Water Quality Report · Updated October 07, 2026
CITY OF DESOTO
CITY OF DESOTO delivers tap water graded D (60/100) by TapWaterSafety.org. The utility serves approximately 57,999 residents in DESOTO, 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 682-308-7005.
Is DESOTO tap water safe to drink?
CITY OF DESOTO delivers tap water that earns a grade of D (60/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 57,999 residents in DESOTO, 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, Total trihalomethanes (TTHMs), Bromodichloromethane, Dibromoacetic acid, Haloacetic acids (HAA5), Dibromochloromethane, Bromate*, Perfluorooctanoic acid (PFOA)*, Dichloroacetic acid, Chloroform, Chromium (hexavalent), Nitrate and nitrite, Nitrate, Bromoform, Perfluorooctane sulfonate (PFOS)*, Trichloroacetic acid, 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.
EPA compliance record
Official U.S. EPA records for CITY OF DESOTO (system ID TX0570006) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Public Notice Rule and Revised PN Rule | Other (e.g. public notice) | 01/01/2024 | Resolved |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for DESOTO 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 DESOTO.
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 11.6 ppb, 194x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 2.76 ppb, 138x above the EWG health guideline of 0.02 ppb.
Contact CITY OF DESOTO
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 DESOTO
Filters matched to the specific contaminants in this water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
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.
Score breakdown
This utility's overall score of 60/100 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 |
11.6 ppb | 0.06 | — | — | — | — | — | 194× over |
| Bromochloroacetic acid Disinfection byproduct |
2.76 ppb | 0.02 | — | — | — | — | — | 138× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
15.1 ppb | 0.15 | 80.0 | 100 | — | — | — | 101× over |
| Bromodichloromethane Disinfection byproduct |
4.84 ppb | 0.06 | — | — | — | — | — | 81× over |
| Dibromoacetic acid Disinfection byproduct |
1.7 ppb | 0.03 | — | — | — | — | — | 57× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
5.73 ppb | 0.1 | 60.0 | 60 | — | — | — | 57× over |
| Dibromochloromethane Disinfection byproduct |
4.96 ppb | 0.1 | — | — | — | — | — | 50× over |
| Bromate* Disinfection byproduct |
2.38 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 24× over |
| Perfluorooctanoic acid (PFOA)* PFAS |
1.6 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 18× over |
| Dichloroacetic acid Disinfection byproduct |
3.26 ppb | 0.2 | — | — | — | — | — | 16× over |
| Chloroform Disinfection byproduct |
3.46 ppb | 0.4 | — | — | — | — | — | 8.7× over |
| Chromium (hexavalent) Heavy metal |
0.151 ppb | 0.02 | — | — | — | — | — | 7.6× over |
| Nitrate and nitrite Inorganic |
0.666 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.8× over |
| Nitrate Inorganic |
0.583 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.2× over |
| Bromoform Disinfection byproduct |
1.86 ppb | 0.5 | — | — | — | — | — | 3.7× over |
| Perfluorooctane sulfonate (PFOS)* PFAS |
0.792 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.6× over |
| Trichloroacetic acid Disinfection byproduct |
0.16 ppb | 0.1 | — | — | — | — | — | 1.6× 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 |
8.54 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Chlorate Disinfection byproduct |
16.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium* Heavy metal |
31.1 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum* Other |
1.7 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Aluminum* Heavy metal |
11.4 ppb | 600.0 | — | 200 | — | 600 | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
12.2 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.583 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Vanadium* Other |
0.117 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
5.48 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
4.83 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
4.05 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA)* PFAS |
1.32 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0229 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.43 ppb | 1500.0 | — | — | — | — | — | 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 |
| Nitrite Inorganic |
0.0891 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 DESOTO service area
This water system serves 1 community in Dallas County, Texas. Click any city for its dedicated tap water quality page.
Find the right filter for DESOTO water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.