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Tap water quality report

Grantwoods Water Supply Corporation

EPA monitoring tested this supplier for 77 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

77
contaminants tested
18
detected
78
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Private
Counties served
Harris

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
6
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2019-12-30
MR Monitoring Resolved 2019-12-30
MR Monitoring Resolved 2018-10-01
MR Monitoring Resolved 2018-10-01
MR Monitoring Resolved 2018-10-01
MR Monitoring Resolved 2018-10-01

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
490 µg/L 4.9%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Copper
263.1 µg/L 20%
of the EPA limit 1300 µg/L
worst single sample: 352 µg/L
15/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
Fluoride
128.5 µg/L 3.2%
of the EPA limit 4000 µg/L
worst single sample: 130 µg/L
4/4 SYR4 2013–2019
Lead
1.37 µg/L 9.1%
of the EPA limit 15 µg/L
worst single sample: 1.4 µg/L
4/18 SYR4 2012–2019
Nitrate-Nitrite
475.5 µg/L 4.8%
of the EPA limit 10000 µg/L
worst single sample: 480 µg/L
4/4 SYR4 2012–2015
Barium
208.95 µg/L 10%
of the EPA limit 2000 µg/L
worst single sample: 210 µg/L
2/2 SYR4 2016–2019
Arsenic
2.9 µg/L 29%
of the EPA limit 10 µg/L
 1/2 SYR4 2016–2019
Bromodichloromethane
2.5 µg/L
No EPA limit set
 1/10 SYR4 2014–2019
Bromoform
1.4 µg/L
No EPA limit set
 1/10 SYR4 2014–2019
Chloroform
1.7 µg/L
No EPA limit set
 1/10 SYR4 2014–2019
Dibromoacetic Acid
1.7 µg/L
No EPA limit set
 1/5 SYR4 2014–2018
Dibromochloromethane
2.8 µg/L
No EPA limit set
 1/10 SYR4 2014–2019
Ethylbenzene
8.6 µg/L 1.2%
of the EPA limit 700 µg/L
 1/5 SYR4 2015–2019
Selenium
3.9 µg/L 7.8%
of the EPA limit 50 µg/L
 1/2 SYR4 2016–2019
Toluene
3.6 µg/L 0.4%
of the EPA limit 1000 µg/L
 1/5 SYR4 2015–2019
Total Haloacetic Acids (HAA5)
1.7 µg/L 2.8%
of the EPA limit 60 µg/L
 1/5 SYR4 2014–2018
Xylenes, Total
58 µg/L 0.6%
of the EPA limit 10000 µg/L
 1/5 SYR4 2015–2019
59 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
LYRAS, NICHOLAS
Phone
832-773-0079
Email
gcc-gwsc@outlook.com

Frequently asked questions about Grantwoods Water Supply Corporation

Is Grantwoods Water Supply Corporation tap water safe to drink?

EPA monitoring detected 18 contaminants in Grantwoods Water Supply Corporation'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 Grantwoods Water Supply Corporation's water?

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

How many people does Grantwoods Water Supply Corporation serve?

Grantwoods Water Supply Corporation reports serving 78 people in Texas, per its EPA record.

Has Grantwoods Water Supply Corporation had any water quality violations?

The EPA has 6 violations on file for Grantwoods Water Supply Corporation, 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.