Tap Water Quality Report
Tap water quality in BRIGHTON, Colorado
Tap water in BRIGHTON, Colorado receives a grade of F (48/100) from TapWaterSafety.org. It's served by BRIGHTON CITY OF. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in BRIGHTON's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving BRIGHTON.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 4.22 ppt, 4217x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 35.0 ppb, 583x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 54.0 ppb, 360x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 1.0 ppb.
Recommended filters for BRIGHTON
Filters matched to the specific contaminants in BRIGHTON's water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in BRIGHTON's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) PFAS |
6.39 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | EPA violation |
| Perfluorooctane sulfonate (PFOS) PFAS |
10.6 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
4.22 ppt | 0.001 | 10.0 | — | — | — | — | 4217× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
35.0 ppb | 0.06 | — | — | — | — | — | 583× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
54.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 360× over |
| Bromodichloromethane Disinfection byproduct |
17.0 ppb | 0.06 | — | — | — | — | — | 283× over |
| Arsenic Heavy metal |
1.0 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 250× over |
| Dibromoacetic acid Disinfection byproduct |
5.77 ppb | 0.03 | — | — | — | — | — | 192× over |
| Dibromochloromethane Disinfection byproduct |
18.8 ppb | 0.1 | — | — | — | — | — | 188× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
15.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 154× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.879 ppt | 0.006 | 10.0 | — | — | — | — | 147× over |
| Perfluorodecanoic acid (PFDA) PFAS |
0.295 ppt | 0.006 | — | — | — | — | — | 49× over |
| Dichloroacetic acid Disinfection byproduct |
5.84 ppb | 0.2 | — | — | — | — | — | 29× over |
| Nitrate Inorganic |
3.97 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 28× over |
| Chloroform Disinfection byproduct |
10.2 ppb | 0.4 | — | — | — | — | — | 26× over |
| Trichloroacetic acid Disinfection byproduct |
2.25 ppb | 0.1 | — | — | — | — | — | 22× over |
| Bromoform Disinfection byproduct |
7.97 ppb | 0.5 | — | — | — | — | — | 16× over |
| Chromium (hexavalent) Heavy metal |
0.257 ppb | 0.02 | — | — | — | — | — | 13× over |
| Perfluorotetradecanoic acid (PFTA) PFAS |
0.018 ppt | 0.006 | — | — | — | — | — | 3.0× over |
| Chlorate Disinfection byproduct |
287.7 ppb | 210.0 | — | — | — | — | — | 1.4× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.0989 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| N-ethyl perfluorooctane sulfonamido acetic acid (N-EtFOSAA) PFAS |
0.26 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Selenium Heavy metal |
3.33 ppb | 30.0 | 50.0 | 20 | 40 | 30 | — | Below guideline |
| Molybdenum Other |
3.5 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
1.34 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
4.65 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Barium Heavy metal |
29.5 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
11.6 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.242 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
6.22 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
4.76 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
8.47 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.186 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
3.23 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.993 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Strontium Radiological |
0.5 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 1-Butanol Other |
0.79 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
1.67 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.693 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
22.4 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from BRIGHTON CITY OF.