Tap Water Quality Report
Tap water quality in GRAND PRAIRIE, Texas
Tap water in GRAND PRAIRIE, Texas receives a grade of D (66/100) from TapWaterSafety.org. It's served by CITY OF GRAND PRAIRIE. The most significant water quality concerns are: PFAS contamination; 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 GRAND PRAIRIE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving GRAND PRAIRIE.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 17.9 ppb, 299x above the EWG health guideline of 0.06 ppb.
Bromochloroacetic acid significantly above health guideline
Moderate concernBromochloroacetic acid detected at 4.24 ppb, 212x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 21.3 ppb, 142x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for CITY OF GRAND PRAIRIE (system ID TX0570048) 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 GRAND PRAIRIE
Filters matched to the specific contaminants in GRAND PRAIRIE's 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.
All contaminants detected in GRAND PRAIRIE'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 |
17.9 ppb | 0.06 | — | — | — | — | — | 299× over |
| Bromochloroacetic acid Disinfection byproduct |
4.24 ppb | 0.02 | — | — | — | — | — | 212× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
21.3 ppb | 0.15 | 80.0 | 100 | — | — | — | 142× over |
| Bromodichloromethane Disinfection byproduct |
6.67 ppb | 0.06 | — | — | — | — | — | 111× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
10.5 ppb | 0.1 | 60.0 | 60 | — | — | — | 105× over |
| Dibromoacetic acid Disinfection byproduct |
2.88 ppb | 0.03 | — | — | — | — | — | 96× over |
| Dibromochloromethane Disinfection byproduct |
6.4 ppb | 0.1 | — | — | — | — | — | 64× over |
| Radium, combined (-226 and -228) Radiological |
1.5 pCi/L | 0.05 | 5.0 | — | — | — | — | 30× over |
| Dichloroacetic acid Disinfection byproduct |
5.65 ppb | 0.2 | — | — | — | — | — | 28× over |
| Chloroform Disinfection byproduct |
5.69 ppb | 0.4 | — | — | — | — | — | 14× over |
| Chromium (hexavalent) Heavy metal |
0.179 ppb | 0.02 | — | — | — | — | — | 9.0× over |
| Trichloroacetic acid Disinfection byproduct |
0.659 ppb | 0.1 | — | — | — | — | — | 6.6× over |
| Bromoform Disinfection byproduct |
2.51 ppb | 0.5 | — | — | — | — | — | 5.0× over |
| Nitrate and nitrite Inorganic |
0.68 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.9× over |
| Nitrate Inorganic |
0.52 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.7× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.82 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 2.7× over |
| Bromochloromethane Other |
0.0842 ppb | 0.06 | — | — | — | — | — | 1.4× over |
| Chlorate Disinfection byproduct |
167.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.54 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.441 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.896 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.5 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
0.191 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
7.02 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
4.42 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
4.02 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
2.22 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.38 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione Other |
0.286 ppt | — | — | — | — | — | — | Below guideline |
| Germanium Other |
0.025 ppb | — | — | — | — | — | — | Below guideline |
| Nitrite Inorganic |
0.41 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, 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 GRAND PRAIRIE.