What was found in Ennis'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 | 838 µg/L 8.4% of the EPA limit 10000 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Fluoride | 645.2 µg/L 16% of the EPA limit 4000 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Copper | 360 µg/L 28% of the EPA limit 1300 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019
Highest in the city: 636 µg/L — EAST GARRETT WSC · 1,521 people · 2017 | 2/2 | SYR4 |
| Cyanide | 139.7 µg/L 70% of the EPA limit 200 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| TTHM | 70.2 µg/L 88% of the EPA limit 80 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Barium | 68.7 µg/L 3.4% of the EPA limit 2000 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Chloroform | 34.23 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 30.39 µg/L 51% of the EPA limit 60 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019
Highest in the city: 32.4 µg/L — EAST GARRETT WSC · 1,521 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 26.62 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 19.99 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 15.31 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019
Highest in the city: 18.05 µg/L — EAST GARRETT WSC · 1,521 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 12.51 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 6.5 pCi/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2017 | 1/2 | SYR4 |
| Dibromoacetic Acid | 6.375 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Bromoform | 6.26 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 6.14 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Lead | 5.4725 µg/L 36% of the EPA limit 15 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Selenium | 3.9 µg/L 7.8% of the EPA limit 50 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 2.935 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 2/2 | SYR4 |
| Chromium | 2.675 µg/L 2.7% of the EPA limit 100 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Arsenic | 1.71 µg/L 17% of the EPA limit 10 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF ENNIS · 24,891 people · 2017 | 1/2 | SYR4 |
| Antimony, Total | 0.2598 µg/L 4.3% of the EPA limit 6 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.2572 µg/L 8.6% of the EPA limit 3 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.0506 µg/L 1.3% of the EPA limit 4 µg/L Main supplier: CITY OF ENNIS · 24,891 people · 2019 | 1/2 | SYR4 |
| Pfpea | 0.0173 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0132 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2023 | 1/2 | UCMR-5 |
| Pfba | 0.0120 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2023 | 1/2 | UCMR-5 |
| PFBS | 0.0072 µg/L No EPA limit set Main supplier: CITY OF ENNIS · 24,891 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF ENNIS · 24,891 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 Ennis
| Supplier | Population served |
|---|---|
| CITY OF ENNIS | 24,891 |
| EAST GARRETT WSC | 1,521 |
Frequently asked questions about Ennis tap water
Is Ennis tap water safe to drink?
EPA testing detected 30 contaminants in the water serving Ennis. 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 Ennis?
2 public water suppliers report drinking-water monitoring for Ennis, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Ennis's water?
The contaminants EPA monitoring detected in Ennis include Nitrate, Fluoride, Copper, Cyanide, TTHM. 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.