Belen Water System, NM
Lead reported as not detected
Latest 90th-percentile lead: reported as 0 (not detected) (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 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.
Belen Water System at a glance
Belen Water System serves about 10,830 people through 3,827 service connections, which makes it a large system under EPA's size classes. It is owned by a local government (city, town, county or district) and draws groundwater, in Valencia County, New Mexico. EPA system ID: NM3524932; phone on file: 505-712-6323. They can tell you what your service line is made of and whether they pay to replace it.
Belen Water System's lead record
Against the period ending 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Belen Water System is 2 ppb across 7 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2026 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2018 | 2 ppb |
| 2017 | 0 (not detected) |
| 2016 | 1 ppb |
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. Belen Water System's reported as 0 (not detected) sits at the 23rd percentile in New Mexico and the 37th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
16 other systems share Valencia County; 7 of them have a higher latest lead result than Belen Water System. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Los Lunas Water System | 19,400 | 5 ppb |
| Rio Communities Water System | 5,513 | 1.3 ppb |
| Rio Del Oro Water System | 4,387 | 0 (not detected) |
| Bosque Farms Water Supply System | 4,367 | 1 ppb |
| Meadow Lake Water System | 2,760 | 0 (not detected) |
| Monterey Water Company Inc. | 1,472 | 1.4 ppb |
| Hi Mesa Water System | 259 | 0 (not detected) |
| Correo Water Association | 201 | 1.3 ppb |
| Bosque Gardens Mdwca | 141 | 2.2 ppb |
| Trails End Mhp | 112 | 3.4 ppb |
Your move
Look up your address in Belen Water System'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 Belen Water System 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. The lead result guide covers how utilities pick the homes they sample. Small systems behave differently: why small systems go over more often.