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Tap water quality report

Stockdale, TX

EPA monitoring detected 19 contaminants across the 2 water suppliers serving Stockdale. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
6,265
people served
19
contaminants found
Texas rankings Lead in Texas PFAS in Texas

What was found in Stockdale's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Copper
260 µg/L 20%
of the EPA limit 1300 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2017
Highest in the city: 471 µg/L — CITY OF STOCKDALE · 1,201 people · 2017
2/2 SYR4
Fluoride
407 µg/L 10%
of the EPA limit 4000 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2017
2/2 SYR4
Barium
302.25 µg/L 15%
of the EPA limit 2000 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Lithium
64.3 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2024
1/2 UCMR-5
Lead
61.5 µg/L 410%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2017
2/2 SYR4
Nitrate
50 µg/L 0.5%
of the EPA limit 10000 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Nitrate-Nitrite
43.99999999999999 µg/L 0.4%
of the EPA limit 10000 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2015
2/2 SYR4
TTHM
35.629999999999995 µg/L 45%
of the EPA limit 80 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Bromoform
14.110000000000001 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Dibromochloromethane
11.890000000000002 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Gross Beta Particle Activity
9.549999999999999 pCi/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2018
2/2 SYR4
Bromodichloromethane
6.25 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
4.424999999999999 µg/L 7.4%
of the EPA limit 60 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Dibromoacetic Acid
3.065 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Chloroform
2.1999999999999997 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
Highest in the city: 2.42 µg/L — CITY OF STOCKDALE · 1,201 people · 2019
2/2 SYR4
Dichloroacetic Acid
1.55 µg/L
No EPA limit set
Main supplier: SUNKO WSC · 5,064 people · 2019
Highest in the city: 1.8499999999999999 µg/L — CITY OF STOCKDALE · 1,201 people · 2019
2/2 SYR4
Xylenes, Total
1.1 µg/L 0%
of the EPA limit 10000 µg/L
Main supplier: SUNKO WSC · 5,064 people · 2019
2/2 SYR4
Combined Radium (-226 And -228)
1 pCi/L 20%
of the EPA limit 5 pCi/L
Main supplier: SUNKO WSC · 5,064 people · 2012
1/2 SYR4
Lead
0.0011 mg/L 7.2%
of the EPA limit 0.0150 mg/L
Main supplier: SUNKO WSC · 5,064 people · 2024
Highest in the city: 0.0016 mg/L — CITY OF STOCKDALE · 1,201 people · 2023
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 95th percentile of the system's samples — 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 Stockdale

SupplierPopulation served
SUNKO WSC 5,064
CITY OF STOCKDALE 1,201

Frequently asked questions about Stockdale tap water

Is Stockdale tap water safe to drink?

EPA testing detected 19 contaminants in the water serving Stockdale. 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 Stockdale?

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

What contaminants are in Stockdale's water?

The contaminants EPA monitoring detected in Stockdale include Copper, Fluoride, Barium, Lithium, Lead. The full list, with the level at the main supplier 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.