mdwca serves about 847 people through 323 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 Dona Ana County, New Mexico. EPA system ID: NM3545907; phone on file: 575-526-2445. 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 2021 (0.64 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Picacho Mdwca is 1.5 ppb across 3 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2021 | 0.64 ppb |
| 2018 | 1.5 ppb |
Where this result ranks
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. Picacho Mdwca's reported as 0 (not detected) sits at the 19th percentile in New Mexico and the 26th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Neighbouring systems
43 other systems share Dona Ana County; 26 of them have a higher latest lead result than Picacho Mdwca. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Las Cruces Municipal Water System | 98,175 | 2 ppb |
| New Mexico State University | 24,000 | 4 ppb |
| Camino Real Regional Utility Authority | 21,930 | 5 ppb |
| Dona Ana Mdwca | 16,987 | 1.9 ppb |
| Lake Section Water Company | 14,619 | 0 (not detected) |
| Moongate West | 13,362 | 0.56 ppb |
| Lower Rio Grande Pwwa South Valley | 11,542 | 0.31 ppb |
| Moongate Water System | 9,170 | 0.51 ppb |
| Anthony W&Sd | 8,691 | 2 ppb |
| University Estates Water System (Lcu) | 5,292 | 0 (not detected) |
What to do in your house
Look up your address in Picacho 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 Picacho 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. Small systems behave differently: why small systems go over more often.