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Tap water quality report

Highland Ridge Subdivision

EPA monitoring tested this supplier for 79 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
17
detected
591
people served
4
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.

4
health-based violations
51
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2018-07-28
TT Health-based Resolved 2018-07-28
TT Health-based Resolved 2018-07-28
TT Health-based Resolved 2018-07-28
Other Monitoring Resolved 2021-07-01
Other Monitoring Resolved 2021-07-01
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30
MON Monitoring Resolved 2020-06-01 → 2020-06-30

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
169.6 µg/L 13%
of the EPA limit 1300 µg/L
worst single sample: 410 µg/L
30/31 SYR4 2012–2019
Lead
4 µg/L 27%
of the EPA limit 15 µg/L
 14/31 SYR4 2012–2019
Bromodichloromethane
8.98 µg/L
No EPA limit set
worst single sample: 9.4 µg/L
8/11 SYR4 2012–2019
Bromoform
4.52 µg/L
No EPA limit set
worst single sample: 4.8 µg/L
8/11 SYR4 2012–2019
Chloroform
5.265 µg/L
No EPA limit set
worst single sample: 5.3 µg/L
8/11 SYR4 2012–2019
Dibromochloromethane
13.91 µg/L
No EPA limit set
worst single sample: 14.4 µg/L
8/11 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2025
Nitrate
10 µg/L 0.1%
of the EPA limit 10000 µg/L
 6/18 SYR4 2012–2019
Dibromoacetic Acid
3.26 µg/L
No EPA limit set
worst single sample: 3.3 µg/L
5/6 SYR4 2012–2019
Dichloroacetic Acid
1.98 µg/L
No EPA limit set
worst single sample: 2 µg/L
5/6 SYR4 2012–2019
TTHM
32.4 µg/L 41%
of the EPA limit 80 µg/L
worst single sample: 33.9 µg/L
5/6 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
6.74 µg/L 11%
of the EPA limit 60 µg/L
worst single sample: 6.8 µg/L
5/6 SYR4 2012–2019
Fluoride
617 µg/L 15%
of the EPA limit 4000 µg/L
worst single sample: 620 µg/L
3/3 SYR4 2012–2018
Trichloroacetic Acid
1.66 µg/L
No EPA limit set
worst single sample: 1.7 µg/L
3/6 SYR4 2012–2019
Barium
39.405 µg/L 2%
of the EPA limit 2000 µg/L
worst single sample: 39.5 µg/L
2/2 SYR4 2015–2018
Combined Radium (-226 And -228)
2.2 pCi/L 44%
of the EPA limit 5 pCi/L
 1/1 SYR4 2012
Nitrate-Nitrite
10 µg/L 0.1%
of the EPA limit 10000 µg/L
 1/4 SYR4 2013–2019
62 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 Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
THOMAS, CAREY, A
Phone
713-574-5953
Email
CTHOMAS@UNDINELLC.COM

Frequently asked questions about Highland Ridge Subdivision

Is Highland Ridge Subdivision tap water safe to drink?

EPA monitoring detected 17 contaminants in Highland Ridge 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 Highland Ridge Subdivision's water?

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

How many people does Highland Ridge Subdivision serve?

Highland Ridge Subdivision reports serving 591 people in Texas, per its EPA record.

Has Highland Ridge Subdivision had any water quality violations?

The EPA has 51 violations on file for Highland Ridge Subdivision, of which 4 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.