Mountain Falls Water System Gbwc, NV
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.
Mountain Falls Water System Gbwc at a glance
Mountain Falls Water System Gbwc serves about 4,345 people through 1,612 service connections, which makes it a medium-sized system under EPA's size classes. It is privately owned and draws groundwater, in Nye County, Nevada. EPA system ID: NV0000920; phone on file: 775-727-5575. 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 2022 (0 ppb) the latest result is about the same. The highest 90th-percentile result EPA holds for Mountain Falls Water System Gbwc is 1 ppb across 4 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2025 | 0 (not detected) |
| 2022 | 0 (not detected) |
| 2019 | 0 (not detected) |
| 2016 | 1 ppb |
Where this result ranks
Of the 204 Nevada systems with a lead result, the median latest reading is 1 ppb; 0 are over 15 ppb right now and 13 have gone over at some point. Mountain Falls Water System Gbwc's reported as 0 (not detected) sits at the 35th percentile in Nevada and the 34th nationally (higher means more lead). Systems reporting 0 tie at the bottom, so the rank mostly reflects size among them.
Nearby utilities
25 other systems share Nye County; 14 of them have a higher latest lead result than Mountain Falls Water System Gbwc. If you are unsure which one supplies your house, the name on your water bill decides it.
| System | People | Latest lead |
|---|---|---|
| Great Basin Water Company | 12,255 | 3 ppb |
| Tonopah Public Utilities | 2,853 | 3 ppb |
| Round Mountain Puc | 1,200 | 0 (not detected) |
| Desert Utilities | 1,086 | 0 (not detected) |
| Country View Estates Gbwc | 1,072 | 3 ppb |
| Beatty Water And Sanitation District | 1,024 | 1.4 ppb |
| Pahrump Utility Company Inc | 985 | 0.6 ppb |
| Carvers Smokey Valley Rv And Mhp | 250 | 0 (not detected) |
| Shoshone Estates Water Co Inc | 240 | 0 (not detected) |
| Gabbs Water System | 237 | 0 (not detected) |
Next steps for Pahrump, NV
Look up your address in Mountain Falls Water System Gbwc'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 Mountain Falls Water System Gbwc 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. A zero today does not rule out a jump later - the rules are tightening in 2027.