Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
3
health-based violations
48
violations on file
0
still open
| Violation | Type | Status | Period |
|---|---|---|---|
| TT | Health-based | Archived | 1993-08-01 → 1993-08-31 |
| TT | Health-based | Archived | 1993-07-01 → 1993-07-31 |
| TT | Health-based | Archived | 1993-07-01 → 1993-07-31 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
| MR | Monitoring | Resolved | 2021-02-01 → 2021-02-28 |
PFAS detected
PFAS are industrial “forever chemicals”. These are the EPA's latest
nationwide test results (2023–2025).
Other contaminants detected
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 this
system's samples — over 100% is worth reading, but is not by itself a
violation. Where a single sample came in higher than that percentile, it
is noted under the bar. Formal violations are listed separately.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Bromoform | 18.99 µg/L No EPA limit set
worst single sample: 29 µg/L | 182/188 | SYR4 | 2012–2019 |
| Dibromochloromethane | 26.29 µg/L No EPA limit set
worst single sample: 36.8 µg/L | 182/188 | SYR4 | 2012–2019 |
| Bromodichloromethane | 19.36 µg/L No EPA limit set
worst single sample: 26.6 µg/L | 153/188 | SYR4 | 2012–2019 |
| Nitrate | 371.7 µg/L 3.7% of the EPA limit 10000 µg/L
worst single sample: 475 µg/L | 144/158 | SYR4 | 2012–2019 |
| TTHM | 68.28 µg/L 85% of the EPA limit 80 µg/L
worst single sample: 87.4 µg/L | 135/136 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 22.87 µg/L 38% of the EPA limit 60 µg/L
worst single sample: 38 µg/L | 124/135 | SYR4 | 2012–2019 |
| Chloroform | 17.89 µg/L No EPA limit set
worst single sample: 25.3 µg/L | 112/188 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 10.32 µg/L No EPA limit set
worst single sample: 14.7 µg/L | 109/135 | SYR4 | 2012–2019 |
| Copper | 156.8 µg/L 12% of the EPA limit 1300 µg/L
worst single sample: 300 µg/L | 89/107 | SYR4 | 2013–2019 |
| Dichloroacetic Acid | 8.65 µg/L No EPA limit set
worst single sample: 20.5 µg/L | 74/135 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 5.05 µg/L No EPA limit set
worst single sample: 7.4 µg/L | 55/135 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 4.22 µg/L No EPA limit set
worst single sample: 6.4 µg/L | 53/135 | SYR4 | 2012–2019 |
| Monochloroacetic Acid | 11.58 µg/L No EPA limit set
worst single sample: 12.9 µg/L | 29/135 | SYR4 | 2012–2019 |
| Barium | 87 µg/L 4.4% of the EPA limit 2000 µg/L
worst single sample: 99 µg/L | 26/26 | SYR4 | 2013–2019 |
| Fluoride | 1282.5 µg/L 32% of the EPA limit 4000 µg/L
worst single sample: 1700 µg/L | 26/26 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 418.75 µg/L 4.2% of the EPA limit 10000 µg/L
worst single sample: 475 µg/L | 22/25 | SYR4 | 2012–2015 |
| Lithium | 30.7 µg/L No EPA limit set | 19/22 | UCMR-5 | 2023 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 14/14 | LCR | 2025 |
| Lead | 3.414 µg/L 23% of the EPA limit 15 µg/L
worst single sample: 4.58 µg/L | 12/107 | SYR4 | 2013–2019 |
| Chromium | 5.955 µg/L 6% of the EPA limit 100 µg/L
worst single sample: 6 µg/L | 10/26 | SYR4 | 2013–2019 |
| Selenium | 5.464 µg/L 11% of the EPA limit 50 µg/L
worst single sample: 5.73 µg/L | 5/26 | SYR4 | 2013–2019 |
| Arsenic | 1.589 µg/L 16% of the EPA limit 10 µg/L
worst single sample: 1.64 µg/L | 4/26 | SYR4 | 2013–2019 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L | 3/56 | SYR4 | 2012–2019 |
| Cyanide | 41.41 µg/L 21% of the EPA limit 200 µg/L
worst single sample: 42.4 µg/L | 3/24 | SYR4 | 2014–2019 |
| Di(2-ethylhexyl) Phthalate | 0.7800 µg/L 13% of the EPA limit 6 µg/L
worst single sample: 0.8000 µg/L | 3/56 | SYR4 | 2012–2019 |
| Antimony, Total | 0.2100 µg/L 3.5% of the EPA limit 6 µg/L | 1/26 | SYR4 | 2013–2019 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 1/1 | SYR4 | 2017 |
| Di(2-ethylhexyl) Adipate | 0.7000 µg/L 0.2% of the EPA limit 400 µg/L | 1/56 | SYR4 | 2012–2019 |
| Gross Alpha, Excl. Radon And U | 3.5 pCi/L 23% of the EPA limit 15 pCi/L | 1/8 | SYR4 | 2017 |
| Gross Beta Particle Activity | 5.1 pCi/L No EPA limit set | 1/8 | SYR4 | 2017 |
76 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about City of Sherman
Is City of Sherman tap water safe to drink?
EPA monitoring detected 33 contaminants in City of Sherman's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in City of Sherman's water?
EPA monitoring detected Bromoform, Dibromochloromethane, Bromodichloromethane, Nitrate, TTHM, and others. The full list with the level and data source for each is above.
How many people does City of Sherman serve?
City of Sherman reports serving 43,645 people in Texas, per its EPA record.
Has City of Sherman had any water quality violations?
The EPA has 48 violations on file for City of Sherman, of which 3 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
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.