What contaminants are in HAGERSTOWN tap water?

Public data sources identify the following contaminants in HAGERSTOWN's water supply: Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Haloacetic acids (HAA5), Bromodichloromethane, Dibromochloromethane, Chloroform, Nitrate, Chromium (hexavalent), Nitrate and nitrite, Chloromethane, Chlorate, Mercury (inorganic), Barium, Vanadium, Manganese, Strontium, Bromomethane, Chromium (total), Fluoride. Levels and comparison to EWG health guidelines are listed on the full city page.

Which water utility serves HAGERSTOWN?

HAGERSTOWN is served by CITY OF HAGERSTOWN. CITY OF HAGERSTOWN serves approximately 92,200 residents.

Tap Water Quality Report

Tap water quality in HAGERSTOWN, Maryland

Q: Is the tap water in HAGERSTOWN, Maryland safe to drink?

HAGERSTOWN's tap water receives a grade of B (82/100) from TapWaterSafety.org. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline, Total trihalomethanes (TTHMs) significantly above health guideline, Haloacetic acids (HAA5) significantly above health guideline. Grades are based on EPA SDWIS, EPA ECHO, EWG Tap Water Database, and the utility's published Consumer Confidence Report.

Served by CITY OF HAGERSTOWN. 92,200 residents.

Average score 82/100

Utilities 1

Population 92,200

82/100

Good

ⓘ How did we get this rating?

Quick answer

Tap water in HAGERSTOWN, Maryland receives a grade of B (82/100) from TapWaterSafety.org. It's served by CITY OF HAGERSTOWN. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.

Data sources for this grade: utilities.csv EWG Tap Water Database ⓘ How did we get this rating?

What's in HAGERSTOWN's tap water

Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving HAGERSTOWN.

Haloacetic acids (HAA9) significantly above health guideline

Moderate concern

Haloacetic acids (HAA9) detected at 25.7 ppb, 429x above the EWG health guideline of 0.06 ppb.

Total trihalomethanes (TTHMs) significantly above health guideline

Moderate concern

Total trihalomethanes (TTHMs) detected at 27.5 ppb, 183x above the EWG health guideline of 0.15 ppb.

Haloacetic acids (HAA5) significantly above health guideline

Moderate concern

Haloacetic acids (HAA5) detected at 12.7 ppb, 127x above the EWG health guideline of 0.1 ppb.

EPA compliance record

Official U.S. EPA records for CITY OF HAGERSTOWN (system ID MD0210010) for the last 3 years. Checked 2026-10-07.

No EPA violations in the last 3 years.

0 of 12quarters with a violation

Nolead above EPA action level

06/16/2025last state inspection

Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.

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Filters matched to the specific contaminants in HAGERSTOWN's water supply.

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All contaminants detected in HAGERSTOWN's tap water

Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →

Contaminant	Detected	EWG US health-based	EPA US legal	EU DWD Europe	WHO global	CA PHG strictest US	Tested sample year	Status
Haloacetic acids (HAA9) Disinfection byproduct	25.7 ppb	0.06	—	—	—	—	—	429× over
Total trihalomethanes (TTHMs) Disinfection byproduct	27.5 ppb	0.15	80.0	100	—	—	—	183× over
Haloacetic acids (HAA5) Disinfection byproduct	12.7 ppb	0.1	60.0	60	—	—	—	127× over
Bromodichloromethane Disinfection byproduct	4.83 ppb	0.06	—	—	—	—	—	81× over
Dibromochloromethane Disinfection byproduct	3.01 ppb	0.1	—	—	—	—	—	30× over
Chloroform Disinfection byproduct	8.53 ppb	0.4	—	—	—	—	—	21× over
Nitrate Inorganic	1.1 ppm	0.14	10.0	11.3	11.3	10	—	7.9× over
Chromium (hexavalent) Heavy metal	0.0791 ppb	0.02	—	—	—	—	—	4.0× over
Nitrate and nitrite Inorganic	0.48 ppm	0.14	10.0	11.3	11.3	10	—	3.4× over
Chloromethane Other	1.81 ppb	2.69	—	—	—	—	—	Below guideline
Chlorate Disinfection byproduct	85.3 ppb	210.0	—	—	—	—	—	Below guideline
Mercury (inorganic) Heavy metal	0.046 ppb	1.2	2.0	1	6	1.2	—	Below guideline
Barium Heavy metal	23.6 ppb	700.0	2000.0	—	1300	2000	—	Below guideline
Vanadium Other	0.0338 ppb	21.0	—	—	—	—	—	Below guideline
Manganese Heavy metal	0.0525 ppb	100.0	—	50	80	—	—	Below guideline
Strontium Radiological	0.209 ppb	1500.0	—	—	—	—	—	Below guideline
Bromomethane Other	0.102 ppb	—	—	—	—	—	—	Below guideline
Chromium (total) Heavy metal	1.1 ppb	—	100.0	—	—	—	—	Below guideline
Fluoride Inorganic	0.621 ppm	—	4.0	1.5	1.5	—	—	Below guideline

All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.

Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.