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Tap water quality report

Rockwall Ranch Subdivision

EPA monitoring tested this supplier for 79 contaminants and detected 19. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
19
detected
1,773
people served
0
health-based violations
Water source
Ground water
Ownership
Private
Counties served
Comal

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
1
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2013-12-30

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
92.5 µg/L 7.1%
of the EPA limit 1300 µg/L
worst single sample: 263 µg/L
41/44 SYR4 2012–2019
Lead
5.844 µg/L 39%
of the EPA limit 15 µg/L
worst single sample: 11 µg/L
33/44 SYR4 2012–2019
Nitrate
1382.5 µg/L 14%
of the EPA limit 10000 µg/L
worst single sample: 1410 µg/L
32/32 SYR4 2012–2019
Dibromochloromethane
10.48 µg/L
No EPA limit set
worst single sample: 12.4 µg/L
17/22 SYR4 2014–2019
Bromoform
10.02 µg/L
No EPA limit set
worst single sample: 15.9 µg/L
13/22 SYR4 2014–2019
Bromodichloromethane
10.16 µg/L
No EPA limit set
worst single sample: 12.8 µg/L
12/22 SYR4 2014–2019
TTHM
30.85 µg/L 39%
of the EPA limit 80 µg/L
worst single sample: 38.1 µg/L
11/12 SYR4 2014–2019
Dibromoacetic Acid
4.065 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
8/12 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
10.63 µg/L 18%
of the EPA limit 60 µg/L
worst single sample: 14.2 µg/L
8/12 SYR4 2014–2019
Chloroform
8.175 µg/L
No EPA limit set
worst single sample: 9.8 µg/L
6/22 SYR4 2014–2019
Nitrate-Nitrite
1342.5 µg/L 13%
of the EPA limit 10000 µg/L
worst single sample: 1360 µg/L
6/6 SYR4 2012–2015
Barium
40.28 µg/L 2%
of the EPA limit 2000 µg/L
worst single sample: 41.3 µg/L
5/5 SYR4 2013–2019
Fluoride
1144 µg/L 29%
of the EPA limit 4000 µg/L
worst single sample: 1330 µg/L
5/5 SYR4 2013–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
4/4 LCR 2025
Dichloroacetic Acid
5.7 µg/L
No EPA limit set
worst single sample: 6.1 µg/L
3/12 SYR4 2014–2019
Combined Radium (-226 And -228)
3.1 pCi/L 62%
of the EPA limit 5 pCi/L
1/1 SYR4 2016
Gross Alpha, Excl. Radon And U
3.1 pCi/L 21%
of the EPA limit 15 pCi/L
1/2 SYR4 2016–2017
Trichloroacetic Acid
3.3 µg/L
No EPA limit set
1/12 SYR4 2014–2019
Xylenes, Total
0.5000 µg/L 0%
of the EPA limit 10000 µg/L
1/10 SYR4 2015–2019
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
WILLIAMS, AUNDREA
Phone
830-312-4600
Email
[email protected]

Frequently asked questions about Rockwall Ranch Subdivision

Is Rockwall Ranch Subdivision tap water safe to drink?

EPA monitoring detected 19 contaminants in Rockwall Ranch Subdivision'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 Rockwall Ranch Subdivision's water?

EPA monitoring detected Copper, Lead, Nitrate, Dibromochloromethane, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Rockwall Ranch Subdivision serve?

Rockwall Ranch Subdivision reports serving 1,773 people in Texas, per its EPA record.

Has Rockwall Ranch Subdivision had any water quality violations?

The EPA has 1 violation on file for Rockwall Ranch Subdivision, 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.