Nitrate
Goodsprings Water Supply Corporation
Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 0.0197 ppm | 4 | 4 | 0.0173 ppm - 0.0239 ppm |
| 2019 | 0.0228 ppm | 8 | 8 | 0.0151 ppm - 0.0290 ppm |
| 2020 | 0.0198 ppm | 4 | 4 | 0.0189 ppm - 0.0207 ppm |
| 2021 | 0.0245 ppm | 4 | 4 | 0.0171 ppm - 0.0383 ppm |
| 2022 | 0.0191 ppm | 4 | 4 | 0.0164 ppm - 0.0243 ppm |
| 2023 | 0.0235 ppm | 4 | 4 | 0.0148 ppm - 0.0427 ppm |
ppm = parts per million
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 0.14 ppm
The EWG health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.
EPA Maximum Contaminant
Level (MCL): 10 ppm
The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.
ppm = parts per million
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-05-17 | Q1820171017 | 0.0239 ppm |
| 2018-05-17 | Q1820171018 | 0.0192 ppm |
| 2018-05-17 | Q1820171019 | 0.0173 ppm |
| 2018-05-17 | Q1820171016 | 0.0184 ppm |
| 2019-01-03 | Q1900156004 | 0.0257 ppm |
| 2019-01-03 | Q1900156010 | 0.0151 ppm |
| 2019-01-03 | Q1900156015 | 0.0168 ppm |
| 2019-01-03 | Q1900156021 | 0.0235 ppm |
| 2019-03-20 | Q1911686001 | 0.0290 ppm |
| 2019-03-20 | Q1911686002 | 0.0268 ppm |
| 2019-03-20 | Q1911686003 | 0.0272 ppm |
| 2019-03-20 | Q1911686004 | 0.0186 ppm |
| 2020-03-11 | Q2010297006 | 0.0194 ppm |
| 2020-06-17 | Q2024667006 | 0.0189 ppm |
| 2020-12-17 | Q2050081017 | 0.0200 ppm |
| 2020-12-17 | Q2050081018 | 0.0207 ppm |
| 2021-03-04 | Q2105807007 | 0.0383 ppm |
| 2021-11-12 | Q2131822003 | 0.0171 ppm |
| 2021-11-12 | Q2131822004 | 0.0213 ppm |
| 2021-11-12 | Q2131822017 | 0.0211 ppm |
| 2022-03-03 | Q2207402004 | 0.0189 ppm |
| 2022-05-12 | Q2214292010 | 0.0166 ppm |
| 2022-05-12 | Q2214292011 | 0.0243 ppm |
| 2022-05-12 | Q2214292012 | 0.0164 ppm |
| 2023-02-16 | Q2306539011 | 0.0173 ppm |
| 2023-07-06 | Q2326236013 | 0.0193 ppm |
| 2023-07-06 | Q2326236014 | 0.0427 ppm |
| 2023-07-06 | Q2326236015 | 0.0148 ppm |