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Tap water quality report

Denton County Fwsd 7

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
13,325
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
38
violations on file
1
still open
ViolationTypeStatusPeriod
MR Monitoring Unaddressed 2025-12-30
Other Monitoring Resolved 2022-01-30
Other Monitoring Resolved 2022-01-30
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
MR Monitoring Resolved 2020-10-01
Other Monitoring Resolved 2016-02-08
Other Monitoring Resolved 2016-02-08
MR Monitoring Resolved 2015-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0082 µg/L 4/4 2025
Pfhxa 0.0047 µg/L 4/4 2025
Pfpea 0.0052 µg/L 4/4 2025
PFBS 0.0032 µg/L 1/4 2025

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
Copper
1100 µg/L 85%
of the EPA limit 1300 µg/L
worst single sample: 1500 µg/L
160/160 SYR4 2013–2019
Bromodichloromethane
10.85 µg/L
No EPA limit set
worst single sample: 13.8 µg/L
86/86 SYR4 2012–2019
Chloroform
11.1 µg/L
No EPA limit set
worst single sample: 19.4 µg/L
86/86 SYR4 2012–2019
Dibromochloromethane
8.975 µg/L
No EPA limit set
worst single sample: 10.5 µg/L
86/86 SYR4 2012–2019
TTHM
33.525 µg/L 42%
of the EPA limit 80 µg/L
worst single sample: 44 µg/L
86/86 SYR4 2012–2019
Dichloroacetic Acid
7.34 µg/L
No EPA limit set
worst single sample: 29.9 µg/L
85/86 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
12.2 µg/L 20%
of the EPA limit 60 µg/L
worst single sample: 48.5 µg/L
85/86 SYR4 2012–2019
Bromoform
4.2845 µg/L
No EPA limit set
worst single sample: 5.4 µg/L
84/86 SYR4 2012–2019
Dibromoacetic Acid
3.9 µg/L
No EPA limit set
worst single sample: 5.9 µg/L
65/86 SYR4 2012–2019
Lead
5.999 µg/L 40%
of the EPA limit 15 µg/L
worst single sample: 11 µg/L
50/160 SYR4 2013–2019
Trichloroacetic Acid
6.32 µg/L
No EPA limit set
worst single sample: 18.7 µg/L
37/86 SYR4 2012–2019
Monochloroacetic Acid
3.63 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
28/86 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
14/14 LCR 2025
Monobromoacetic Acid
1.865 µg/L
No EPA limit set
worst single sample: 1.9 µg/L
2/86 SYR4 2012–2019
26 contaminants tested, none detected
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Utility contact

Contact
WARE, DAVID, J
Phone
940-728-5050
Email
DWARE@LANTANATX.ORG

Frequently asked questions about Denton County Fwsd 7

Is Denton County Fwsd 7 tap water safe to drink?

EPA monitoring detected 18 contaminants in Denton County Fwsd 7'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 Denton County Fwsd 7's water?

EPA monitoring detected Copper, Bromodichloromethane, Chloroform, Dibromochloromethane, TTHM, and others. The full list with the level and data source for each is above.

How many people does Denton County Fwsd 7 serve?

Denton County Fwsd 7 reports serving 13,325 people in Texas, per its EPA record.

Has Denton County Fwsd 7 had any water quality violations?

The EPA has 38 violations on file for Denton County Fwsd 7, of which 0 are health-based (a contaminant limit or required treatment was breached) and 1 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.