Is Town of Thurmont Tap Water Safe? Quality Report

Water source: Ground water under surface influence
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
TT	Health-based	Resolved	2008-11-30
TT	Health-based	Resolved	2008-11-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
MCL	Health-based	Resolved	1999-04-01 → 1999-06-30
TT	Health-based	Archived	1996-11-01 → 1996-11-30
TT	Health-based	Resolved	1995-08-01 → 1999-03-11
TT	Health-based	Resolved	1995-08-01 → 1999-03-11
MR	Monitoring	Resolved	2010-07-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFHXS	0.0053 µg/L	8/8	2025
PFOA	0.0150 µg/L	8/8	2025
PFOS	0.0480 µg/L	8/8	2025
PFBS	0.0043 µg/L	7/8	2025

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
TTHM	12.74 µg/L 16% of the EPA limit 80 µg/L worst single sample: 22.8 µg/L	37/40	SYR4	2012–2019
Nitrate	3600 µg/L 36% of the EPA limit 10000 µg/L	32/32	SYR4	2012–2015
Dibromochloromethane	4.353 µg/L No EPA limit set worst single sample: 5.1 µg/L	19/26	SYR4	2012–2019
Bromodichloromethane	3.855 µg/L No EPA limit set worst single sample: 4.5 µg/L	16/26	SYR4	2012–2019
Nitrate-Nitrite	3487.5 µg/L 35% of the EPA limit 10000 µg/L worst single sample: 3600 µg/L	16/16	SYR4	2016–2019
Lead	0.0040 mg/L 27% of the EPA limit 0.0150 mg/L	15/15	LCR	2018
Bromoform	2.05 µg/L No EPA limit set worst single sample: 2.2 µg/L	13/26	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	1.44 µg/L 2.4% of the EPA limit 60 µg/L worst single sample: 1.5 µg/L	13/40	SYR4	2012–2019
Chloroform	2.726 µg/L No EPA limit set worst single sample: 3.1 µg/L	12/25	SYR4	2012–2019
Trichloroethylene	1.208 µg/L 24% of the EPA limit 5 µg/L worst single sample: 1.32 µg/L	8/22	SYR4	2012–2019
Barium	16.25 µg/L 0.8% of the EPA limit 2000 µg/L worst single sample: 17 µg/L	6/12	SYR4	2013–2018
Fluoride	158 µg/L 4% of the EPA limit 4000 µg/L worst single sample: 160 µg/L	3/12	SYR4	2013–2018
1,2-Dichloroethane	3.331 µg/L 67% of the EPA limit 5 µg/L worst single sample: 3.38 µg/L	2/22	SYR4	2012–2019
Dibromoacetic Acid	1.338 µg/L No EPA limit set worst single sample: 1.36 µg/L	2/12	SYR4	2012–2014
Gross Alpha, Excl. Radon And U	4.525 pCi/L 30% of the EPA limit 15 pCi/L worst single sample: 4.6 pCi/L	2/4	SYR4	2012–2019
Beryllium, Total	3.1 µg/L 78% of the EPA limit 4 µg/L	1/14	SYR4	2013–2018
Combined Radium (-226 And -228)	0.3000 pCi/L 6% of the EPA limit 5 pCi/L	1/1	SYR4	2015
Mercury	0.1700 µg/L 8.5% of the EPA limit 2 µg/L	1/12	SYR4	2013–2018

80 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: LAWSON, HAROLD
Email: [email protected]

Frequently asked questions about Town of Thurmont

Is Town of Thurmont tap water safe to drink?

EPA monitoring detected 22 contaminants in Town of Thurmont'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 Town of Thurmont's water?

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

How many people does Town of Thurmont serve?

Town of Thurmont reports serving 6,200 people in Maryland, per its EPA record.

Has Town of Thurmont had any water quality violations?

The EPA has 92 violations on file for Town of Thurmont, of which 9 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.