What was found in Coupland'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 | 2562.5 µg/L 26% of the EPA limit 10000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Nitrate-Nitrite | 2287 µg/L 23% of the EPA limit 10000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2015 | 1/1 | SYR4 |
| Fluoride | 1625 µg/L 41% of the EPA limit 4000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Copper | 290 µg/L 22% of the EPA limit 1300 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Nitrite | 185 µg/L 19% of the EPA limit 1000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2015 | 1/1 | SYR4 |
| Xylenes, Total | 142.25 µg/L 1.4% of the EPA limit 10000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Barium | 142 µg/L 7.1% of the EPA limit 2000 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Cyanide | 117.1 µg/L 59% of the EPA limit 200 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Lithium | 83.8 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| TTHM | 64.85 µg/L 81% of the EPA limit 80 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Ethylbenzene | 28.25 µg/L 4% of the EPA limit 700 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 24.02 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 22.16 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 21.58 µg/L 36% of the EPA limit 60 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Chloroform | 18.9 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Dichloroacetic Acid | 11.6 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Bromoform | 9.495 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 8.645 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 6.59 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Selenium | 6.525 µg/L 13% of the EPA limit 50 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.36 pCi/L 42% of the EPA limit 15 pCi/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Lead | 4.875 µg/L 33% of the EPA limit 15 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 4.4 pCi/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Chromium | 4.0695 µg/L 4.1% of the EPA limit 100 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 3.735 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Arsenic | 2.665 µg/L 27% of the EPA limit 10 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Combined Uranium | 2.3 µg/L 7.7% of the EPA limit 30 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2.108 pCi/L 42% of the EPA limit 5 pCi/L Main supplier: MANVILLE WSC · 39,648 people · 2017 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.94 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Atrazine | 0.6525 µg/L 22% of the EPA limit 3 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| Simazine | 0.1480 µg/L 3.7% of the EPA limit 4 µg/L Main supplier: MANVILLE WSC · 39,648 people · 2019 | 1/1 | SYR4 |
| PFNA | 0.0243 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| PFOS | 0.0124 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| PFBS | 0.0100 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Pfpea | 0.0091 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Pfhxa | 0.0087 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Pfba | 0.0074 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| PFHXS | 0.0070 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| PFOA | 0.0059 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Pfhpa | 0.0043 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Pfuna | 0.0027 µg/L No EPA limit set Main supplier: MANVILLE WSC · 39,648 people · 2023 | 1/1 | UCMR-5 |
| Lead | 0.0014 mg/L 9.4% of the EPA limit 0.0150 mg/L Main supplier: MANVILLE WSC · 39,648 people · 2025 | 1/1 | 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 Coupland
| Supplier | Population served |
|---|---|
| MANVILLE WSC | 39,648 |
Frequently asked questions about Coupland tap water
Is Coupland tap water safe to drink?
EPA testing detected 42 contaminants in the water serving Coupland. 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 Coupland?
1 public water supplier report drinking-water monitoring for Coupland, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Coupland's water?
The contaminants EPA monitoring detected in Coupland include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite. 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.