Tap Water Quality Report
Tap water quality in DENTON, Texas
Tap water in DENTON, Texas receives a grade of C (79/100) from TapWaterSafety.org. It's served by CITY OF DENTON. 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. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in DENTON's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving 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.
EPA compliance record
Official U.S. EPA records for CITY OF DENTON (system ID TX0610002) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for DENTON
Filters matched to the specific contaminants in DENTON's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
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 DENTON'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 |
|---|---|---|---|---|---|---|---|---|
| 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, 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 CITY OF DENTON.