Water Quality Report · Updated May 12, 2026
CITY OF CARROLLTON
CITY OF CARROLLTON delivers tap water graded D (55/100) by TapWaterSafety.org. The utility serves approximately 136,170 residents in CARROLLTON, Texas using surface water (purchased). The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS)* significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline. For questions, the utility can be reached at 972-466-3001.
Is CARROLLTON tap water safe to drink?
CITY OF CARROLLTON delivers tap water that earns a grade of D (55/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 136,170 residents in CARROLLTON, drawing from surface water (purchased). Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to pfas contamination.
Public testing data identifies 19 contaminants in this water above EWG's health-based guidelines, including: Perfluorohexane sulfonate (PFHXS)*, Haloacetic acids (HAA9), Bromochloroacetic acid, Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Bromodichloromethane, Dibromoacetic acid, Dichloroacetic acid, Dibromochloromethane, Bromate*, Chromium (hexavalent), Perfluorooctanoic acid (PFOA)*, Chloroform, Trichloroacetic acid, Nitrate and nitrite, Nitrate, Perfluorooctane sulfonate (PFOS)*, Bromoform, Atrazine*. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for CARROLLTON residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CITY OF CARROLLTON.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS)*, Perfluorooctanoic acid (PFOA)* 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 0.867 ppt, 867x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 23.0 ppb, 384x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 4.07 ppb, 203x above the EWG health guideline of 0.02 ppb.
Contact CITY OF CARROLLTON
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for CARROLLTON
Filters matched to the specific contaminants in this 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.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 55/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS)* PFAS |
0.867 ppt | 0.001 | 10.0 | — | — | — | — | 867× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
23.0 ppb | 0.06 | — | — | — | — | — | 384× over |
| Bromochloroacetic acid Disinfection byproduct |
4.07 ppb | 0.02 | — | — | — | — | — | 203× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
14.4 ppb | 0.1 | 60.0 | 60 | — | — | — | 144× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
16.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 106× over |
| Bromodichloromethane Disinfection byproduct |
5.12 ppb | 0.06 | — | — | — | — | — | 85× over |
| Dibromoacetic acid Disinfection byproduct |
1.66 ppb | 0.03 | — | — | — | — | — | 55× over |
| Dichloroacetic acid Disinfection byproduct |
9.14 ppb | 0.2 | — | — | — | — | — | 46× over |
| Dibromochloromethane Disinfection byproduct |
3.74 ppb | 0.1 | — | — | — | — | — | 37× over |
| Bromate* Disinfection byproduct |
2.38 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 24× over |
| Chromium (hexavalent) Heavy metal |
0.394 ppb | 0.02 | — | — | — | — | — | 20× over |
| Perfluorooctanoic acid (PFOA)* PFAS |
1.6 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 18× over |
| Chloroform Disinfection byproduct |
6.36 ppb | 0.4 | — | — | — | — | — | 16× over |
| Trichloroacetic acid Disinfection byproduct |
1.36 ppb | 0.1 | — | — | — | — | — | 14× over |
| Nitrate and nitrite Inorganic |
1.31 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 9.4× over |
| Nitrate Inorganic |
0.978 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.0× over |
| Perfluorooctane sulfonate (PFOS)* PFAS |
0.792 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.6× over |
| Bromoform Disinfection byproduct |
0.732 ppb | 0.5 | — | — | — | — | — | 1.5× over |
| Atrazine* Pesticide/Herbicide |
0.111 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Simazine* Pesticide/Herbicide |
0.0844 ppb | 0.1 | 4.0 | — | — | — | — | Below guideline |
| Manganese Heavy metal |
5.76 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Barium* Heavy metal |
31.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
1.53 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
2.02 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Chlorate Disinfection byproduct |
6.26 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Aluminum* Heavy metal |
11.4 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.21 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
6.93 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
4.4 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
3.97 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS)* PFAS |
4.67 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.0288 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA)* PFAS |
1.32 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.286 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.328 ppt | — | — | — | — | — | — | Below guideline |
| Acetone* Other |
6.38 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total)* Heavy metal |
0.544 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Cyanide* Inorganic |
95.5 ppb | — | 200.0 | 50 | 70 | 150 | — | Fails EU |
| Fluoride* Inorganic |
0.651 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0381 ppb | — | — | — | — | — | — | Below guideline |
| Nitrite Inorganic |
0.224 ppm | — | 1.0 | — | — | — | — | 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CITY OF CARROLLTON service area
This water system serves 1 community in Dallas County, Texas. Click any city for its dedicated tap water quality page.
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