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Tap water quality report

R C H Wsc

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
7,863
people served
4
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.

4
health-based violations
53
violations on file
1
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
Other Monitoring Resolved 2025-10-26
Other Monitoring Resolved 2025-10-26
RPT Monitoring Unaddressed 2025-07-02
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-05-15

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0075 µg/L 4/4 2024
PFBS 0.0049 µg/L 3/4 2024
Pfhxa 0.0067 µg/L 3/4 2024
Pfba 0.0090 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
Copper
1055 µg/L 81%
of the EPA limit 1300 µg/L
worst single sample: 1400 µg/L
70/70 SYR4 2013–2018
Bromodichloromethane
18.5 µg/L
No EPA limit set
worst single sample: 25.9 µg/L
36/36 SYR4 2012–2019
Chloroform
18.575 µg/L
No EPA limit set
worst single sample: 28.6 µg/L
36/36 SYR4 2012–2019
Dibromochloromethane
13.4 µg/L
No EPA limit set
worst single sample: 15.6 µg/L
36/36 SYR4 2012–2019
Dichloroacetic Acid
16.925 µg/L
No EPA limit set
worst single sample: 18.8 µg/L
36/36 SYR4 2012–2019
TTHM
50.2 µg/L 63%
of the EPA limit 80 µg/L
worst single sample: 68 µg/L
36/36 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
33.525 µg/L 56%
of the EPA limit 60 µg/L
worst single sample: 41.2 µg/L
36/36 SYR4 2012–2019
Trichloroacetic Acid
6.8 µg/L
No EPA limit set
worst single sample: 7.2 µg/L
36/36 SYR4 2012–2019
Dibromoacetic Acid
8 µg/L
No EPA limit set
worst single sample: 8.5 µg/L
29/36 SYR4 2012–2019
Bromoform
4.82 µg/L
No EPA limit set
worst single sample: 5.19 µg/L
25/36 SYR4 2012–2019
Monobromoacetic Acid
2.99 µg/L
No EPA limit set
worst single sample: 16.8 µg/L
22/36 SYR4 2012–2019
Lead
5.5 µg/L 37%
of the EPA limit 15 µg/L
worst single sample: 6.1 µg/L
16/70 SYR4 2013–2018
Monochloroacetic Acid
8.025 µg/L
No EPA limit set
worst single sample: 9.9 µg/L
16/36 SYR4 2012–2019
Lead
0.0016 mg/L 10%
of the EPA limit 0.0150 mg/L
15/15 LCR 2025
26 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaNetfosaaNfdhaNmefosaaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaLithium

Utility contact

Contact
NAYLOR, DAVID
Phone
972-805-1950
Email
naylor@rchwatersupply.com

Frequently asked questions about R C H Wsc

Is R C H Wsc tap water safe to drink?

EPA monitoring detected 18 contaminants in R C H Wsc'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 R C H Wsc'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 R C H Wsc serve?

R C H Wsc reports serving 7,863 people in Texas, per its EPA record.

Has R C H Wsc had any water quality violations?

The EPA has 53 violations on file for R C H Wsc, of which 4 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.