What was found in Nathrop'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 | 1000 µg/L 25% of the EPA limit 4000 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2012
Highest in the city: 8925 µg/L — UTE HEIGHTS COMMUNITY WS · 69 people · 2019 | 3/4 | SYR4 |
| Nitrate | 500 µg/L 5% of the EPA limit 10000 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2019
Highest in the city: 1600 µg/L — CHATEAU CHAPARREL CG · 240 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 410 µg/L 4.1% of the EPA limit 10000 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2013
Highest in the city: 1000 µg/L — CHATEAU CHAPARREL CG · 240 people · 2014 | 2/4 | SYR4 |
| Barium | 11 µg/L 0.5% of the EPA limit 2000 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2012
Highest in the city: 54.1 µg/L — CHATEAU CHAPARREL CG · 240 people · 2017 | 3/4 | SYR4 |
| TTHM | 0.6400 µg/L 0.8% of the EPA limit 80 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2017
Highest in the city: 13.105 µg/L — UTE HEIGHTS COMMUNITY WS · 69 people · 2018 | 4/4 | SYR4 |
| Bromoform | 12.57 µg/L No EPA limit set Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2018 | 2/4 | SYR4 |
| Arsenic | 5.85 µg/L 59% of the EPA limit 10 µg/L Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2019 | 1/4 | SYR4 |
| Combined Uranium | 2.3 µg/L 7.7% of the EPA limit 30 µg/L Main supplier: MESA ANTERO SUBD · 250 people · 2015
Highest in the city: 5.3 µg/L — CHATEAU CHAPARREL CG · 240 people · 2018 | 2/4 | SYR4 |
| Chromium | 3 µg/L 3% of the EPA limit 100 µg/L Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2019 | 1/4 | SYR4 |
| Selenium | 2.95 µg/L 5.9% of the EPA limit 50 µg/L Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2019 | 1/4 | SYR4 |
| Dibromoacetic Acid | 2.485 µg/L No EPA limit set Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2018 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.485 µg/L 4.1% of the EPA limit 60 µg/L Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2018 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.659 pCi/L 11% of the EPA limit 15 pCi/L Main supplier: MESA ANTERO SUBD · 250 people · 2015 | 2/4 | SYR4 |
| Monochloroacetic Acid | 1.3 µg/L No EPA limit set Highest in the city: MT PRINCETON HOA · 79 people · 2017 | 1/4 | SYR4 |
| Dibromochloromethane | 1.2 µg/L No EPA limit set Highest in the city: CHATEAU CHAPARREL CG · 240 people · 2018 | 2/4 | SYR4 |
| Chloroform | 0.6400 µg/L No EPA limit set Main supplier: MESA ANTERO SUBD · 250 people · 2017
Highest in the city: 1 µg/L — MT PRINCETON HOA · 79 people · 2017 | 2/4 | SYR4 |
| Bromodichloromethane | 0.7800 µg/L No EPA limit set Highest in the city: CHATEAU CHAPARREL CG · 240 people · 2018 | 1/4 | SYR4 |
| Antimony, Total | 0.6700 µg/L 11% of the EPA limit 6 µg/L Highest in the city: CHATEAU CHAPARREL CG · 240 people · 2017 | 1/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6000 µg/L 10% of the EPA limit 6 µg/L Highest in the city: UTE HEIGHTS COMMUNITY WS · 69 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 0.5000 pCi/L 10% of the EPA limit 5 pCi/L Main supplier: MESA ANTERO SUBD · 250 people · 2015 | 1/4 | SYR4 |
| Lead | 0.0025 mg/L 17% of the EPA limit 0.0150 mg/L Main supplier: MESA ANTERO SUBD · 250 people · 2025 | 4/4 | 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 Nathrop
| Supplier | Population served |
|---|---|
| MESA ANTERO SUBD | 250 |
| CHATEAU CHAPARREL CG | 240 |
| MT PRINCETON HOA | 79 |
| UTE HEIGHTS COMMUNITY WS | 69 |
Frequently asked questions about Nathrop tap water
Is Nathrop tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Nathrop. 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 Nathrop?
4 public water suppliers report drinking-water monitoring for Nathrop, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Nathrop's water?
The contaminants EPA monitoring detected in Nathrop include Fluoride, Nitrate, Nitrate-Nitrite, Barium, 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.