The Power of Information

National Drinking Water Database


Dalapon in Texas


Dalapon is an herbicide used on roads, railway tracks and other rights of way. [read more]

The Most Polluted Communities in Texas

529 water utilities reported detecting Dalapon in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Dalapon level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Lakewood Water System
Lufkin, TX
1104 of 46.5 ppb
(4.3 to 9.2 ppb)
2Rolling Hills Subdivision
Shelbyville, TX
421 of 14.2 ppb
(4.2 ppb)
3Thunderbird Bay Subdivision
Dallas, TX
80014 of 144.05 ppb
(1.6 to 17.5 ppb)
4Red River Army Depot
Texarkana, TX
2,95010 of 103.99 ppb
(2.6 to 6.3 ppb)
5Walnut Ridge Estates Water System
Zavalla, TX
1951 of 23.9 ppb
(0 to 7.8 ppb)
6Riverside Harbor Ll
Livingston, TX
3787 of 153.81 ppb
(0 to 10.1 ppb)
7Jacobs Wsc Plant 4
Henderson, TX
811 of 13.4 ppb
(3.4 ppb)
8Zapata County Wcid Hwy 16 East
Zapata, TX
351 of 13.4 ppb
(3.4 ppb)
9Tejas Village
Jefferson, TX
301 of 13.2 ppb
(3.2 ppb)
10City of Santa Anna
Santa Anna, TX
1,08111 of 143.2 ppb
(0 to 8.6 ppb)

Health Based Limits for Dalapon

StandardDescriptionLevel
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.200 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.200 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.200 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.790 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.900 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.3000 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.3000 ppb

Violation Summary for Dalapon in Texas

There are no violations reported for this contaminant in Texas