Tap WaterIndex

← Colorado

Tap water quality report

Frisco, CO

EPA monitoring detected 24 contaminants across the 3 water suppliers serving Frisco. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

3
water suppliers
4,694
people served
24
contaminants found
Colorado rankings Lead in Colorado PFAS in Colorado

What was found in Frisco'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.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
600 µg/L 6%
of the EPA limit 10000 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
Highest in the city: 3055 µg/L — FARMERS KORNER MHP · 159 people · 2014
3/3 SYR4
Nitrate
910 µg/L 9.1%
of the EPA limit 10000 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
Highest in the city: 2605 µg/L — FARMERS KORNER MHP · 159 people · 2019
3/3 SYR4
Fluoride
816 µg/L 20%
of the EPA limit 4000 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Barium
84.85 µg/L 4.2%
of the EPA limit 2000 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
Highest in the city: 115.75 µg/L — FARMERS KORNER MHP · 159 people · 2019
2/3 SYR4
Total Haloacetic Acids (HAA5)
75.61 µg/L 126%
of the EPA limit, at the 95th percentile of samples — 60 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
TTHM
56.38 µg/L 70%
of the EPA limit 80 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Trichloroacetic Acid
48.2 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Chloroform
47.76 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Dichloroacetic Acid
32.605 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Selenium
5.5 µg/L 11%
of the EPA limit 50 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
2/3 SYR4
Bromodichloromethane
4.265 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Monochloroacetic Acid
3.7 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Monobromoacetic Acid
3.2 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Dibromochloromethane
3.085 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
2/3 SYR4
Combined Uranium
2.65 µg/L 8.8%
of the EPA limit 30 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Combined Radium (-226 And -228)
2.43 pCi/L 49%
of the EPA limit 5 pCi/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
2/3 SYR4
Gross Alpha, Excl. Radon And U
2.171 pCi/L 14%
of the EPA limit 15 pCi/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
2/3 SYR4
Dibromoacetic Acid
1.86 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Bromoform
1.004 µg/L
No EPA limit set
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Diquat
0.3500 µg/L 1.7%
of the EPA limit 20 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Ethylene Dibromide
0.0385 µg/L 77%
of the EPA limit 0.0500 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Hexachlorobenzene
0.0093 µg/L 0.9%
of the EPA limit 1 µg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2019
1/3 SYR4
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
Main supplier: FRISCO TOWN OF · 4,495 people · 2025
Highest in the city: 0.0085 mg/L — WAYSIDE · 40 people · 2026
3/3 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 Frisco

SupplierPopulation served
FRISCO TOWN OF 4,495
FARMERS KORNER MHP 159
WAYSIDE 40

Frequently asked questions about Frisco tap water

Is Frisco tap water safe to drink?

EPA testing detected 24 contaminants in the water serving Frisco. 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 Frisco?

3 public water suppliers report drinking-water monitoring for Frisco, Colorado to the EPA. Each is listed above with its population served.

What contaminants are in Frisco's water?

The contaminants EPA monitoring detected in Frisco include Nitrate-Nitrite, Nitrate, Fluoride, Barium, Total Haloacetic Acids (HAA5). 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.