What was found in Lancaster'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 | 1852.5 µg/L 46% of the EPA limit 4000 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2017 | 1/2 | SYR4 |
| Copper | 456.5 µg/L 35% of the EPA limit 1300 µg/L Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Nitrate | 250 µg/L 2.5% of the EPA limit 10000 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 92.5 µg/L 0.9% of the EPA limit 10000 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2015 | 1/2 | SYR4 |
| TTHM | 21.55 µg/L 27% of the EPA limit 80 µg/L Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 19.85 µg/L 33% of the EPA limit 60 µg/L Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 13.975 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 1/2 | SYR4 |
| Chloroform | 12.05 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 8.7 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Barium | 7.07 µg/L 0.4% of the EPA limit 2000 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 6.215 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 5.9355 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Bromoform | 2.2675 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019
Highest in the city: 4.012 µg/L — PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 4 pCi/L No EPA limit set Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2018 | 1/2 | SYR4 |
| Chromium | 3.18415 µg/L 3.2% of the EPA limit 100 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2019 | 1/2 | SYR4 |
| Lead | 2.6 µg/L 17% of the EPA limit 15 µg/L Main supplier: CITY OF LANCASTER · 40,449 people · 2019
Highest in the city: 2.765 µg/L — PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2018 | 2/2 | SYR4 |
| Trichloroacetic Acid | 2.7 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 2.4 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.57 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2012 | 1/2 | SYR4 |
| Styrene | 0.7690 µg/L 0.8% of the EPA limit 100 µg/L Highest in the city: PARKERVILLE EAST MOBILE HOME PARK · 42 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0137 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2024 | 1/2 | UCMR-5 |
| Pfpea | 0.0076 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2024 | 1/2 | UCMR-5 |
| Pfhxa | 0.0071 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2024 | 1/2 | UCMR-5 |
| PFBS | 0.0062 µg/L No EPA limit set Main supplier: CITY OF LANCASTER · 40,449 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF LANCASTER · 40,449 people · 2025 | 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 Lancaster
| Supplier | Population served |
|---|---|
| CITY OF LANCASTER | 40,449 |
| PARKERVILLE EAST MOBILE HOME PARK | 42 |
Frequently asked questions about Lancaster tap water
Is Lancaster tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Lancaster. 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 Lancaster?
2 public water suppliers report drinking-water monitoring for Lancaster, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Lancaster's water?
The contaminants EPA monitoring detected in Lancaster include Fluoride, Copper, Nitrate, Nitrate-Nitrite, 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.