25 Cities With the Most Haloacetic Acids (HAA5) in Drinking Water (2026)

By Echo Water Research Team 9 min read
25 Cities With the Most Haloacetic Acids (HAA5) in Drinking Water (2026)
25
Cities Analyzed
258
Total Contaminants Above Guidelines
239,379
People Affected

We analyzed tap water quality data for hundreds of cities across the United States to identify those with the highest levels of haloacetic. This ranking is based on 2026 data from the EPA and EWG databases.

Haloacetic is a contaminant of growing concern in drinking water. The cities below have the highest detected levels based on the most recent testing data available.

Methodology: Cities are ranked by the detected level of haloacetic (descending), showing those with the highest concentrations first. Data sourced from the EPA Safe Drinking Water Information System (SDWIS) and the Environmental Working Group (EWG) Tap Water Database. Only cities with available EWG testing data are included.
1

Statenville, Georgia

Echols County Water Authority • 0 people served
9Above EWG Guidelines
10Total Detected
2Above Legal Limit
BromodichloromethaneCarbon tetrachlorideChloroformDibromoacetic acidDichloroacetic acidHaloacetic acids (HAA5)

Statenville has haloacetic detected at 194.10 ppb. 10 total contaminants were found in the water supply.

See full Statenville water report →
2

Durant, Oklahoma

Durant • 15,545 people served
11Above EWG Guidelines
21Total Detected
0Above Legal Limit
BromodichloromethaneChloriteChloroformDibromochloromethaneDichloroacetic acidHaloacetic acids (HAA5)

Durant has haloacetic detected at 182.70 ppb. 21 total contaminants were found in the water supply.

See full Durant water report →
3

Goodfellow AFB, Texas

Goodfellow Air Force Base • 5,241 people served
16Above EWG Guidelines
34Total Detected
0Above Legal Limit
Arsenic*Bromochloroacetic acidBromodichloromethaneBromoformChloroformDibromoacetic acid

Goodfellow AFB has haloacetic detected at 181 ppb. 34 total contaminants were found in the water supply.

See full Goodfellow AFB water report →
4

San Angelo, Texas

City of San Angelo • 101,004 people served
15Above EWG Guidelines
32Total Detected
0Above Legal Limit
ArsenicBromochloroacetic acidBromodichloromethaneBromoformChloroformDibromoacetic acid

San Angelo has haloacetic detected at 181 ppb. 32 total contaminants were found in the water supply.

See full San Angelo water report →
5

Miles, Texas

City of Miles • 920 people served
15Above EWG Guidelines
33Total Detected
0Above Legal Limit
ArsenicBromochloroacetic acidBromodichloromethaneBromoformChloroformDibromoacetic acid

Miles has haloacetic detected at 181 ppb. 33 total contaminants were found in the water supply.

See full Miles water report →

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6

Holly Hill, Florida

City of Holly Hill • 12,417 people served
4Above EWG Guidelines
12Total Detected
0Above Legal Limit
Chromium (hexavalent)Haloacetic acids (HAA5)Haloacetic acids (HAA9)Total trihalomethanes (TTHMs)

Holly Hill has haloacetic detected at 169.10 ppb. 12 total contaminants were found in the water supply.

See full Holly Hill water report →
7

Sikes, Louisiana

Village of Sikes Water System • 639 people served
8Above EWG Guidelines
14Total Detected
2Above Legal Limit
BromodichloromethaneChloroformDibromoacetic acidDibromochloromethaneDichloroacetic acidHaloacetic acids (HAA5)

Sikes has haloacetic detected at 148.20 ppb. 14 total contaminants were found in the water supply.

See full Sikes water report →
8

Alice, Texas

City of Alice • 17,891 people served
15Above EWG Guidelines
36Total Detected
0Above Legal Limit
ArsenicAtrazineBromochloroacetic acidBromodichloromethaneBromoformChlorite

Alice has haloacetic detected at 137.30 ppb. 36 total contaminants were found in the water supply.

See full Alice water report →
9

Sacramento, Alaska

Vallenar View Mobile Home Park • 225 people served
6Above EWG Guidelines
8Total Detected
1Above Legal Limit
BromodichloromethaneChloroformDichloroacetic acidHaloacetic acids (HAA5)Total trihalomethanes (TTHMs)Trichloroacetic acid

Sacramento has haloacetic detected at 127.60 ppb. 8 total contaminants were found in the water supply.

See full Sacramento water report →
10

Asher, Oklahoma

Asher Utility Dev Authority • 375 people served
8Above EWG Guidelines
11Total Detected
2Above Legal Limit
Bromochloroacetic acid*BromodichloromethaneChloroformDibromochloromethaneDichloroacetic acidHaloacetic acids (HAA5)

Asher has haloacetic detected at 126.80 ppb. 11 total contaminants were found in the water supply.

See full Asher water report →
11

Wanette, Oklahoma

Wanette Public Works Authority • 402 people served
8Above EWG Guidelines
12Total Detected
2Above Legal Limit
Bromochloroacetic acid*BromodichloromethaneChloroformDibromochloromethaneDichloroacetic acidHaloacetic acids (HAA5)

Wanette has haloacetic detected at 119.90 ppb. 12 total contaminants were found in the water supply.

See full Wanette water report →
12

Provencal, Louisiana

Bellwood Water System • 1,032 people served
8Above EWG Guidelines
13Total Detected
2Above Legal Limit
BromodichloromethaneChloroformDibromoacetic acidDibromochloromethaneDichloroacetic acidHaloacetic acids (HAA5)

Provencal has haloacetic detected at 117 ppb. 13 total contaminants were found in the water supply.

See full Provencal water report →
13

Progreso, Texas

Military Highway WSC - Las Rusias WTP • 14,292 people served
17Above EWG Guidelines
33Total Detected
0Above Legal Limit
1,2,3-TrichloropropaneArsenicBromochloroacetic acidBromodichloromethaneBromoformChlorite*

Progreso has haloacetic detected at 111.80 ppb. 33 total contaminants were found in the water supply.

See full Progreso water report →
14

Joaquin, Texas

City of Joaquin • 1,869 people served
14Above EWG Guidelines
31Total Detected
0Above Legal Limit
Arsenic*Bromochloroacetic acidBromodichloromethaneBromoformChloroformDibromoacetic acid

Joaquin has haloacetic detected at 110.10 ppb. 31 total contaminants were found in the water supply.

See full Joaquin water report →
15

Logansport, Louisiana

Logansport Water System • 0 people served
12Above EWG Guidelines
22Total Detected
0Above Legal Limit
ArsenicBromodichloromethaneBromoformChloroformDibromoacetic acidDibromochloromethane

Logansport has haloacetic detected at 110.10 ppb. 22 total contaminants were found in the water supply.

See full Logansport water report →
16

Tatitlek, Alaska

Tatitlek Water System • 95 people served
7Above EWG Guidelines
8Total Detected
1Above Legal Limit
BromodichloromethaneChloroformDichloroacetic acidHaloacetic acids (HAA5)Total trihalomethanes (TTHMs)Trichloroacetic acid

Tatitlek has haloacetic detected at 108.70 ppb. 8 total contaminants were found in the water supply.

See full Tatitlek water report →
17

Riviera Beach, Florida

Riviera Beach Utility District • 31,500 people served
5Above EWG Guidelines
14Total Detected
0Above Legal Limit
Chromium (hexavalent)Haloacetic acids (HAA5)Haloacetic acids (HAA9)NitrateTotal trihalomethanes (TTHMs)1,4-Dioxane

Riviera Beach has haloacetic detected at 107.90 ppb. 14 total contaminants were found in the water supply.

See full Riviera Beach water report →
18

Riviera Bch, Florida

Palm Lake Estates South • 890 people served
5Above EWG Guidelines
14Total Detected
0Above Legal Limit
Chromium (hexavalent)*Haloacetic acids (HAA5)Haloacetic acids (HAA9)*Nitrate*Total trihalomethanes (TTHMs)1,4-Dioxane*

Riviera Bch has haloacetic detected at 107.90 ppb. 14 total contaminants were found in the water supply.

See full Riviera Bch water report →
19

Maysville, Oklahoma

Maysville • 0 people served
10Above EWG Guidelines
14Total Detected
2Above Legal Limit
Bromochloroacetic acidBromodichloromethaneChloroformDibromoacetic acidDibromochloromethaneDichloroacetic acid

Maysville has haloacetic detected at 99.10 ppb. 14 total contaminants were found in the water supply.

See full Maysville water report →
20

Council Hill, Oklahoma

Muskogee County Rural Water District #3 • 0 people served
11Above EWG Guidelines
14Total Detected
0Above Legal Limit
BromodichloromethaneBromoformChloroformDibromoacetic acidDibromochloromethaneDichloroacetic acid

Council Hill has haloacetic detected at 98.60 ppb. 14 total contaminants were found in the water supply.

See full Council Hill water report →
21

Pittsburg, Oklahoma

Pittsburg • 280 people served
7Above EWG Guidelines
10Total Detected
2Above Legal Limit
BromodichloromethaneChloroformDichloroacetic acidHaloacetic acids (HAA5)Radium, combined (-226 and -228)Total trihalomethanes (TTHMs)

Pittsburg has haloacetic detected at 98.10 ppb. 10 total contaminants were found in the water supply.

See full Pittsburg water report →
22

Caseyville, Illinois

Caseyville • 17,000 people served
17Above EWG Guidelines
32Total Detected
0Above Legal Limit
Arsenic*BromodichloromethaneChloroformChromium (hexavalent)Dibromoacetic acidDibromochloromethane

Caseyville has haloacetic detected at 94.90 ppb. 32 total contaminants were found in the water supply.

See full Caseyville water report →
23

Okmulgee, Oklahoma

Okmulgee • 13,495 people served
10Above EWG Guidelines
15Total Detected
0Above Legal Limit
BromodichloromethaneChloroformChromium (hexavalent)Dibromoacetic acidDibromochloromethaneDichloroacetic acid

Okmulgee has haloacetic detected at 94.40 ppb. 15 total contaminants were found in the water supply.

See full Okmulgee water report →
24

Morris, Oklahoma

Okmulgee County Rural Water District #20 • 2,377 people served
10Above EWG Guidelines
15Total Detected
1Above Legal Limit
BromodichloromethaneChloroformChromium (hexavalent)*Dibromoacetic acidDibromochloromethaneDichloroacetic acid

Morris has haloacetic detected at 94.40 ppb. 15 total contaminants were found in the water supply.

See full Morris water report →
25

Schulter, Oklahoma

Okmulgee County Rural Water District #1 • 1,890 people served
10Above EWG Guidelines
16Total Detected
0Above Legal Limit
BromodichloromethaneChloroformChromium (hexavalent)*Dibromoacetic acidDibromochloromethaneDichloroacetic acid

Schulter has haloacetic detected at 94.40 ppb. 16 total contaminants were found in the water supply.

See full Schulter water report →

What We Found: Key Patterns

The most frequently detected contaminants exceeding health guidelines across these cities are Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Bromodichloromethane. These appear repeatedly across different water systems and regions.

Geographically, the states most represented in this ranking are Oklahoma (9), Texas (6), Florida (3). Regional water sources, industrial activity, and agricultural runoff all contribute to local water quality variation.

Across all ranked cities, 258 contaminant readings exceed EWG health guidelines, but only 17 exceed EPA legal limits. This gap of 241 highlights how legal standards may not fully protect public health — EPA limits haven't been updated for many contaminants in decades.

Full Rankings Table

Rank City State Detected Above Guidelines Above Legal People Served
1 Statenville GA 10 9 2 0
2 Durant OK 21 11 0 15,545
3 Goodfellow AFB TX 34 16 0 5,241
4 San Angelo TX 32 15 0 101,004
5 Miles TX 33 15 0 920
6 Holly Hill FL 12 4 0 12,417
7 Sikes LA 14 8 2 639
8 Alice TX 36 15 0 17,891
9 Sacramento AK 8 6 1 225
10 Asher OK 11 8 2 375
11 Wanette OK 12 8 2 402
12 Provencal LA 13 8 2 1,032
13 Progreso TX 33 17 0 14,292
14 Joaquin TX 31 14 0 1,869
15 Logansport LA 22 12 0 0
16 Tatitlek AK 8 7 1 95
17 Riviera Beach FL 14 5 0 31,500
18 Riviera Bch FL 14 5 0 890
19 Maysville OK 14 10 2 0
20 Council Hill OK 14 11 0 0
21 Pittsburg OK 10 7 2 280
22 Caseyville IL 32 17 0 17,000
23 Okmulgee OK 15 10 0 13,495
24 Morris OK 15 10 1 2,377
25 Schulter OK 16 10 0 1,890

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Frequently Asked Questions

What cities have the highest levels of haloacetic?

Our analysis of 2026 data identified the cities with the highest detected levels of haloacetic. See the full ranking above.

Is haloacetic dangerous in drinking water?

Haloacetic has known health risks at elevated levels. The EWG sets health guidelines that are often stricter than EPA legal limits to account for the latest research on long-term exposure.

How do I remove haloacetic from my water?

Reverse osmosis (RO) systems are the most effective at removing a wide range of contaminants. Check the specific contaminant details for recommended filtration technology.

What is the EPA legal limit for haloacetic?

EPA legal limits vary by contaminant and may differ from EWG health guidelines. See individual city reports for specific legal limit comparisons.

Data sources: Environmental Working Group (EWG) Tap Water Database, U.S. EPA Safe Drinking Water Information System (SDWIS)

Last updated: April 2026

Methodology: Contaminant levels are compared against both EPA legal limits (Maximum Contaminant Levels) and EWG health guidelines, which are often stricter and based on the latest scientific research.

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