← Thornton, CO

Tap water quality report

ZIP 80260 — Thornton, CO

EPA monitoring across the 3 water suppliers serving ZIP 80260 in Thornton, CO detected 40 contaminants. A detection doesn't automatically mean the water is unsafe — see the highest level found below, with the EPA limit for each.

3
water suppliers
287,070
people served
40
contaminants found

What was found in ZIP 80260

The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
1200 µg/L 12%
of the EPA limit 10000 µg/L
1/3 SYR4
Nitrate
1160 µg/L 12%
of the EPA limit 10000 µg/L
2/3 SYR4
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
3/3 SYR4
Nitrite
650 µg/L 65%
of the EPA limit 1000 µg/L
1/3 SYR4
TTHM
78.14 µg/L 98%
of the EPA limit 80 µg/L
3/3 SYR4
Barium
54 µg/L 2.7%
of the EPA limit 2000 µg/L
3/3 SYR4
Total Haloacetic Acids (HAA5)
48.2 µg/L 80%
of the EPA limit 60 µg/L
3/3 SYR4
Lithium
34.2 µg/L
No EPA limit set
3/3 UCMR-5
Chloroform
27 µg/L
No EPA limit set
3/3 SYR4
Bromodichloromethane
25.4 µg/L
No EPA limit set
3/3 SYR4
Dibromochloromethane
18.8 µg/L
No EPA limit set
3/3 SYR4
Dichloroacetic Acid
16.1 µg/L
No EPA limit set
3/3 SYR4
Trichloroacetic Acid
10 µg/L
No EPA limit set
3/3 SYR4
Bromoform
7.5 µg/L
No EPA limit set
3/3 SYR4
Combined Uranium
7.4 µg/L 25%
of the EPA limit 30 µg/L
3/3 SYR4
Monochloroacetic Acid
6.7 µg/L
No EPA limit set
2/3 SYR4
Gross Beta Particle Activity
5.86 pCi/L
No EPA limit set
2/3 SYR4
Dibromoacetic Acid
5.64 µg/L
No EPA limit set
3/3 SYR4
Monobromoacetic Acid
4.58 µg/L
No EPA limit set
3/3 SYR4
Gross Alpha, Excl. Radon And U
2.7 pCi/L 18%
of the EPA limit 15 pCi/L
2/3 SYR4
Combined Radium (-226 And -228)
2.5 pCi/L 50%
of the EPA limit 5 pCi/L
3/3 SYR4
Chromium
1.8 µg/L 1.8%
of the EPA limit 100 µg/L
2/3 SYR4
Bromate
1.6 µg/L 16%
of the EPA limit 10 µg/L
1/3 SYR4
Arsenic
0.9300 µg/L 9.3%
of the EPA limit 10 µg/L
2/3 SYR4
Styrene
0.6590 µg/L 0.7%
of the EPA limit 100 µg/L
1/3 SYR4
1,1,1-Trichloroethane
0.5630 µg/L 0.3%
of the EPA limit 200 µg/L
1/3 SYR4
Carbon Tetrachloride
0.5330 µg/L 11%
of the EPA limit 5 µg/L
1/3 SYR4
Selenium
0.5000 µg/L 1%
of the EPA limit 50 µg/L
2/3 SYR4
Antimony, Total
0.2700 µg/L 4.5%
of the EPA limit 6 µg/L
2/3 SYR4
Bhc-Gamma
0.0760 µg/L 38%
of the EPA limit 0.2000 µg/L
1/3 SYR4
Thallium, Total
0.0400 µg/L 2%
of the EPA limit 2 µg/L
1/3 SYR4
Pfhxa
0.0126 µg/L
No EPA limit set
1/3 UCMR-5
Pfpea
0.0124 µg/L
No EPA limit set
1/3 UCMR-5
Pfba
0.0104 µg/L
No EPA limit set
1/3 UCMR-5
PFBS
0.0081 µg/L
No EPA limit set
1/3 UCMR-5
PFOA
0.0071 µg/L
No EPA limit set
1/3 UCMR-5
PFHXS
0.0059 µg/L
No EPA limit set
1/3 UCMR-5
PFOS
0.0050 µg/L
No EPA limit set
1/3 UCMR-5
Pfhpa
0.0037 µg/L
No EPA limit set
1/3 UCMR-5
Lead
0.0023 mg/L 15%
of the EPA limit 0.0150 mg/L
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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 80260

SupplierStatePopulation served
THORNTON CITY OF CO 226,465
NORTHGLENN CITY OF CO 48,927
FEDERAL HEIGHTS CITY OF CO 11,678

Frequently asked questions about ZIP 80260 tap water

Is the tap water in ZIP 80260 safe to drink?

EPA testing detected 40 contaminants across the water suppliers serving ZIP 80260. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 80260?

3 public water suppliers report EPA drinking-water monitoring for ZIP 80260. Each is listed above with its population served.

What contaminants are in ZIP 80260's water?

EPA monitoring detected Nitrate-Nitrite, Nitrate, Fluoride, Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.