What was found in Trinity'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 | 1246.45 µg/L 12% of the EPA limit 10000 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 8430 µg/L — TRINITY RURAL WSC 1 · 1,700 people · 2019 | 4/6 | SYR4 |
| Copper | 1066.5 µg/L 82% of the EPA limit 1300 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2017
Highest in the city: 2195 µg/L — TRINITY RURAL WSC 3 · 1,428 people · 2019 | 6/6 | SYR4 |
| Nitrate-Nitrite | 637.5 µg/L 6.4% of the EPA limit 10000 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2015
Highest in the city: 769.65 µg/L — TRINITY RURAL WSC 3 · 1,428 people · 2019 | 3/6 | SYR4 |
| Fluoride | 512.8 µg/L 13% of the EPA limit 4000 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2017 | 4/6 | SYR4 |
| Barium | 55.9 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 114.5 µg/L — TRINITY RURAL WSC 1 · 1,700 people · 2019 | 4/6 | SYR4 |
| TTHM | 96.7 µg/L 121% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 103.05 µg/L — GLENDALE WSC · 1,458 people · 2019 | 6/6 | SYR4 |
| Nitrite | 93 µg/L 9.3% of the EPA limit 1000 µg/L Highest in the city: TRINITY RURAL WSC 3 · 1,428 people · 2019 | 1/6 | SYR4 |
| Xylenes, Total | 79.3575 µg/L 0.8% of the EPA limit 10000 µg/L Highest in the city: GLENDALE WSC · 1,458 people · 2019 | 1/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 33.95 µg/L 57% of the EPA limit 60 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 65.6 µg/L — WESTWOOD SHORES MUD · 2,125 people · 2019 | 6/6 | SYR4 |
| Bromoform | 55.3 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 6/6 | SYR4 |
| Chloroform | 6.1715 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 52.78 µg/L — TRINITY RURAL WSC 2 · 322 people · 2019 | 6/6 | SYR4 |
| Dichloroacetic Acid | 4.1 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 42.74 µg/L — WESTWOOD SHORES MUD · 2,125 people · 2019 | 6/6 | SYR4 |
| Bromodichloromethane | 18 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 38.325 µg/L — WESTWOOD SHORES MUD · 2,125 people · 2019 | 6/6 | SYR4 |
| Dibromochloromethane | 37.8 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 6/6 | SYR4 |
| Cyanide | 35.965 µg/L 18% of the EPA limit 200 µg/L Highest in the city: GLENDALE WSC · 1,458 people · 2017 | 3/6 | SYR4 |
| Monochloroacetic Acid | 28.9 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 6/6 | SYR4 |
| Lead | 12.825 µg/L 86% of the EPA limit 15 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2017
Highest in the city: 25.55 µg/L — GLENDALE WSC · 1,458 people · 2019 | 6/6 | SYR4 |
| Trichloroacetic Acid | 4.835 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 25.22 µg/L — TRINITY RURAL WSC 1 · 1,700 people · 2019 | 6/6 | SYR4 |
| Ethylbenzene | 16.602 µg/L 2.4% of the EPA limit 700 µg/L Highest in the city: GLENDALE WSC · 1,458 people · 2019 | 1/6 | SYR4 |
| Dibromoacetic Acid | 14.6 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 6/6 | SYR4 |
| Gross Beta Particle Activity | 11.74 pCi/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 4/6 | SYR4 |
| Selenium | 5.592 µg/L 11% of the EPA limit 50 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019 | 4/6 | SYR4 |
| Chromium | 3.256 µg/L 3.3% of the EPA limit 100 µg/L Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 3.997 µg/L — TRINITY RURAL WSC 1 · 1,700 people · 2019 | 4/6 | SYR4 |
| Monobromoacetic Acid | 2.515 µg/L No EPA limit set Main supplier: CITY OF TRINITY · 4,619 people · 2019
Highest in the city: 3.42 µg/L — TRINITY RURAL WSC 1 · 1,700 people · 2019 | 6/6 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Main supplier: CITY OF TRINITY · 4,619 people · 2013
Highest in the city: 2.385 pCi/L — GLENDALE WSC · 1,458 people · 2018 | 3/6 | SYR4 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 3/6 | SYR4 |
| Toluene | 0.8310 µg/L 0.1% of the EPA limit 1000 µg/L Highest in the city: GLENDALE WSC · 1,458 people · 2019 | 1/6 | SYR4 |
| Antimony, Total | 0.5430 µg/L 9.1% of the EPA limit 6 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 2/6 | SYR4 |
| Thallium, Total | 0.4021 µg/L 20% of the EPA limit 2 µg/L Highest in the city: GLENDALE WSC · 1,458 people · 2019 | 1/6 | SYR4 |
| Atrazine | 0.2560 µg/L 8.5% of the EPA limit 3 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 1/6 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.2390 µg/L 4% of the EPA limit 6 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 1/6 | SYR4 |
| Simazine | 0.2150 µg/L 5.4% of the EPA limit 4 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 1/6 | SYR4 |
| Endrin | 0.1630 µg/L 8.2% of the EPA limit 2 µg/L Highest in the city: TRINITY RURAL WSC 1 · 1,700 people · 2019 | 1/6 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF TRINITY · 4,619 people · 2023 | 6/6 | 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 Trinity
| Supplier | Population served |
|---|---|
| CITY OF TRINITY | 4,619 |
| WESTWOOD SHORES MUD | 2,125 |
| TRINITY RURAL WSC 1 | 1,700 |
| GLENDALE WSC | 1,458 |
| TRINITY RURAL WSC 3 | 1,428 |
| TRINITY RURAL WSC 2 | 322 |
Frequently asked questions about Trinity tap water
Is Trinity tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Trinity. 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 Trinity?
6 public water suppliers report drinking-water monitoring for Trinity, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Trinity's water?
The contaminants EPA monitoring detected in Trinity include Nitrate, Copper, Nitrate-Nitrite, Fluoride, 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.