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National Drinking Water Database


Picloram in North Carolina


Picloram is an herbicide that may contaminate drinking water sources due to runoff from applications to pasture, rangeland and rights-of-way. [read more]

The Most Polluted Communities in North Carolina

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

Ranked by highest average Picloram level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Sunset Bay S/D
Mooresville, NC
534 of 71.14 ppb
(0 to 3.1 ppb)
2Wildlife Bay S/D
Troutman, NC
1782 of 50.09 ppb
(0 to 0.28 ppb)
3North River Water System
Beaufort, NC
2,1852 of 110.03 ppb
(0 to 0.21 ppb)
4Marine Corps Air Station Cherry Point
Cherry Point, NC
18,1812 of 170.03 ppb
(0 to 0.28 ppb)
5Town of Atlantic Beach
Atlantic Beach, NC
6,3801 of 100.02 ppb
(0 to 0.24 ppb)
6City of Statesville
Statesville, NC
24,9001 of 160.02 ppb
(0 to 0.28 ppb)
7Halifax Co--Hollister
Hollister, NC
2,4211 of 140.02 ppb
(0 to 0.21 ppb)
8Town of Mount Pleasant (Wsacc)
Mt Pleasant, NC
1,4171 of 180.01 ppb
(0 to 0.26 ppb)
9Charlotte-Mecklenburg Utilities
Charlotte, NC
761,8301 of 27< 0.01 ppb
(0 to 0.07 ppb)

Health Based Limits for Picloram

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.500 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.500 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.500 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.700 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.20000 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.20000 ppb

Violation Summary for Picloram in North Carolina

Data from the U.S. Environmental Protection Agency includes the following violations of federal standards in North Carolina since 2004

Violation TypeNumber of Violations
Failure to monitor regularly225