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Tap water quality report

Plano, TX

EPA monitoring detected 18 contaminants across the 2 water suppliers serving Plano. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
292,155
people served
18
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Plano'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
1163.75 µg/L 90%
of the EPA limit 1300 µg/L
 2/2 SYR4
TTHM
64.4 µg/L 81%
of the EPA limit 80 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
51.5 µg/L 86%
of the EPA limit 60 µg/L
 2/2 SYR4
Dichloroacetic Acid
30.5 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
29.6 µg/L
No EPA limit set
 2/2 SYR4
Chloroform
27.7 µg/L
No EPA limit set
 2/2 SYR4
Lead
27.3 µg/L 182%
of the EPA limit, in the worst sample — 15 µg/L
 2/2 SYR4
Dibromoacetic Acid
20.6 µg/L
No EPA limit set
 2/2 SYR4
Dibromochloromethane
18.5 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
11.9 µg/L
No EPA limit set
 2/2 SYR4
Monochloroacetic Acid
10.9 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
10 µg/L
No EPA limit set
 2/2 SYR4
Monobromoacetic Acid
7.8 µg/L
No EPA limit set
 1/2 SYR4
Pfba
0.0073 µg/L
No EPA limit set
 1/2 UCMR-5
Pfhxa
0.0044 µg/L
No EPA limit set
 1/2 UCMR-5
Pfpea
0.0043 µg/L
No EPA limit set
 1/2 UCMR-5
PFBS
0.0031 µg/L
No EPA limit set
 1/2 UCMR-5
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 2/2 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 Plano

SupplierPopulation served
CITY OF PLANO 292,059
AIR PARK ESTATES 96

Frequently asked questions about Plano tap water

Is Plano tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Plano. 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 Plano?

2 public water suppliers report drinking-water monitoring for Plano, Texas to the EPA. Each is listed above with its population served.

What contaminants are in Plano's water?

The contaminants EPA monitoring detected in Plano include Copper, TTHM, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, 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.