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Tap water quality report

City of Royse City

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
24,313
people served
14
health-based violations
Water source
SWP
Ownership
Local government
Counties served
Rockwall

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.

14
health-based violations
54
violations on file
3
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
MCL Health-based Resolved 2012-12-01 → 2012-12-31
MCL Health-based Resolved 2012-12-01 → 2012-12-31
MCL Health-based Resolved 2012-12-01 → 2012-12-31
MCL Health-based Resolved 2012-12-01 → 2012-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31
MCL Health-based Resolved 2007-12-01 → 2007-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0056 µg/L 4/4 2025
Pfpea 0.0056 µg/L 4/4 2025
Pfba 0.0075 µg/L 3/4 2025
PFBS 0.0041 µg/L 2/4 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
904.42 µg/L 70%
of the EPA limit 1300 µg/L
worst single sample: 1434.07 µg/L
150/150 SYR4 2013–2019
Bromodichloromethane
19.665 µg/L
No EPA limit set
worst single sample: 23.2 µg/L
128/128 SYR4 2012–2019
Chloroform
16.395 µg/L
No EPA limit set
worst single sample: 18.5 µg/L
128/128 SYR4 2012–2019
Dibromochloromethane
15.585 µg/L
No EPA limit set
worst single sample: 18.8 µg/L
128/128 SYR4 2012–2019
Dichloroacetic Acid
17.7 µg/L
No EPA limit set
worst single sample: 20.8 µg/L
128/128 SYR4 2012–2019
TTHM
52.07 µg/L 65%
of the EPA limit 80 µg/L
worst single sample: 59.6 µg/L
128/128 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
38.21 µg/L 64%
of the EPA limit 60 µg/L
worst single sample: 46.1 µg/L
128/128 SYR4 2012–2019
Trichloroacetic Acid
6.865 µg/L
No EPA limit set
worst single sample: 8.4 µg/L
128/128 SYR4 2012–2019
Dibromoacetic Acid
8.9 µg/L
No EPA limit set
worst single sample: 9.7 µg/L
93/128 SYR4 2012–2019
Lead
2.8305 µg/L 19%
of the EPA limit 15 µg/L
worst single sample: 6.1 µg/L
92/150 SYR4 2013–2019
Bromoform
5.724 µg/L
No EPA limit set
worst single sample: 7.01 µg/L
77/128 SYR4 2012–2019
Monobromoacetic Acid
11.21 µg/L
No EPA limit set
worst single sample: 16.7 µg/L
75/128 SYR4 2012–2019
Monochloroacetic Acid
13.425 µg/L
No EPA limit set
worst single sample: 14.3 µg/L
36/128 SYR4 2012–2019
Lead
0.0010 mg/L 6.8%
of the EPA limit 0.0150 mg/L
16/16 LCR 2025
26 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
NICHOL, JANET
Phone
972-636-2250

Frequently asked questions about City of Royse City

Is City of Royse City tap water safe to drink?

EPA monitoring detected 18 contaminants in City of Royse City'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 Royse City's water?

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

How many people does City of Royse City serve?

City of Royse City reports serving 24,313 people in Texas, per its EPA record.

Has City of Royse City had any water quality violations?

The EPA has 54 violations on file for City of Royse City, of which 14 are health-based (a contaminant limit or required treatment was breached) and 3 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.