What was found in Nacogdoches'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 |
|---|---|---|---|
| Copper | 406.8 µg/L 31% of the EPA limit 1300 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2017
Highest in the city: 1114 µg/L — MELROSE WSC · 3,143 people · 2017 | 8/8 | SYR4 |
| Fluoride | 747.25 µg/L 19% of the EPA limit 4000 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 813.4 µg/L — APPLEBY WSC · 5,745 people · 2018 | 7/8 | SYR4 |
| Nitrate-Nitrite | 159.55 µg/L 1.6% of the EPA limit 10000 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2015
Highest in the city: 234.05 µg/L — CARO WSC · 2,412 people · 2015 | 7/8 | SYR4 |
| Nitrate | 234 µg/L 2.3% of the EPA limit 10000 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019 | 7/8 | SYR4 |
| Cyanide | 135 µg/L 68% of the EPA limit 200 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019 | 5/8 | SYR4 |
| TTHM | 64.4 µg/L 81% of the EPA limit 80 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 98.3 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Chloroform | 46.165 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 77.345 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Barium | 54.06 µg/L 2.7% of the EPA limit 2000 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 66.8 µg/L — LILLY GROVE SUD · 2,435 people · 2019 | 7/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.4 µg/L 54% of the EPA limit 60 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 54.275 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Xylenes, Total | 35.566 µg/L 0.4% of the EPA limit 10000 µg/L Highest in the city: WODEN WSC · 2,237 people · 2019 | 5/8 | SYR4 |
| Trichloroacetic Acid | 10 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 29.625 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Dichloroacetic Acid | 17.5 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 25.325 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Bromodichloromethane | 16.235 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 20.5 µg/L — APPLEBY WSC · 5,745 people · 2019 | 8/8 | SYR4 |
| Lead | 8.604 µg/L 57% of the EPA limit 15 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2017
Highest in the city: 19.2175 µg/L — MELROSE WSC · 3,143 people · 2017 | 8/8 | SYR4 |
| Dibromoacetic Acid | 16.76 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019 | 5/8 | SYR4 |
| Lithium | 14 µg/L No EPA limit set Highest in the city: APPLEBY WSC · 5,745 people · 2025 | 1/8 | UCMR-5 |
| Chromium | 13.64 µg/L 14% of the EPA limit 100 µg/L Highest in the city: APPLEBY WSC · 5,745 people · 2019 | 4/8 | SYR4 |
| Dibromochloromethane | 9.1205 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 11.839 µg/L — LILLY GROVE SUD · 2,435 people · 2019 | 8/8 | SYR4 |
| Monochloroacetic Acid | 5.785 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 6.07 µg/L — APPLEBY WSC · 5,745 people · 2019 | 6/8 | SYR4 |
| Ethylbenzene | 5.612 µg/L 0.8% of the EPA limit 700 µg/L Highest in the city: WODEN WSC · 2,237 people · 2019 | 3/8 | SYR4 |
| Monobromoacetic Acid | 4.53 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019 | 4/8 | SYR4 |
| Gross Beta Particle Activity | 4.1 pCi/L No EPA limit set Highest in the city: LILLY GROVE SUD · 2,435 people · 2018 | 1/8 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.899 µg/L 65% of the EPA limit 6 µg/L Highest in the city: WODEN WSC · 2,237 people · 2019 | 2/8 | SYR4 |
| Bromoform | 1.655 µg/L No EPA limit set Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 2.45 µg/L — LILLY GROVE SUD · 2,435 people · 2019 | 4/8 | SYR4 |
| Selenium | 2.16 µg/L 4.3% of the EPA limit 50 µg/L Highest in the city: MELROSE WSC · 3,143 people · 2018 | 3/8 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2017
Highest in the city: 2.04 pCi/L — LILLY GROVE SUD · 2,435 people · 2018 | 7/8 | SYR4 |
| Arsenic | 1.04 µg/L 10% of the EPA limit 10 µg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2019
Highest in the city: 1.2 µg/L — APPLEBY WSC · 5,745 people · 2019 | 2/8 | SYR4 |
| Atrazine | 0.2000 µg/L 6.7% of the EPA limit 3 µg/L Highest in the city: MELROSE WSC · 3,143 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF NACOGDOCHES · 50,226 people · 2023
Highest in the city: 0.0024 mg/L — APPLEBY WSC · 5,745 people · 2023 | 8/8 | 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 Nacogdoches
| Supplier | Population served |
|---|---|
| CITY OF NACOGDOCHES | 50,226 |
| APPLEBY WSC | 5,745 |
| MELROSE WSC | 3,143 |
| SWIFT WSC | 2,547 |
| LILLY GROVE SUD | 2,435 |
| CARO WSC | 2,412 |
| WODEN WSC | 2,237 |
| NACOGDOCHES COUNTY MUD 1 | 208 |
Frequently asked questions about Nacogdoches tap water
Is Nacogdoches tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Nacogdoches. 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 Nacogdoches?
8 public water suppliers report drinking-water monitoring for Nacogdoches, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Nacogdoches's water?
The contaminants EPA monitoring detected in Nacogdoches include Copper, Fluoride, Nitrate-Nitrite, Nitrate, Cyanide. 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.