2025 report; 2024 PFAS/lead; 2022 hardness guidance
Grand Prairie extends into Dallas, Tarrant and Ellis counties. This city-specific utility report follows the supplier on your bill rather than assigning Dallas Water Utilities’ results to every address.
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
170ppm as CaCO₃ · 2022 guidance
Approximately 9.9 grains per gallon. This historical figure is not a 2025 measurement; confirm today’s hardness before selecting or programming a softener.
2.95ppm
Average; range 0.60–4.70
44.7ppb
Highest locational annual average
30.3ppb
Highest locational annual average
Varies by supplier
Purchased-water tables; not one citywide tap value
See the utility’s supplier tables; do not average different systems.
1.2ppb
90th percentile; 3 of 50 sites over 15 ppb
Maximum sample: 75.1 ppb. Check home plumbing and test your tap.
20ppt
Reported average; range 4.1–82
Historical monitoring, not a current compliance determination.
1.15ppm
Maximum; range 0.034–1.15
Continue with your home details for general filtration guidance. We will not use another utility’s numbers as your result.
Find My Water System →A city report cannot establish a well’s water quality. Well-water treatment depends on your test results and site conditions.
Explore well-water systems →Selected useful results—not a replacement for the utility’s complete report. Older measurements retain their original year.
Open the complete utility report ↗
| What was measured | Reported amount | Sample year / source date | How to read it |
|---|---|---|---|
| Hardness | 170 ppm as CaCO₃ · 2022 guidance | 2022 utility report; older guidance | Hard — older utility figureApproximately 9.9 grains per gallon. This historical figure is not a 2025 measurement; confirm today’s hardness before selecting or programming a softener. |
| Chloramine | 2.95 ppmAverage; range 0.60–4.70 | 2025 | Average below 4 ppm MRDL |
| TTHMs | 44.7 ppbHighest locational annual average | 2025 | Below 80 ppb MCL |
| HAA5 | 30.3 ppbHighest locational annual average | 2025 | Below 60 ppb MCL |
| Fluoride | Varies by supplier Purchased-water tables; not one citywide tap value | 2025 report | No single citywide high/low valueSee the utility’s supplier tables; do not average different systems. |
| Lead | 1.2 ppb90th percentile; 3 of 50 sites over 15 ppb | 2024 | System percentile below AL; some taps aboveMaximum sample: 75.1 ppb. Check home plumbing and test your tap. |
| PFAS — PFOS | 20 pptReported average; range 4.1–82 | 2024 | Above 4 ppt EPA comparisonHistorical monitoring, not a current compliance determination. |
| Nitrate as nitrogen | 1.15 ppmMaximum; range 0.034–1.15 | 2025 | Below 10 ppm MCL |
| PFAS — PFOA | 4.5 pptReported average; range 4.1–4.9 | 2024 | Above 4 ppt EPA comparisonCheck current results and exact treatment claims. |
| PFAS — PFHxS | 3.3 pptReported average; detected range 3.3–3.3 | 2024 | Compound-specific review neededFederal PFAS rule changes are being considered; see EPA. |
| Copper | 0.253 ppm90th percentile; 0 sites over action level | 2024 | Below 1.3 ppm action level |
| Nitrite | 0.374 ppmReported maximum | 2024 | Below 1 ppm MCL |
ppm ≈ mg/L; ppb ≈ µg/L; ppt ≈ ng/L in drinking water. Hardness in gpg = mg/L as CaCO₃ ÷ 17.1. ND means not detected at the method’s reporting limit—not zero.
MCL is a maximum contaminant level. MRDL is a disinfectant limit. Lead/copper action levels use system sampling percentiles and are not a safe-tap threshold. TTHM/HAA5 compliance uses locational annual averages.
PFOA/PFOS comparisons use EPA’s 4 ppt values. Historical detections are not a present compliance finding; EPA assesses compliance using running annual averages. Rule implementation is being reviewed. EPA PFAS benchmarks and implementation ↗
Choose the system size, keep useful existing equipment, and review your filtration goals.
Source water. Grand Prairie buys treated water from multiple suppliers and may use groundwater wells as demand requires. Use Grand Prairie distribution results for disinfectants and byproducts.
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More about your local water
A city-specific report across county boundaries.
Grand Prairie spans Dallas, Tarrant and Ellis counties. This page sits under the Dallas County hub for navigation, while using Grand Prairie utility results for matching customers in any of those counties. The county link does not define the water service boundary.
A useful local question
Yes. Grand Prairie reported a 1.2 ppb 90th percentile for 2024, while 3 of 50 sites exceeded the 15 ppb action level. Test your own tap if lead is a concern; the city percentile cannot identify your home’s result.
We keep each utility’s results separate, show the reported sample year, and distinguish averages, maxima and tap-sampling percentiles. Hardness classifications use USGS ranges. Missing data stays unknown.
Sources checked October 22, 2026
Your water → your home → your system
Choose the system size, keep useful existing equipment, and review your filtration goals.