Is Hilltop Estates Wsc Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Denton

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.

health-based violations

139

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1993-08-01 → 1993-08-31
MCL	Health-based	Archived	1993-06-01 → 1993-06-30
MCL	Health-based	Archived	1992-05-01 → 1992-05-31
MR	Monitoring	Resolved	2025-12-30
MR	Monitoring	Resolved	2025-12-30
Other	Monitoring	Resolved	2025-07-01
Other	Monitoring	Resolved	2025-07-01
MR	Monitoring	Resolved	2025-01-01 → 2025-03-31
MR	Monitoring	Resolved	2025-01-01 → 2025-03-31
MR	Monitoring	Resolved	2025-01-01 → 2025-03-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	409.2 µg/L 4.1% of the EPA limit 10000 µg/L worst single sample: 429 µg/L	30/32	SYR4	2012–2019
Copper	151.2 µg/L 12% of the EPA limit 1300 µg/L worst single sample: 180 µg/L	10/14	SYR4	2013–2019
Barium	8.55 µg/L 0.4% of the EPA limit 2000 µg/L worst single sample: 8.6 µg/L	6/6	SYR4	2013–2019
Chromium	6.9325 µg/L 6.9% of the EPA limit 100 µg/L worst single sample: 7.56 µg/L	6/6	SYR4	2013–2019
Fluoride	883.5 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 890 µg/L	6/6	SYR4	2013–2019
Nitrate-Nitrite	418 µg/L 4.2% of the EPA limit 10000 µg/L worst single sample: 429 µg/L	6/6	SYR4	2012–2015
Combined Radium (-226 And -228)	3.269 pCi/L 65% of the EPA limit 5 pCi/L worst single sample: 3.5 pCi/L	3/4	SYR4	2013–2019
Chloroform	2.4085 µg/L No EPA limit set worst single sample: 2.41 µg/L	2/12	SYR4	2015–2019
Gross Alpha, Excl. Radon And U	5.99 pCi/L 40% of the EPA limit 15 pCi/L worst single sample: 6 pCi/L	2/3	SYR4	2016–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	2/2	LCR	2025
Bromodichloromethane	1.03 µg/L No EPA limit set	1/12	SYR4	2015–2019
Bromoform	1.34 µg/L No EPA limit set	1/12	SYR4	2015–2019
Cyanide	33.1 µg/L 17% of the EPA limit 200 µg/L	1/4	SYR4	2014–2017
Dibromochloromethane	1.76 µg/L No EPA limit set	1/12	SYR4	2015–2019
Dichloroacetic Acid	1 µg/L No EPA limit set	1/2	SYR4	2016–2019
Lead	0.4320 µg/L 2.9% of the EPA limit 15 µg/L	1/14	SYR4	2013–2019
TTHM	2.38 µg/L 3% of the EPA limit 80 µg/L	1/2	SYR4	2016–2019
Total Haloacetic Acids (HAA5)	2 µg/L 3.3% of the EPA limit 60 µg/L	1/2	SYR4	2016–2019
Trichloroacetic Acid	1 µg/L No EPA limit set	1/2	SYR4	2016–2019

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, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: BOYD, DAVID

Frequently asked questions about Hilltop Estates Wsc

Is Hilltop Estates Wsc tap water safe to drink?

EPA monitoring detected 19 contaminants in Hilltop Estates 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 Hilltop Estates Wsc's water?

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

How many people does Hilltop Estates Wsc serve?

Hilltop Estates Wsc reports serving 69 people in Texas, per its EPA record.

Has Hilltop Estates Wsc had any water quality violations?

The EPA has 139 violations on file for Hilltop Estates Wsc, of which 3 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.