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Tap water quality report

City of Justin

EPA monitoring tested this supplier for 44 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
18
detected
7,537
people served
0
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Denton

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
27
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2024-12-11
Other Monitoring Resolved 2024-12-11
Other Monitoring Resolved 2023-12-31
Other Monitoring Resolved 2023-12-31
MR Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2023-10-01
MR Monitoring Resolved 2022-12-30
MR Monitoring Resolved 2022-12-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0116 µg/L 4/4 2024
Pfpea 0.0066 µg/L 4/4 2024
Pfhxa 0.0052 µg/L 3/4 2024
PFBS 0.0036 µg/L 2/4 2024

Other contaminants detected

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 this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Total Haloacetic Acids (HAA5)
22.775 µg/L 38%
of the EPA limit 60 µg/L
worst single sample: 31.7 µg/L
60/66 SYR4 2012–2019
Dibromochloromethane
12.26 µg/L
No EPA limit set
worst single sample: 24.5 µg/L
58/76 SYR4 2012–2019
Bromodichloromethane
15.57 µg/L
No EPA limit set
worst single sample: 25.1 µg/L
54/76 SYR4 2012–2019
Bromoform
14.175 µg/L
No EPA limit set
worst single sample: 25.1 µg/L
54/76 SYR4 2012–2019
TTHM
49.54 µg/L 62%
of the EPA limit 80 µg/L
worst single sample: 72.2 µg/L
53/66 SYR4 2012–2019
Chloroform
14.6 µg/L
No EPA limit set
worst single sample: 27.7 µg/L
51/76 SYR4 2012–2019
Dichloroacetic Acid
9.975 µg/L
No EPA limit set
worst single sample: 20.3 µg/L
50/66 SYR4 2012–2019
Dibromoacetic Acid
6.62 µg/L
No EPA limit set
worst single sample: 14.6 µg/L
37/66 SYR4 2012–2019
Copper
197.5 µg/L 15%
of the EPA limit 1300 µg/L
worst single sample: 230 µg/L
31/33 SYR4 2012–2019
Trichloroacetic Acid
6.39 µg/L
No EPA limit set
worst single sample: 8.3 µg/L
30/66 SYR4 2012–2019
Monochloroacetic Acid
4.22 µg/L
No EPA limit set
worst single sample: 4.4 µg/L
19/66 SYR4 2012–2019
Lead
7.074 µg/L 47%
of the EPA limit 15 µg/L
worst single sample: 7.8 µg/L
13/33 SYR4 2012–2019
Monobromoacetic Acid
2.825 µg/L
No EPA limit set
worst single sample: 3.1 µg/L
12/66 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
11/11 LCR 2024
26 contaminants tested, none detected
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Utility contact

Contact
CLARK, JAMES
Phone
940-648-2541

Frequently asked questions about City of Justin

Is City of Justin tap water safe to drink?

EPA monitoring detected 18 contaminants in City of Justin's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in City of Justin's water?

EPA monitoring detected Total Haloacetic Acids (HAA5), Dibromochloromethane, Bromodichloromethane, Bromoform, TTHM, and others. The full list with the level and data source for each is above.

How many people does City of Justin serve?

City of Justin reports serving 7,537 people in Texas, per its EPA record.

Has City of Justin had any water quality violations?

The EPA has 27 violations on file for City of Justin, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

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.