What contaminants are in AMHERST (T) tap water?

Public data sources identify the following contaminants in AMHERST (T)'s water supply: Haloacetic acids (HAA9)*, Haloacetic acids (HAA9), Total trihalomethanes (TTHMs)*, Total trihalomethanes (TTHMs), Haloacetic acids (HAA5)*, Haloacetic acids (HAA5), Bromodichloromethane*, Bromodichloromethane, Trichloroacetic acid*, Trichloroacetic acid, Chloroform*, Chloroform, Dibromochloromethane*, Dibromochloromethane, Dichloroacetic acid*, Dichloroacetic acid, Dibromoacetic acid*, Dibromoacetic acid, Chromium (hexavalent)*, Chromium (hexavalent), Nitrate and nitrite*, Nitrate and nitrite, Chlorate*, Chlorate, Nitrate*, Nitrate, Bromoform*, Bromoform, Di(2-ethylhexyl) phthalate*, Di(2-ethylhexyl) phthalate, Manganese*, Manganese, Molybdenum*, Molybdenum, Barium*, Barium, Monochloroacetic acid*, Monochloroacetic acid, Monobromoacetic acid*, Monobromoacetic acid, Vanadium*, Vanadium, Strontium*, Strontium, Fluoride*, Fluoride. Levels and comparison to EWG health guidelines are listed on the full city page.

Which water utility serves AMHERST (T)?

AMHERST (T) is served by ECWA AMHERST and 1 other water systems. ECWA AMHERST serves approximately 92,697 residents.

Tap Water Quality Report

Tap water quality in AMHERST (T), New York

Q: Is the tap water in AMHERST (T), New York safe to drink?

AMHERST (T)'s tap water receives a grade of C (77/100) 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, Haloacetic acids (HAA9) significantly above health guideline, Total trihalomethanes (TTHMs) 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 2 public water systems. 406,077 residents.

Average score 77/100

Utilities 2

Population 406,077

77/100

Average

ⓘ How did we get this rating?

Quick answer

Tap water in AMHERST (T), New York receives a grade of C (77/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily ECWA AMHERST. 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; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) 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 AMHERST (T)'s tap water

Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving AMHERST (T).

Haloacetic acids (HAA9)* significantly above health guideline

Moderate concern

Haloacetic acids (HAA9)* detected at 27.6 ppb, 460x above the EWG health guideline of 0.06 ppb.

Total trihalomethanes (TTHMs)* significantly above health guideline

Moderate concern

Total trihalomethanes (TTHMs)* detected at 38.7 ppb, 258x above the EWG health guideline of 0.15 ppb.

Haloacetic acids (HAA5)* significantly above health guideline

Moderate concern

Haloacetic acids (HAA5)* detected at 19.7 ppb, 197x above the EWG health guideline of 0.1 ppb.

Haloacetic acids (HAA9) significantly above health guideline

Moderate concern

Haloacetic acids (HAA9) detected at 27.6 ppb, 460x above the EWG health guideline of 0.06 ppb.

Total trihalomethanes (TTHMs) significantly above health guideline

Moderate concern

Total trihalomethanes (TTHMs) detected at 38.7 ppb, 258x above the EWG health guideline of 0.15 ppb.

EPA compliance record

Official U.S. EPA records for ECWA AMHERST (system ID NY1400399) 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

11/21/2025last state inspection

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

Water systems serving AMHERST (T)

AMHERST (T) is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.

77/100

ECWA AMHERST

Serves 92,697 residents

Haloacetic acids (HAA9)* significantly above health guideline
Total trihalomethanes (TTHMs)* significantly above health guideline
Haloacetic acids (HAA5)* significantly above health guideline

View full grade card →

77/100

ECWA DIRECT

Serves 313,380 residents

Haloacetic acids (HAA9) significantly above health guideline
Total trihalomethanes (TTHMs) significantly above health guideline
Haloacetic acids (HAA5) significantly above health guideline

View full grade card →

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Filters matched to the specific contaminants in AMHERST (T)'s water supply.

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All contaminants detected in AMHERST (T)'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	27.6 ppb	0.06	—	—	—	—	—	460× over
Haloacetic acids (HAA9) Disinfection byproduct	27.6 ppb	0.06	—	—	—	—	—	460× over
Total trihalomethanes (TTHMs)* Disinfection byproduct	38.7 ppb	0.15	80.0	100	—	—	—	258× over
Total trihalomethanes (TTHMs) Disinfection byproduct	38.7 ppb	0.15	80.0	100	—	—	—	258× over
Haloacetic acids (HAA5)* Disinfection byproduct	19.7 ppb	0.1	60.0	60	—	—	—	197× over
Haloacetic acids (HAA5) Disinfection byproduct	19.7 ppb	0.1	60.0	60	—	—	—	197× over
Bromodichloromethane* Disinfection byproduct	9.3 ppb	0.06	—	—	—	—	—	155× over
Bromodichloromethane Disinfection byproduct	9.3 ppb	0.06	—	—	—	—	—	155× over
Trichloroacetic acid* Disinfection byproduct	8.71 ppb	0.1	—	—	—	—	—	87× over
Trichloroacetic acid Disinfection byproduct	8.71 ppb	0.1	—	—	—	—	—	87× over
Chloroform* Disinfection byproduct	24.3 ppb	0.4	—	—	—	—	—	61× over
Chloroform Disinfection byproduct	24.3 ppb	0.4	—	—	—	—	—	61× over
Dibromochloromethane* Disinfection byproduct	5.07 ppb	0.1	—	—	—	—	—	51× over
Dibromochloromethane Disinfection byproduct	5.07 ppb	0.1	—	—	—	—	—	51× over
Dichloroacetic acid* Disinfection byproduct	9.97 ppb	0.2	—	—	—	—	—	50× over
Dichloroacetic acid Disinfection byproduct	9.97 ppb	0.2	—	—	—	—	—	50× over
Dibromoacetic acid* Disinfection byproduct	0.357 ppb	0.03	—	—	—	—	—	12× over
Dibromoacetic acid Disinfection byproduct	0.357 ppb	0.03	—	—	—	—	—	12× over
Chromium (hexavalent)* Heavy metal	0.0988 ppb	0.02	—	—	—	—	—	4.9× over
Chromium (hexavalent) Heavy metal	0.0988 ppb	0.02	—	—	—	—	—	4.9× over
Nitrate and nitrite* Inorganic	0.126 ppm	0.14	10.0	11.3	11.3	10	—	Below guideline
Nitrate and nitrite Inorganic	0.126 ppm	0.14	10.0	11.3	11.3	10	—	Below guideline
Chlorate* Disinfection byproduct	96.8 ppb	210.0	—	—	—	—	—	Below guideline
Chlorate Disinfection byproduct	96.8 ppb	210.0	—	—	—	—	—	Below guideline
Nitrate* Inorganic	0.06 ppm	0.14	10.0	11.3	11.3	10	—	Below guideline
Nitrate Inorganic	0.06 ppm	0.14	10.0	11.3	11.3	10	—	Below guideline
Bromoform* Disinfection byproduct	0.0736 ppb	0.5	—	—	—	—	—	Below guideline
Bromoform Disinfection byproduct	0.0736 ppb	0.5	—	—	—	—	—	Below guideline
Di(2-ethylhexyl) phthalate* Semi-volatile organic compound	0.435 ppb	3.0	6.0	—	—	—	—	Below guideline
Di(2-ethylhexyl) phthalate Semi-volatile organic compound	0.435 ppb	3.0	6.0	—	—	—	—	Below guideline
Manganese* Heavy metal	2.58 ppb	100.0	—	50	80	—	—	Below guideline
Manganese Heavy metal	2.58 ppb	100.0	—	50	80	—	—	Below guideline
Molybdenum* Other	0.994 ppb	40.0	—	—	—	—	—	Below guideline
Molybdenum Other	0.994 ppb	40.0	—	—	—	—	—	Below guideline
Barium* Heavy metal	15.6 ppb	700.0	2000.0	—	1300	2000	—	Below guideline
Barium Heavy metal	15.6 ppb	700.0	2000.0	—	1300	2000	—	Below guideline
Monochloroacetic acid* Disinfection byproduct	0.532 ppb	53.0	—	—	—	—	—	Below guideline
Monochloroacetic acid Disinfection byproduct	0.532 ppb	53.0	—	—	—	—	—	Below guideline
Monobromoacetic acid* Disinfection byproduct	0.229 ppb	25.0	—	—	—	—	—	Below guideline
Monobromoacetic acid Disinfection byproduct	0.229 ppb	25.0	—	—	—	—	—	Below guideline
Vanadium* Other	0.0625 ppb	21.0	—	—	—	—	—	Below guideline
Vanadium Other	0.0625 ppb	21.0	—	—	—	—	—	Below guideline
Strontium* Radiological	0.161 ppb	1500.0	—	—	—	—	—	Below guideline
Strontium Radiological	0.161 ppb	1500.0	—	—	—	—	—	Below guideline
Fluoride* Inorganic	0.35 ppm	—	4.0	1.5	1.5	—	—	Below guideline
Fluoride Inorganic	0.35 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.