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Tap water quality report

South Grayson Sud

EPA monitoring tested this supplier for 109 contaminants and detected 25. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
25
detected
6,750
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Grayson

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
9
violations on file
1
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2025-12-30
MR Monitoring Resolved 2025-12-30
RPT Monitoring Unaddressed 2025-07-02
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
MR Monitoring Resolved 2018-01-01 → 2018-03-31
MR Monitoring Resolved 2018-01-01 → 2018-03-31
MR Monitoring Resolved 2018-01-01 → 2018-03-31
MR Monitoring Resolved 2018-01-01 → 2018-03-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
6:2 Fts 0.0084 µg/L 1/10 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
Nitrate
403.3 µg/L 4%
of the EPA limit 10000 µg/L
worst single sample: 409 µg/L
68/70 SYR4 2012–2019
Copper
169.1 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 235 µg/L
64/65 SYR4 2013–2019
Dibromochloromethane
8.905 µg/L
No EPA limit set
worst single sample: 9.68 µg/L
36/36 SYR4 2013–2019
Bromoform
9.035 µg/L
No EPA limit set
worst single sample: 11.4 µg/L
35/36 SYR4 2013–2019
Bromodichloromethane
4.695 µg/L
No EPA limit set
worst single sample: 5.02 µg/L
31/36 SYR4 2013–2019
Chloroform
2.1925 µg/L
No EPA limit set
worst single sample: 2.77 µg/L
16/36 SYR4 2013–2019
Fluoride
2878 µg/L 72%
of the EPA limit 4000 µg/L
worst single sample: 2890 µg/L
13/13 SYR4 2012–2018
Lead
0.0075 mg/L 50%
of the EPA limit 0.0150 mg/L
 12/12 LCR 2025
Nitrate-Nitrite
322 µg/L 3.2%
of the EPA limit 10000 µg/L
worst single sample: 404 µg/L
11/11 SYR4 2012–2019
TTHM
20.9 µg/L 26%
of the EPA limit 80 µg/L
worst single sample: 24.2 µg/L
11/11 SYR4 2013–2019
Lithium
35.6 µg/L
No EPA limit set
 10/10 UCMR-5 2024
Barium
10.72 µg/L 0.5%
of the EPA limit 2000 µg/L
worst single sample: 12 µg/L
9/9 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
8.185 µg/L 14%
of the EPA limit 60 µg/L
worst single sample: 10.6 µg/L
8/11 SYR4 2013–2019
Chromium
7.43 µg/L 7.4%
of the EPA limit 100 µg/L
worst single sample: 8 µg/L
7/9 SYR4 2015–2019
Lead
4.19 µg/L 28%
of the EPA limit 15 µg/L
worst single sample: 4.7 µg/L
7/65 SYR4 2013–2019
Dichloroacetic Acid
1.875 µg/L
No EPA limit set
worst single sample: 2 µg/L
6/11 SYR4 2013–2019
Dibromoacetic Acid
5.6 µg/L
No EPA limit set
worst single sample: 6.2 µg/L
4/11 SYR4 2013–2019
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 2/3 SYR4 2016
Di(2-ethylhexyl) Phthalate
5.78 µg/L 96%
of the EPA limit 6 µg/L
worst single sample: 6 µg/L
2/12 SYR4 2015–2018
Gross Alpha, Excl. Radon And U
8.99 pCi/L 60%
of the EPA limit 15 pCi/L
worst single sample: 9.3 pCi/L
2/5 SYR4 2015–2017
Monochloroacetic Acid
2.34 µg/L
No EPA limit set
worst single sample: 2.4 µg/L
2/11 SYR4 2013–2019
Antimony, Total
0.2000 µg/L 3.3%
of the EPA limit 6 µg/L
 1/9 SYR4 2015–2019
Arsenic
0.7800 µg/L 7.8%
of the EPA limit 10 µg/L
 1/9 SYR4 2015–2019
Monobromoacetic Acid
2.4 µg/L
No EPA limit set
 1/11 SYR4 2013–2019
84 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts8:2 Fts9Cl-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CALDWELL, TOM
Phone
903-482-6231
Email
sgsud@frontier.com

Frequently asked questions about South Grayson Sud

Is South Grayson Sud tap water safe to drink?

EPA monitoring detected 25 contaminants in South Grayson Sud'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 South Grayson Sud's water?

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

How many people does South Grayson Sud serve?

South Grayson Sud reports serving 6,750 people in Texas, per its EPA record.

Has South Grayson Sud had any water quality violations?

The EPA has 9 violations on file for South Grayson Sud, 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.