Is White Rock Tap Water Safe? Quality Report

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

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

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1985-09-01 → 1985-11-30
MR	Monitoring	Resolved	2011-01-01 → 2011-01-31

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
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Nitrate	4600 µg/L 46% of the EPA limit 10000 µg/L	8/8	SYR4	2012–2015
Chloroform	2.52 µg/L No EPA limit set worst single sample: 2.7 µg/L	7/10	SYR4	2012–2019
Bromodichloromethane	1.725 µg/L No EPA limit set worst single sample: 1.8 µg/L	6/10	SYR4	2012–2019
Dibromochloromethane	1.07 µg/L No EPA limit set worst single sample: 1.1 µg/L	4/9	SYR4	2012–2019
Nitrate-Nitrite	4485 µg/L 45% of the EPA limit 10000 µg/L worst single sample: 4500 µg/L	4/4	SYR4	2016–2019
TTHM	6.45 µg/L 8.1% of the EPA limit 80 µg/L worst single sample: 6.6 µg/L	4/4	SYR4	2013–2017
Barium	146.7 µg/L 7.3% of the EPA limit 2000 µg/L worst single sample: 151 µg/L	3/3	SYR4	2013–2019
Chromium	1.95 µg/L 2% of the EPA limit 100 µg/L worst single sample: 2 µg/L	2/3	SYR4	2013–2019
Dichloroacetic Acid	2.3 µg/L No EPA limit set	1/3	SYR4	2013–2014
Gross Alpha, Excl. Radon And U	2.2 pCi/L 15% of the EPA limit 15 pCi/L	1/1	SYR4	2012
Total Haloacetic Acids (HAA5)	2.3 µg/L 3.8% of the EPA limit 60 µg/L	1/4	SYR4	2013–2017

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, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneFluorideGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SMITH, JOSHUA
Phone: 301-600-2581
Email: JSmith5@FrederickCountyMD.gov

Frequently asked questions about White Rock

Is White Rock tap water safe to drink?

EPA monitoring detected 12 contaminants in White Rock'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 White Rock's water?

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

How many people does White Rock serve?

White Rock reports serving 256 people in Maryland, per its EPA record.

Has White Rock had any water quality violations?

The EPA has 2 violations on file for White Rock, of which 1 is 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.