The Power of Information

National Drinking Water Database


Nitrite in Delaware


Nitrite is a chemical that enters water from fertilizer runoff, leaching septic tanks, and erosion of natural deposits.

The Most Polluted Communities in Delaware

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

Ranked by highest average Nitrite level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Brumbleys Family Park
Milton, DE
481 of 40.6 ppm
(0 to 2.4 ppm)
2East Ncc District
Dover, DE
1,3801 of 50.24 ppm
(0 to 1.2 ppm)
3Milford Water Department
Milford, DE
9,8002 of 200.11 ppm
(0 to 2.1 ppm)
4Country Club Village
Milford, DE
721 of 70.05 ppm
(0 to 0.35 ppm)
5Bridgeville Water Department
Bridgeville, DE
1,3503 of 110.05 ppm
(0 to 0.34 ppm)
6Artesian Water Company
Newark, DE
201,0004 of 700.04 ppm
(0 to 1.27 ppm)
7Holly Hill Estates
Smyrna, DE
8311 of 70.03 ppm
(0 to 0.2 ppm)
8Twin Maples Trailer Park
Cherry Hill, DE
1232 of 70.03 ppm
(0 to 0.1 ppm)
9Woodfield
Dover, DE
7021 of 70.03 ppm
(0 to 0.2 ppm)
10Dover Air Park
Dover, DE
2521 of 40.03 ppm
(0 to 0.1 ppm)

Health Based Limits for Nitrite

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.1 ppm
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.1 ppm
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.1 ppm
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.1 ppm
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.1 ppm

Violation Summary for Nitrite in Delaware

There are no violations reported for this contaminant in Delaware