What was found in Monument'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 |
|---|---|---|---|
| Nitrate-Nitrite | 400 µg/L 4% of the EPA limit 10000 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2016
Highest in the city: 2210 µg/L — WALDEN WSD · 1,500 people · 2018 | 3/6 | SYR4 |
| Nitrate | 400 µg/L 4% of the EPA limit 10000 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 2195 µg/L — WALDEN WSD · 1,500 people · 2019 | 4/6 | SYR4 |
| Chloroform | 42.49 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 2000.42 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 4/6 | SYR4 |
| Fluoride | 1590 µg/L 40% of the EPA limit 4000 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 1650 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 5/6 | SYR4 |
| Bromodichloromethane | 31.02 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 1600.54 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 3/6 | SYR4 |
| Dibromochloromethane | 15.6 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 560.46 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 4/6 | SYR4 |
| Barium | 100 µg/L 5% of the EPA limit 2000 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 140.7 µg/L — PIONEER LOOKOUT WD · 120 people · 2019 | 5/6 | SYR4 |
| TTHM | 81.82 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 5/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 43.0045 µg/L 72% of the EPA limit 60 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 3/6 | SYR4 |
| Lithium | 31.8 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2025
Highest in the city: 36 µg/L — TRIVIEW MD · 5,737 people · 2025 | 3/6 | UCMR-5 |
| Dichloroacetic Acid | 22.44 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 2/6 | SYR4 |
| Selenium | 4.7 µg/L 9.4% of the EPA limit 50 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019
Highest in the city: 17.1 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 4/6 | SYR4 |
| Trichloroacetic Acid | 14.733 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 1/6 | SYR4 |
| Bromate | 11.34 µg/L 113% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2017 | 1/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.28 pCi/L 22% of the EPA limit 15 pCi/L Main supplier: WOODMOOR WSD · 18,031 people · 2018
Highest in the city: 8.41 pCi/L — MONUMENT TOWN OF · 5,740 people · 2019 | 5/6 | SYR4 |
| Combined Radium (-226 And -228) | 3.465 pCi/L 69% of the EPA limit 5 pCi/L Main supplier: WOODMOOR WSD · 18,031 people · 2018
Highest in the city: 6.625 pCi/L — MONUMENT TOWN OF · 5,740 people · 2019 | 5/6 | SYR4 |
| Arsenic | 4 µg/L 40% of the EPA limit 10 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 3/6 | SYR4 |
| Dibromoacetic Acid | 3.96 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 2/6 | SYR4 |
| Monochloroacetic Acid | 3.724 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 1/6 | SYR4 |
| Xylenes, Total | 2.8 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: MONUMENT TOWN OF · 5,740 people · 2019 | 1/6 | SYR4 |
| Combined Uranium | 1.56 µg/L 5.2% of the EPA limit 30 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2018
Highest in the city: 2.715 µg/L — MONUMENT TOWN OF · 5,740 people · 2019 | 3/6 | SYR4 |
| Bromoform | 2.18 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 4/6 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 4/6 | SYR4 |
| Monobromoacetic Acid | 1.76 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 1/6 | SYR4 |
| Dalapon | 1.2 µg/L 0.6% of the EPA limit 200 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 1/6 | SYR4 |
| Mercury | 0.2000 µg/L 10% of the EPA limit 2 µg/L Main supplier: WOODMOOR WSD · 18,031 people · 2019 | 1/6 | SYR4 |
| PFBS | 0.0033 µg/L No EPA limit set Main supplier: WOODMOOR WSD · 18,031 people · 2025 | 1/6 | UCMR-5 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: WOODMOOR WSD · 18,031 people · 2025 | 5/6 | 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 Monument
| Supplier | Population served |
|---|---|
| WOODMOOR WSD | 18,031 |
| MONUMENT TOWN OF | 5,740 |
| TRIVIEW MD | 5,737 |
| WALDEN WSD | 1,500 |
| MONUMENT MEADOW VILLAGE MHP | 250 |
| PIONEER LOOKOUT WD | 120 |
Frequently asked questions about Monument tap water
Is Monument tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Monument. 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 Monument?
6 public water suppliers report drinking-water monitoring for Monument, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Monument's water?
The contaminants EPA monitoring detected in Monument include Nitrate-Nitrite, Nitrate, Chloroform, Fluoride, Bromodichloromethane. 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.