Big Five Park, NV
Lead detected, under the action levels
Latest 90th-percentile lead: 1.2 ppb (monitoring period 2021-2023). 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.
About Big Five Park
Big Five Park serves about 65 people through 53 service connections, which makes it a very small system under EPA's size classes. It is privately owned and draws groundwater, in Nye County, Nevada. EPA system ID: NV0000362. Ask the utility on your bill for your address in their service line inventory.
Big Five Park's lead record
That is up 1.2 ppb from 0 ppb in the period ending 2020. The highest 90th-percentile result EPA holds for Big Five Park is 1.2 ppb across 2 monitoring periods, none of them over 15 ppb.
| Period ending | 90th-percentile lead |
|---|---|
| 2023 | 1.2 ppb |
| 2020 | 0 (not detected) |
Against other Nevada systems
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. Big Five Park's 1.2 ppb sits at the 57th percentile in Nevada and the 58th nationally (higher means more lead).
Neighbouring systems
25 other systems share Nye County; 9 of them have a higher latest lead result than Big Five Park. 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 |
| Mountain Falls Water System Gbwc | 4,345 | 0 (not detected) |
| 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) |
What to do in your house
Test your own tap with a certified lab first-draw sample; Henderson, NV 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 Big Five Park 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. Size matters more than most people expect: small vs large water systems.