What was found in Como'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 | 341.6 µg/L 8.5% of the EPA limit 4000 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2018
Highest in the city: 565 µg/L — CITY OF COMO · 702 people · 2018 | 2/2 | SYR4 |
| Copper | 409 µg/L 31% of the EPA limit 1300 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2017
Highest in the city: 555.65 µg/L — CITY OF COMO · 702 people · 2017 | 2/2 | SYR4 |
| Barium | 83.8 µg/L 4.2% of the EPA limit 2000 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019
Highest in the city: 128.4 µg/L — CITY OF COMO · 702 people · 2018 | 2/2 | SYR4 |
| TTHM | 71.275 µg/L 89% of the EPA limit 80 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019
Highest in the city: 71.9 µg/L — CITY OF COMO · 702 people · 2019 | 2/2 | SYR4 |
| Nitrate | 63.5 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 57.65 µg/L 0.6% of the EPA limit 10000 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 40.59 µg/L 0.4% of the EPA limit 10000 µg/L Highest in the city: CITY OF COMO · 702 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 31.12 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019
Highest in the city: 40.04 µg/L — CITY OF COMO · 702 people · 2019 | 2/2 | SYR4 |
| Bromoform | 28.22 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019
Highest in the city: 36.75 µg/L — CITY OF COMO · 702 people · 2019 | 2/2 | SYR4 |
| Nitrite | 29.1 µg/L 2.9% of the EPA limit 1000 µg/L Highest in the city: CITY OF COMO · 702 people · 2019 | 1/2 | SYR4 |
| Cyanide | 26 µg/L 13% of the EPA limit 200 µg/L Highest in the city: CITY OF COMO · 702 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 25.98 µg/L 43% of the EPA limit 60 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Lithium | 25.2 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2025 | 1/2 | UCMR-5 |
| Bromodichloromethane | 18.44 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 14 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 9.41 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Chloroform | 8.96 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Ethylbenzene | 5.1785 µg/L 0.7% of the EPA limit 700 µg/L Highest in the city: CITY OF COMO · 702 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.16 pCi/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2018 | 1/2 | SYR4 |
| Trichloroacetic Acid | 5.085 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 4.4 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Lead | 3.9 µg/L 26% of the EPA limit 15 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2017 | 2/2 | SYR4 |
| Selenium | 1.4 µg/L 2.8% of the EPA limit 50 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019
Highest in the city: 3.775 µg/L — CITY OF COMO · 702 people · 2018 | 2/2 | SYR4 |
| Dalapon | 2.03 µg/L 1% of the EPA limit 200 µg/L Highest in the city: CITY OF COMO · 702 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.01 pCi/L 40% of the EPA limit 5 pCi/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2015 | 2/2 | SYR4 |
| Chromium | 1.685 µg/L 1.7% of the EPA limit 100 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.7240 µg/L 36% of the EPA limit 2 µg/L Highest in the city: CITY OF COMO · 702 people · 2018 | 1/2 | SYR4 |
| Beryllium, Total | 0.6100 µg/L 15% of the EPA limit 4 µg/L Highest in the city: CITY OF COMO · 702 people · 2018 | 1/2 | SYR4 |
| Antimony, Total | 0.4300 µg/L 7.2% of the EPA limit 6 µg/L Main supplier: MARTIN SPRINGS WSC · 4,095 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0033 mg/L 22% of the EPA limit 0.0150 mg/L Main supplier: MARTIN SPRINGS WSC · 4,095 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 Como
| Supplier | Population served |
|---|---|
| MARTIN SPRINGS WSC | 4,095 |
| CITY OF COMO | 702 |
Frequently asked questions about Como tap water
Is Como tap water safe to drink?
EPA testing detected 31 contaminants in the water serving Como. 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 Como?
2 public water suppliers report drinking-water monitoring for Como, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Como's water?
The contaminants EPA monitoring detected in Como include Fluoride, Copper, Barium, TTHM, 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.