← Centennial, CO

Tap water quality report

ZIP 80015 — Centennial, CO

EPA monitoring across the 3 water suppliers serving ZIP 80015 in Centennial, CO detected 36 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

3
water suppliers
630,537
people served
36
contaminants found

What was found in ZIP 80015

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
1212.5 µg/L 12%
of the EPA limit 10000 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 1830 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Fluoride
974.5 µg/L 24%
of the EPA limit 4000 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 1483.5 µg/L — EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
3/3 SYR4
Nitrate-Nitrite
1167.5 µg/L 12%
of the EPA limit 10000 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 1325 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2015
3/3 SYR4
Chlorite
630 µg/L 63%
of the EPA limit 1000 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
1/3 SYR4
Barium
56.72 µg/L 2.8%
of the EPA limit 2000 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 291.1 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
TTHM
33.86 µg/L 42%
of the EPA limit 80 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 58.55 µg/L — EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
3/3 SYR4
Total Haloacetic Acids (HAA5)
31.815 µg/L 53%
of the EPA limit 60 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
3/3 SYR4
Lithium
21.4 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2024
Highest in the ZIP: 25.4 µg/L — EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2024
3/3 UCMR-5
Chloroform
24.175 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
3/3 SYR4
Dichloroacetic Acid
19.25 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
3/3 SYR4
Bromodichloromethane
8.92 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 18.69 µg/L — EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
3/3 SYR4
Bromoform
4.799 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 18.36 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Dibromochloromethane
10.2 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 17.04 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Combined Uranium
4.87 µg/L 16%
of the EPA limit 30 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2017
Highest in the ZIP: 15 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Trichloroacetic Acid
10.4 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
3/3 SYR4
Gross Alpha, Excl. Radon And U
0.8750 pCi/L 5.8%
of the EPA limit 15 pCi/L
Main supplier: AURORA CITY OF · 533,407 people · 2017
Highest in the ZIP: 10.2768 pCi/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Selenium
6.736 µg/L 13%
of the EPA limit 50 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 8.37 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Arsenic
1.46 µg/L 15%
of the EPA limit 10 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 6.95 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Dibromoacetic Acid
5.5675 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 6.74 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Combined Radium (-226 And -228)
3.89 pCi/L 78%
of the EPA limit 5 pCi/L
Main supplier: AURORA CITY OF · 533,407 people · 2017
Highest in the ZIP: 5.05 pCi/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
3/3 SYR4
Chromium
2.365 µg/L 2.4%
of the EPA limit 100 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
3/3 SYR4
Xylenes, Total
1.8 µg/L 0%
of the EPA limit 10000 µg/L
Highest in the ZIP: EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
1/3 SYR4
Monobromoacetic Acid
1.706 µg/L
No EPA limit set
Highest in the ZIP: EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
1/3 SYR4
Monochloroacetic Acid
1.224 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 1.42 µg/L — EAST CHERRY CREEK VALLEY WSD · 66,130 people · 2019
2/3 SYR4
Di(2-ethylhexyl) Adipate
1.4 µg/L 0.4%
of the EPA limit 400 µg/L
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2019
1/3 SYR4
Di(2-ethylhexyl) Phthalate
1.3 µg/L 22%
of the EPA limit 6 µg/L
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2019
1/3 SYR4
Antimony, Total
1.167 µg/L 19%
of the EPA limit 6 µg/L
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2019
1/3 SYR4
Cadmium
0.1162 µg/L 2.3%
of the EPA limit 5 µg/L
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2019
1/3 SYR4
Thallium, Total
0.0771 µg/L 3.9%
of the EPA limit 2 µg/L
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2019
1/3 SYR4
Mercury
0.0290 µg/L 1.5%
of the EPA limit 2 µg/L
Main supplier: AURORA CITY OF · 533,407 people · 2019
Highest in the ZIP: 0.0397 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2019
2/3 SYR4
Pfpea
0.0072 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2024
Highest in the ZIP: 0.0079 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2023
3/3 UCMR-5
Pfba
0.0078 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2024
3/3 UCMR-5
Pfhxa
0.0056 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2024
Highest in the ZIP: 0.0068 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2023
2/3 UCMR-5
PFBS
0.0033 µg/L
No EPA limit set
Main supplier: AURORA CITY OF · 533,407 people · 2024
Highest in the ZIP: 0.0061 µg/L — ARAPAHOE CNTY WWWA · 31,000 people · 2023
2/3 UCMR-5
PFOA
0.0046 µg/L
No EPA limit set
Highest in the ZIP: ARAPAHOE CNTY WWWA · 31,000 people · 2023
1/3 UCMR-5
Lead
0.0025 mg/L 17%
of the EPA limit 0.0150 mg/L
Main supplier: AURORA CITY OF · 533,407 people · 2025
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.

Water suppliers serving ZIP 80015

SupplierStatePopulation served
AURORA CITY OF CO 533,407
EAST CHERRY CREEK VALLEY WSD CO 66,130
ARAPAHOE CNTY WWWA CO 31,000

Frequently asked questions about ZIP 80015 tap water

Is the tap water in ZIP 80015 safe to drink?

EPA testing detected 36 contaminants across the water suppliers serving ZIP 80015. 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 80015?

3 public water suppliers report EPA drinking-water monitoring for ZIP 80015. Each is listed above with its population served.

What contaminants are in ZIP 80015's water?

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