What was found in Sherman'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 |
|---|---|---|---|
| Fluoride | 1282.5 µg/L 32% of the EPA limit 4000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the city: 1632 µg/L — LUELLA SUD · 4,200 people · 2017 | 2/2 | SYR4 |
| Nitrate-Nitrite | 418.75 µg/L 4.2% of the EPA limit 10000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2015 | 2/2 | SYR4 |
| Nitrate | 371.7 µg/L 3.7% of the EPA limit 10000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Copper | 156.8 µg/L 12% of the EPA limit 1300 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the city: 294.5 µg/L — LUELLA SUD · 4,200 people · 2019 | 2/2 | SYR4 |
| Barium | 87 µg/L 4.4% of the EPA limit 2000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| TTHM | 68.28 µg/L 85% of the EPA limit 80 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Cyanide | 41.41 µg/L 21% of the EPA limit 200 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Lithium | 30.7 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023
Highest in the city: 32 µg/L — LUELLA SUD · 4,200 people · 2025 | 2/2 | UCMR-5 |
| Dibromochloromethane | 26.29 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 22.87 µg/L 38% of the EPA limit 60 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 19.36 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Bromoform | 18.99 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Chloroform | 17.89 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 11.58 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 10.32 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 8.65 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Chromium | 5.955 µg/L 6% of the EPA limit 100 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Selenium | 5.464 µg/L 11% of the EPA limit 50 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.1 pCi/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2017 | 1/2 | SYR4 |
| Monobromoacetic Acid | 5.05 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Trichloroacetic Acid | 4.22 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.5 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: CITY OF SHERMAN · 43,645 people · 2017 | 1/2 | SYR4 |
| Lead | 3.414 µg/L 23% of the EPA limit 15 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.589 µg/L 16% of the EPA limit 10 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF SHERMAN · 43,645 people · 2017 | 2/2 | SYR4 |
| Thallium, Total | 0.8500 µg/L 43% of the EPA limit 2 µg/L Highest in the city: LUELLA SUD · 4,200 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7800 µg/L 13% of the EPA limit 6 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.7000 µg/L 0.2% of the EPA limit 400 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.2100 µg/L 3.5% of the EPA limit 6 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0083 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/2 | UCMR-5 |
| Pfpea | 0.0038 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2025 | 2/2 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Sherman
| Supplier | Population served |
|---|---|
| CITY OF SHERMAN | 43,645 |
| LUELLA SUD | 4,200 |
Frequently asked questions about Sherman tap water
Is Sherman tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Sherman. 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 Sherman?
2 public water suppliers report drinking-water monitoring for Sherman, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Sherman's water?
The contaminants EPA monitoring detected in Sherman include Fluoride, Nitrate-Nitrite, Nitrate, Copper, 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.