What was found in Pleasanton'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 | 485 µg/L 12% of the EPA limit 4000 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017
Highest in the city: 575 µg/L — MCCOY WSC · 9,621 people · 2017 | 2/2 | SYR4 |
| Copper | 301.39999999999986 µg/L 23% of the EPA limit 1300 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017
Highest in the city: 414.7499999999999 µg/L — MCCOY WSC · 9,621 people · 2017 | 2/2 | SYR4 |
| Barium | 235.5 µg/L 12% of the EPA limit 2000 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Lithium | 105.7 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2025 | 2/2 | UCMR-5 |
| TTHM | 25.959999999999994 µg/L 32% of the EPA limit 80 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 63.10000000000001 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Nitrate | 30 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 50 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Bromoform | 17.52 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 44.77499999999999 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 28 µg/L 0.3% of the EPA limit 10000 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 40 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 6.925 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 13.36 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 12.26 pCi/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Xylenes, Total | 12.159999999999997 µg/L 0.1% of the EPA limit 10000 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 8.82 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 1/2 | SYR4 |
| Dibromoacetic Acid | 4.649999999999999 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 7.68 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 6.399999999999989 µg/L 11% of the EPA limit 60 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019
Highest in the city: 7.68 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Selenium | 6.93 µg/L 14% of the EPA limit 50 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.749999999999999 pCi/L 45% of the EPA limit 15 pCi/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Chloroform | 5.824999999999999 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 1/2 | SYR4 |
| Lead | 5.5 µg/L 37% of the EPA limit 15 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 3.7399999999999998 pCi/L 75% of the EPA limit 5 pCi/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017 | 2/2 | SYR4 |
| Arsenic | 2.1 µg/L 21% of the EPA limit 10 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2017
Highest in the city: 3.3 µg/L — MCCOY WSC · 9,621 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 3.179999999999998 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 2.3 µg/L No EPA limit set Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 1/2 | SYR4 |
| Ethylbenzene | 1.5999999999999999 µg/L 0.2% of the EPA limit 700 µg/L Main supplier: CITY OF PLEASANTON · 17,985 people · 2019 | 1/2 | SYR4 |
| 6:2 Fts | 0.1190 µg/L No EPA limit set Highest in the city: MCCOY WSC · 9,621 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: CITY OF PLEASANTON · 17,985 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 Pleasanton
| Supplier | Population served |
|---|---|
| CITY OF PLEASANTON | 17,985 |
| MCCOY WSC | 9,621 |
Frequently asked questions about Pleasanton tap water
Is Pleasanton tap water safe to drink?
EPA testing detected 25 contaminants in the water serving Pleasanton. 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 Pleasanton?
2 public water suppliers report drinking-water monitoring for Pleasanton, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Pleasanton's water?
The contaminants EPA monitoring detected in Pleasanton include Fluoride, Copper, Barium, Lithium, TTHM. 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.