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Tap water quality report

Richardson, TX

EPA monitoring detected 18 contaminants across the 1 water supplier serving Richardson. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

1
water supplier
122,615
people served
18
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Richardson's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
898 µg/L 69%
of the EPA limit 1300 µg/L
 1/1 SYR4
TTHM
67.7 µg/L 85%
of the EPA limit 80 µg/L
 1/1 SYR4
Total Haloacetic Acids (HAA5)
48.7 µg/L 81%
of the EPA limit 60 µg/L
 1/1 SYR4
Lead
45.89 µg/L 306%
of the EPA limit, in the worst sample — 15 µg/L
 1/1 SYR4
Bromodichloromethane
34.2 µg/L
No EPA limit set
 1/1 SYR4
Dichloroacetic Acid
32 µg/L
No EPA limit set
 1/1 SYR4
Chloroform
29.8 µg/L
No EPA limit set
 1/1 SYR4
Dibromochloromethane
19.2 µg/L
No EPA limit set
 1/1 SYR4
Dibromoacetic Acid
11.2 µg/L
No EPA limit set
 1/1 SYR4
Monochloroacetic Acid
10.5 µg/L
No EPA limit set
 1/1 SYR4
Trichloroacetic Acid
9.8 µg/L
No EPA limit set
 1/1 SYR4
Monobromoacetic Acid
7.5 µg/L
No EPA limit set
 1/1 SYR4
Bromoform
6 µg/L
No EPA limit set
 1/1 SYR4
Pfba
0.0098 µg/L
No EPA limit set
 1/1 UCMR-5
Pfpea
0.0082 µg/L
No EPA limit set
 1/1 UCMR-5
Pfhxa
0.0067 µg/L
No EPA limit set
 1/1 UCMR-5
PFBS
0.0052 µg/L
No EPA limit set
 1/1 UCMR-5
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 1/1 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Richardson

SupplierPopulation served
CITY OF RICHARDSON 122,615

Frequently asked questions about Richardson tap water

Is Richardson tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Richardson. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Richardson?

1 public water supplier report drinking-water monitoring for Richardson, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Richardson's water?

The contaminants EPA monitoring detected in Richardson include Copper, TTHM, Total Haloacetic Acids (HAA5), Lead, Bromodichloromethane. The full list, with the highest level found and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.