What was found in Midlothian'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 | 380.5 µg/L 9.5% of the EPA limit 4000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 1523 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 3/3 | SYR4 |
| Nitrate | 1094.7 µg/L 11% of the EPA limit 10000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Chlorite | 784.5 µg/L 78% of the EPA limit 1000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 1/3 | SYR4 |
| Copper | 245.75 µg/L 19% of the EPA limit 1300 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Lithium | 10.9 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024
Highest in the city: 179.5 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2025 | 3/3 | UCMR-5 |
| Cyanide | 155.1 µg/L 78% of the EPA limit 200 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| TTHM | 60.53 µg/L 76% of the EPA limit 80 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 99.82 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 87.1 µg/L 0.9% of the EPA limit 10000 µg/L Highest in the city: MOUNTAIN PEAK SUD · 23,988 people · 2015 | 2/3 | SYR4 |
| Barium | 58.7 µg/L 2.9% of the EPA limit 2000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 86.3 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 49.54 µg/L 83% of the EPA limit 60 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 57.475 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Nitrite | 51.5 µg/L 5.1% of the EPA limit 1000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2013 | 1/3 | SYR4 |
| Bromoform | 13.605 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 42.525 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 27.99 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 36.45 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Chloroform | 30.89 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 31.3 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 17.52 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 26.175 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 20.09 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 12.35 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 17.8 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Lead | 8.39 µg/L 56% of the EPA limit 15 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 17.4 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2017 | 3/3 | SYR4 |
| Chromium | 4.32 µg/L 4.3% of the EPA limit 100 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 14.96 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 13.985 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 9.805 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Gross Beta Particle Activity | 6.29 pCi/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 2/3 | SYR4 |
| Selenium | 2.987 µg/L 6% of the EPA limit 50 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 5.56 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 5.5 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 3/3 | SYR4 |
| Xylenes, Total | 0.8300 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 4.773 µg/L — SARDIS LONE ELM WSC · 20,736 people · 2019 | 2/3 | SYR4 |
| Arsenic | 1.864 µg/L 19% of the EPA limit 10 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 1.98 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Highest in the city: SARDIS LONE ELM WSC · 20,736 people · 2017 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.5857 µg/L 9.8% of the EPA limit 6 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 1.5 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2018 | 3/3 | SYR4 |
| Ethylbenzene | 0.8600 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: SARDIS LONE ELM WSC · 20,736 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.7270 µg/L 24% of the EPA limit 3 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 2/3 | SYR4 |
| Mercury | 0.5220 µg/L 26% of the EPA limit 2 µg/L Highest in the city: SARDIS LONE ELM WSC · 20,736 people · 2019 | 1/3 | SYR4 |
| Thallium, Total | 0.2765 µg/L 14% of the EPA limit 2 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019
Highest in the city: 0.3690 µg/L — MOUNTAIN PEAK SUD · 23,988 people · 2019 | 2/3 | SYR4 |
| Simazine | 0.3320 µg/L 8.3% of the EPA limit 4 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 2/3 | SYR4 |
| Antimony, Total | 0.2100 µg/L 3.5% of the EPA limit 6 µg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0124 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 3/3 | UCMR-5 |
| Pfpea | 0.0101 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 3/3 | UCMR-5 |
| Pfhxa | 0.0090 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 3/3 | UCMR-5 |
| PFOS | 0.0062 µg/L No EPA limit set Highest in the city: MOUNTAIN PEAK SUD · 23,988 people · 2024 | 1/3 | UCMR-5 |
| PFBS | 0.0049 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 3/3 | UCMR-5 |
| PFOA | 0.0048 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0017 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2025
Highest in the city: 0.0044 mg/L — SARDIS LONE ELM WSC · 20,736 people · 2023 | 3/3 | LCR |
| Pfhpa | 0.0039 µg/L No EPA limit set Main supplier: CITY OF MIDLOTHIAN · 27,699 people · 2024 | 1/3 | 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 Midlothian
| Supplier | Population served |
|---|---|
| CITY OF MIDLOTHIAN | 27,699 |
| MOUNTAIN PEAK SUD | 23,988 |
| SARDIS LONE ELM WSC | 20,736 |
Frequently asked questions about Midlothian tap water
Is Midlothian tap water safe to drink?
EPA testing detected 42 contaminants in the water serving Midlothian. 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 Midlothian?
3 public water suppliers report drinking-water monitoring for Midlothian, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Midlothian's water?
The contaminants EPA monitoring detected in Midlothian include Fluoride, Nitrate, Chlorite, Copper, Lithium. 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.