Water Quality Report · Updated May 12, 2026
CITY OF DENTON
CITY OF DENTON delivers tap water graded C (67/100) by TapWaterSafety.org. The utility serves approximately 150,037 residents in DENTON, Texas using surface water. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Bromochloroacetic acid significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 940-349-7717.
Is DENTON tap water safe to drink?
CITY OF DENTON delivers tap water that earns a grade of C (67/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 150,037 residents in DENTON, drawing from surface water. Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to haloacetic acids (haa9) significantly above health guideline.
Public testing data identifies 13 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Bromochloroacetic acid, Total trihalomethanes (TTHMs), Bromodichloromethane, Dibromoacetic acid, Haloacetic acids (HAA5), Dibromochloromethane, Dichloroacetic acid, Bromate, Chloroform, Bromoform, Nitrate, 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 DENTON 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 DENTON.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 7.47 ppb, 125x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 2.23 ppb, 111x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 11.4 ppb, 76x above the EWG health guideline of 0.15 ppb.
Contact CITY OF DENTON
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 DENTON
Filters matched to the specific contaminants in this water supply.
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 67/100 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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
7.47 ppb | 0.06 | — | — | — | — | — | 125× over |
| Bromochloroacetic acid Disinfection byproduct |
2.23 ppb | 0.02 | — | — | — | — | — | 111× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
11.4 ppb | 0.15 | 80.0 | 100 | — | — | — | 76× over |
| Bromodichloromethane Disinfection byproduct |
3.36 ppb | 0.06 | — | — | — | — | — | 56× over |
| Dibromoacetic acid Disinfection byproduct |
1.69 ppb | 0.03 | — | — | — | — | — | 56× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
4.99 ppb | 0.1 | 60.0 | 60 | — | — | — | 50× over |
| Dibromochloromethane Disinfection byproduct |
4.04 ppb | 0.1 | — | — | — | — | — | 40× over |
| Dichloroacetic acid Disinfection byproduct |
2.86 ppb | 0.2 | — | — | — | — | — | 14× over |
| Bromate Disinfection byproduct |
1.04 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 10× over |
| Chloroform Disinfection byproduct |
2.13 ppb | 0.4 | — | — | — | — | — | 5.3× over |
| Bromoform Disinfection byproduct |
1.71 ppb | 0.5 | — | — | — | — | — | 3.4× over |
| Nitrate Inorganic |
0.335 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.4× over |
| Atrazine Pesticide/Herbicide |
0.117 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Fails EU |
| Chlorate Disinfection byproduct |
136.0 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Chromium (hexavalent) Heavy metal |
0.0116 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Simazine Pesticide/Herbicide |
0.02 ppb | 0.1 | 4.0 | — | — | — | — | Below guideline |
| Barium Heavy metal |
41.5 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
5.7 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Molybdenum Other |
1.14 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.373 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
5.99 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
2.58 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0604 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
2.34 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.48 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.262 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.183 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Cyanide Inorganic |
81.6 ppb | — | 200.0 | 50 | 70 | 150 | — | Fails EU |
| Fluoride Inorganic |
0.475 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
1.26 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CITY OF DENTON service area
This water system serves 1 community in Denton County, Texas. Click any city for its dedicated tap water quality page.
Find the right filter for DENTON water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.