What was found in Topaz's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 5600 µg/L 56% of the EPA limit 10000 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 3960 µg/L 40% of the EPA limit 10000 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Fluoride | 740 µg/L 19% of the EPA limit 4000 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Arsenic | 168 µg/L 1680% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Barium | 99.3 µg/L 5% of the EPA limit 2000 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Copper | 35.75 µg/L 2.8% of the EPA limit 1300 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Combined Uranium | 6.7 µg/L 22% of the EPA limit 30 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Tetrachloroethylene | 6.52 µg/L 130% of the EPA limit, at the 95th percentile of samples — 5 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 5.084 pCi/L No EPA limit set Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| Trichloroethylene | 1.529 µg/L 31% of the EPA limit 5 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| TTHM | 1.3 µg/L 1.6% of the EPA limit 80 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Mercury | 1.1 µg/L 55% of the EPA limit 2 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | SYR4 |
| 1,1-Dichloroethylene | 0.9000 µg/L 13% of the EPA limit 7 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Chloroform | 0.8800 µg/L No EPA limit set Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Bromoform | 0.6200 µg/L No EPA limit set Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| cis-1,2-Dichloroethylene | 0.5200 µg/L 0.7% of the EPA limit 70 µg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 0.3941 pCi/L 7.9% of the EPA limit 5 pCi/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2015 | 1/1 | SYR4 |
| Lead | 0.0030 mg/L 20% of the EPA limit 0.0150 mg/L Main supplier: TOPAZ LAKE WATER CO INC · 40 people · 2018 | 1/1 | LCR |
Water suppliers serving Topaz
| Supplier | Population served |
|---|---|
| TOPAZ LAKE WATER CO INC | 40 |
Frequently asked questions about Topaz tap water
Is Topaz tap water safe to drink?
EPA testing detected 19 contaminants in the water serving Topaz. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Topaz?
1 public water supplier report drinking-water monitoring for Topaz, Nevada to the EPA. Each is listed above with its population served.
What contaminants are in Topaz's water?
The contaminants EPA monitoring detected in Topaz include Nitrate, Nitrate-Nitrite, Fluoride, Arsenic, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.