What was found in Silt'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 | 200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 18825 µg/L — ASGARD SUBDIVISION WA · 80 people · 2019 | 4/5 | SYR4 |
| Fluoride | 394.5 µg/L 9.9% of the EPA limit 4000 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 868 µg/L — PEACH VALLEY ORCHARD SUBD · 27 people · 2019 | 4/5 | SYR4 |
| Nitrate-Nitrite | 195 µg/L 2% of the EPA limit 10000 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2014
Highest in the city: 710 µg/L — MINEOTA ESTATES HOA · 105 people · 2014 | 3/5 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 152 µg/L — ASGARD SUBDIVISION WA · 80 people · 2019 | 4/5 | SYR4 |
| TTHM | 60 µg/L 75% of the EPA limit 80 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 92.4 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 4/5 | SYR4 |
| Barium | 55.65 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019 | 4/5 | SYR4 |
| Chloroform | 48.2 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019 | 3/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 20.118 µg/L 34% of the EPA limit 60 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 36.13 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 4/5 | SYR4 |
| Combined Uranium | 25.6 µg/L 85% of the EPA limit 30 µg/L Highest in the city: PEACH VALLEY ORCHARD SUBD · 27 people · 2019 | 3/5 | SYR4 |
| Dibromochloromethane | 6.3 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 25.25 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 4/5 | SYR4 |
| Trichloroacetic Acid | 15.72 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 21.8 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 3/5 | SYR4 |
| Bromodichloromethane | 20.32 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019 | 4/5 | SYR4 |
| Bromoform | 1.17 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 14 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 4/5 | SYR4 |
| Chromium | 4 µg/L 4% of the EPA limit 100 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 13 µg/L — MINEOTA ESTATES HOA · 105 people · 2017 | 2/5 | SYR4 |
| Dibromoacetic Acid | 2.479 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 10.57 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 3/5 | SYR4 |
| Monochloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019
Highest in the city: 9.73 µg/L — MINEOTA ESTATES HOA · 105 people · 2019 | 3/5 | SYR4 |
| Dichloroacetic Acid | 9.56 µg/L No EPA limit set Main supplier: SILT TOWN OF · 3,536 people · 2019 | 3/5 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.919 pCi/L 53% of the EPA limit 15 pCi/L Highest in the city: MINEOTA ESTATES HOA · 105 people · 2017 | 3/5 | SYR4 |
| Monobromoacetic Acid | 3.925 µg/L No EPA limit set Highest in the city: MINEOTA ESTATES HOA · 105 people · 2019 | 2/5 | SYR4 |
| Arsenic | 1.9 µg/L 19% of the EPA limit 10 µg/L Main supplier: SILT TOWN OF · 3,536 people · 2019 | 2/5 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L Highest in the city: ASGARD SUBDIVISION WA · 80 people · 2019 | 2/5 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.4565 µg/L 24% of the EPA limit 6 µg/L Highest in the city: MINEOTA ESTATES HOA · 105 people · 2019 | 1/5 | SYR4 |
| Hexachlorocyclopentadiene | 0.0760 µg/L 0.2% of the EPA limit 50 µg/L Highest in the city: MINEOTA ESTATES HOA · 105 people · 2017 | 1/5 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: SILT TOWN OF · 3,536 people · 2023
Highest in the city: 0.0040 mg/L — MINEOTA ESTATES HOA · 105 people · 2025 | 4/5 | 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 Silt
| Supplier | Population served |
|---|---|
| SILT TOWN OF | 3,536 |
| MINEOTA ESTATES HOA | 105 |
| ASGARD SUBDIVISION WA | 80 |
| WILLIAMS CREEK WATER | 60 |
| PEACH VALLEY ORCHARD SUBD | 27 |
Frequently asked questions about Silt tap water
Is Silt tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Silt. 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 Silt?
5 public water suppliers report drinking-water monitoring for Silt, Colorado to the EPA. Each is listed above with its population served.
What contaminants are in Silt's water?
The contaminants EPA monitoring detected in Silt include Nitrate, Fluoride, Nitrate-Nitrite, Selenium, 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.