What was found in Quinlan'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 |
|---|---|---|---|
| Fluoride | 176.85 µg/L 4.4% of the EPA limit 4000 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019
Highest in the city: 2023 µg/L — CADDO MESA WSC · 93 people · 2019 | 3/4 | SYR4 |
| Copper | 193.1 µg/L 15% of the EPA limit 1300 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2017
Highest in the city: 832.6 µg/L — CITY OF QUINLAN · 1,414 people · 2017 | 4/4 | SYR4 |
| Nitrate-Nitrite | 471.8 µg/L 4.7% of the EPA limit 10000 µg/L Highest in the city: WHISPERING OAKS WATER COOP · 141 people · 2015 | 2/4 | SYR4 |
| Nitrite | 452.9 µg/L 45% of the EPA limit 1000 µg/L Highest in the city: WHISPERING OAKS WATER COOP · 141 people · 2015 | 1/4 | SYR4 |
| Nitrate | 327 µg/L 3.3% of the EPA limit 10000 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 3/4 | SYR4 |
| Cyanide | 140.85 µg/L 70% of the EPA limit 200 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 72.18 µg/L 120% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| TTHM | 67.42 µg/L 84% of the EPA limit 80 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Chloroform | 61.84 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Dichloroacetic Acid | 60.36 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Barium | 59.45 µg/L 3% of the EPA limit 2000 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 3/4 | SYR4 |
| Trichloroacetic Acid | 27.86 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Bromodichloromethane | 16.656 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019
Highest in the city: 24.16 µg/L — CITY OF QUINLAN · 1,414 people · 2019 | 2/4 | SYR4 |
| Bromoform | 17.931 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 3/4 | SYR4 |
| Dibromochloromethane | 2.775 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019
Highest in the city: 14.23 µg/L — CITY OF QUINLAN · 1,414 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 10.085 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 4.96 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019
Highest in the city: 8.225 µg/L — CITY OF QUINLAN · 1,414 people · 2019 | 2/4 | SYR4 |
| Lead | 7.05 µg/L 47% of the EPA limit 15 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2017
Highest in the city: 7.9295 µg/L — CITY OF QUINLAN · 1,414 people · 2017 | 4/4 | SYR4 |
| Monobromoacetic Acid | 5.44 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 2/4 | SYR4 |
| Chromium | 1.212 µg/L 1.2% of the EPA limit 100 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019
Highest in the city: 5.15 µg/L — CADDO MESA WSC · 93 people · 2019 | 3/4 | SYR4 |
| Combined Radium (-226 And -228) | 2 pCi/L 40% of the EPA limit 5 pCi/L Highest in the city: WHISPERING OAKS WATER COOP · 141 people · 2012 | 2/4 | SYR4 |
| Arsenic | 1.595 µg/L 16% of the EPA limit 10 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 1/4 | SYR4 |
| Selenium | 1.26 µg/L 2.5% of the EPA limit 50 µg/L Highest in the city: WHISPERING OAKS WATER COOP · 141 people · 2018 | 1/4 | SYR4 |
| Antimony, Total | 0.5490 µg/L 9.2% of the EPA limit 6 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 1/4 | SYR4 |
| Atrazine | 0.5360 µg/L 18% of the EPA limit 3 µg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0106 mg/L 71% of the EPA limit 0.0150 mg/L Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2024 | 4/4 | LCR |
| Pfba | 0.0080 µg/L No EPA limit set Main supplier: COMBINED CONSUMERS SUD · 9,087 people · 2025 | 1/4 | UCMR-5 |
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 Quinlan
| Supplier | Population served |
|---|---|
| COMBINED CONSUMERS SUD | 9,087 |
| CITY OF QUINLAN | 1,414 |
| WHISPERING OAKS WATER COOP | 141 |
| CADDO MESA WSC | 93 |
Frequently asked questions about Quinlan tap water
Is Quinlan tap water safe to drink?
EPA testing detected 27 contaminants in the water serving Quinlan. 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 Quinlan?
4 public water suppliers report drinking-water monitoring for Quinlan, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Quinlan's water?
The contaminants EPA monitoring detected in Quinlan include Fluoride, Copper, Nitrate-Nitrite, Nitrite, Nitrate. 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.