What was found in Edinburg'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-Nitrite | 1628 µg/L 16% of the EPA limit 10000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 1/2 | SYR4 |
| Fluoride | 600 µg/L 15% of the EPA limit 4000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 712.5 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Chlorite | 532.6 µg/L 53% of the EPA limit 1000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 710 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Nitrate | 555 µg/L 5.6% of the EPA limit 10000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Copper | 309.8 µg/L 24% of the EPA limit 1300 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Cyanide | 150 µg/L 75% of the EPA limit 200 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 180 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Barium | 127.85 µg/L 6.4% of the EPA limit 2000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| TTHM | 75.02 µg/L 94% of the EPA limit 80 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 83.65 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Lithium | 50 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 2/2 | UCMR-5 |
| Nitrite | 49 µg/L 4.9% of the EPA limit 1000 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 1/2 | SYR4 |
| Bromoform | 24.04 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 45.38 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 34.805 µg/L 58% of the EPA limit 60 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 24.905 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 26.46 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 14.975 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 23.05 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 19.05 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 13.81 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 9.46 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 10.79 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Lead | 9.602 µg/L 64% of the EPA limit 15 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Chloroform | 9.495 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 9.26 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 8.375 pCi/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2017 | 2/2 | SYR4 |
| Trichloroacetic Acid | 6.68 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Arsenic | 6.1 µg/L 61% of the EPA limit 10 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Selenium | 5.1 µg/L 10% of the EPA limit 50 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 2.62 µg/L 8.7% of the EPA limit 30 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2017
Highest in the city: 3.41 µg/L — CITY OF EDINBURG · 85,224 people · 2017 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3 pCi/L 20% of the EPA limit 15 pCi/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2017 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7900 µg/L 13% of the EPA limit 6 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019
Highest in the city: 2.2 µg/L — CITY OF EDINBURG · 85,224 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2017 | 2/2 | SYR4 |
| Dichloromethane | 1.485 µg/L 30% of the EPA limit 5 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.5310 µg/L 8.9% of the EPA limit 6 µg/L Highest in the city: CITY OF EDINBURG · 85,224 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.1100 µg/L 3.7% of the EPA limit 3 µg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0122 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 2/2 | UCMR-5 |
| PFOS | 0.0045 µg/L No EPA limit set Highest in the city: CITY OF EDINBURG · 85,224 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0038 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0035 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 1/2 | UCMR-5 |
| PFBS | 0.0030 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023
Highest in the city: 0.0034 µg/L — CITY OF EDINBURG · 85,224 people · 2024 | 2/2 | UCMR-5 |
| PFHXS | 0.0034 µg/L No EPA limit set Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORTH ALAMO WSC · 171,195 people · 2023 | 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 Edinburg
| Supplier | Population served |
|---|---|
| NORTH ALAMO WSC | 171,195 |
| CITY OF EDINBURG | 85,224 |
Frequently asked questions about Edinburg tap water
Is Edinburg tap water safe to drink?
EPA testing detected 38 contaminants in the water serving Edinburg. 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 Edinburg?
2 public water suppliers report drinking-water monitoring for Edinburg, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Edinburg's water?
The contaminants EPA monitoring detected in Edinburg include Nitrate-Nitrite, Fluoride, Chlorite, Nitrate, Copper. 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.