Nitrate and nitrite
City of Hastings
Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 7.87 ppm | 72 | 72 | 5.15 ppm - 9.42 ppm |
2015 | 7.90 ppm | 60 | 60 | 5.10 ppm - 10.5 ppm |
2016 | 7.66 ppm | 51 | 51 | 3.78 ppm - 11.9 ppm |
2017 | 7.51 ppm | 44 | 44 | 4.04 ppm - 10.7 ppm |
2018 | 7.81 ppm | 47 | 47 | 4.27 ppm - 10.7 ppm |
2019 | 7.14 ppm | 45 | 45 | 3.12 ppm - 9.52 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The 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
ppm = parts per million
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-14 | 281021 | 8.92 ppm |
2014-01-14 | 281023 | 7.78 ppm |
2014-01-14 | 281025 | 9.39 ppm |
2014-01-14 | 281026 | 8.30 ppm |
2014-01-14 | 281028 | 9.34 ppm |
2014-01-14 | 281029 | 7.95 ppm |
2014-01-14 | 281030 | 7.90 ppm |
2014-01-14 | 281032 | 8.47 ppm |
2014-01-14 | 281035 | 6.95 ppm |
2014-01-14 | 281036 | 6.89 ppm |
2014-01-15 | 281022 | 8.27 ppm |
2014-01-15 | 281024 | 8.34 ppm |
2014-01-15 | 281027 | 8.06 ppm |
2014-01-15 | 281031 | 8.41 ppm |
2014-01-15 | 281033 | 8.34 ppm |
2014-01-15 | 281034 | 8.42 ppm |
2014-03-11 | 279415 | 7.73 ppm |
2014-03-11 | 279416 | 6.91 ppm |
2014-03-11 | 279414 | 8.10 ppm |
2014-04-08 | 293757 | 9.13 ppm |
2014-04-08 | 293758 | 7.90 ppm |
2014-04-08 | 293760 | 9.04 ppm |
2014-04-08 | 293767 | 6.55 ppm |
2014-04-08 | 293768 | 7.45 ppm |
2014-04-08 | 294259 | 7.86 ppm |
2014-04-09 | 293756 | 6.11 ppm |
2014-04-09 | 293761 | 9.42 ppm |
2014-04-09 | 293762 | 9.34 ppm |
2014-04-09 | 293766 | 8.10 ppm |
2014-04-09 | 294260 | 8.01 ppm |
2014-04-09 | 293754 | 6.09 ppm |
2014-04-22 | 293753 | 7.69 ppm |
2014-04-22 | 293755 | 8.04 ppm |
2014-04-22 | 293759 | 7.85 ppm |
2014-04-22 | 293763 | 7.78 ppm |
2014-04-22 | 293764 | 7.37 ppm |
2014-04-22 | 293765 | 7.79 ppm |
2014-06-25 | 312622 | 7.82 ppm |
2014-08-12 | 308538 | 8.86 ppm |
2014-08-12 | 308539 | 7.90 ppm |
2014-08-12 | 308541 | 9.02 ppm |
2014-08-12 | 308547 | 5.15 ppm |
2014-08-12 | 308548 | 8.36 ppm |
2014-08-12 | 308549 | 8.31 ppm |
2014-08-12 | 308551 | 7.55 ppm |
2014-08-13 | 308535 | 6.08 ppm |
2014-08-13 | 308536 | 7.16 ppm |
2014-08-13 | 308537 | 8.10 ppm |
2014-08-13 | 308542 | 8.30 ppm |
2014-08-13 | 308543 | 7.65 ppm |
2014-08-13 | 308544 | 6.15 ppm |
2014-08-13 | 308545 | 7.48 ppm |
2014-08-13 | 308546 | 6.90 ppm |
2014-08-13 | 308533 | 7.93 ppm |
2014-08-13 | 308534 | 6.73 ppm |
2014-08-13 | 308550 | 7.66 ppm |
2014-10-08 | 328053 | 5.94 ppm |
2014-10-08 | 328056 | 8.85 ppm |
2014-10-08 | 328057 | 8.08 ppm |
2014-10-08 | 328059 | 9.09 ppm |
2014-10-08 | 328060 | 8.42 ppm |
2014-10-08 | 328061 | 8.38 ppm |
2014-10-08 | 328063 | 7.96 ppm |
2014-10-13 | 328052 | 8.48 ppm |
2014-10-13 | 328054 | 8.48 ppm |
2014-10-13 | 328055 | 7.66 ppm |
2014-10-13 | 328062 | 7.89 ppm |
2014-10-13 | 328064 | 8.07 ppm |
2014-10-13 | 328065 | 7.56 ppm |
2014-10-13 | 328066 | 7.87 ppm |
2014-10-13 | 328067 | 7.62 ppm |
2014-10-13 | 328068 | 7.40 ppm |
2015-01-19 | 343967 | 8.60 ppm |
2015-01-19 | 343968 | 8.03 ppm |
2015-01-19 | 343970 | 8.95 ppm |
2015-01-19 | 343972 | 7.80 ppm |
2015-01-19 | 343977 | 7.16 ppm |
2015-01-19 | 343978 | 6.64 ppm |
2015-01-27 | 343974 | 7.65 ppm |
2015-01-27 | 343975 | 7.94 ppm |
2015-01-27 | 343976 | 7.64 ppm |
2015-01-27 | 343979 | 7.62 ppm |
2015-01-27 | 343963 | 8.19 ppm |
2015-01-27 | 343964 | 6.53 ppm |
2015-01-27 | 343965 | 8.19 ppm |
2015-01-27 | 343966 | 7.79 ppm |
2015-01-27 | 343971 | 7.44 ppm |
2015-01-27 | 343973 | 7.76 ppm |
2015-02-11 | 343962 | 6.95 ppm |
2015-04-14 | 357481 | 5.67 ppm |
2015-04-14 | 357484 | 8.66 ppm |
2015-04-14 | 357485 | 8.02 ppm |
2015-04-14 | 357486 | 9.03 ppm |
2015-04-14 | 357487 | 9.73 ppm |
2015-04-14 | 357488 | 7.82 ppm |
2015-04-27 | 357479 | 7.45 ppm |
2015-04-27 | 357480 | 8.84 ppm |
2015-04-27 | 357482 | 8.84 ppm |
2015-04-27 | 357490 | 5.12 ppm |
2015-04-27 | 357493 | 7.81 ppm |
2015-04-27 | 357494 | 7.83 ppm |
2015-04-27 | 357495 | 5.10 ppm |
2015-05-05 | 357492 | 7.47 ppm |
2015-05-05 | 357483 | 8.01 ppm |
2015-05-05 | 357489 | 7.17 ppm |
2015-05-05 | 357491 | 7.82 ppm |
2015-05-20 | 356590 | 7.94 ppm |
2015-08-11 | 372491 | 9.15 ppm |
2015-08-11 | 372492 | 9.06 ppm |
2015-08-11 | 372493 | 9.01 ppm |
2015-08-11 | 372494 | 8.14 ppm |
2015-08-11 | 372495 | 8.39 ppm |
2015-08-11 | 372496 | 8.59 ppm |
2015-08-11 | 372497 | 9.60 ppm |
2015-08-11 | 372498 | 9.42 ppm |
2015-08-11 | 372486 | 7.77 ppm |
2015-08-11 | 372487 | 6.96 ppm |
2015-08-11 | 372488 | 6.15 ppm |
2015-08-11 | 372489 | 7.01 ppm |
2015-08-11 | 372490 | 8.06 ppm |
2015-10-20 | 391736 | 6.26 ppm |
2015-10-20 | 391737 | 6.39 ppm |
2015-10-20 | 391738 | 8.52 ppm |
2015-10-20 | 391739 | 8.22 ppm |
2015-10-20 | 391740 | 9.02 ppm |
2015-10-20 | 391741 | 8.32 ppm |
2015-10-20 | 391742 | 9.00 ppm |
2015-10-20 | 391743 | 10.5 ppm |
2015-10-20 | 391744 | 8.04 ppm |
2015-10-20 | 391745 | 7.81 ppm |
2015-10-20 | 391746 | 7.62 ppm |
2015-11-17 | 398135 | 7.57 ppm |
2016-01-18 | 7.37 ppm | |
2016-01-18 | 8.54 ppm | |
2016-01-18 | 8.09 ppm | |
2016-01-18 | 7.73 ppm | |
2016-01-18 | 5.86 ppm | |
2016-01-18 | 7.84 ppm | |
2016-01-18 | 7.48 ppm | |
2016-01-18 | 5.31 ppm | |
2016-01-18 | 5.46 ppm | |
2016-01-18 | 6.18 ppm | |
2016-01-18 | 8.66 ppm | |
2016-02-17 | 5.06 ppm | |
2016-03-08 | 6.65 ppm | |
2016-03-08 | 6.57 ppm | |
2016-03-08 | 7.82 ppm | |
2016-03-08 | 6.43 ppm | |
2016-04-19 | 8.59 ppm | |
2016-04-19 | 7.35 ppm | |
2016-04-19 | 8.86 ppm | |
2016-04-19 | 8.12 ppm | |
2016-04-19 | 8.36 ppm | |
2016-04-19 | 7.01 ppm | |
2016-04-19 | 7.46 ppm | |
2016-04-19 | 3.78 ppm | |
2016-04-19 | 7.78 ppm | |
2016-04-19 | 7.96 ppm | |
2016-04-19 | 6.84 ppm | |
2016-04-19 | 8.23 ppm | |
2016-05-17 | 8.03 ppm | |
2016-07-20 | 8.60 ppm | |
2016-07-20 | 8.17 ppm | |
2016-07-20 | 8.79 ppm | |
2016-07-20 | 7.55 ppm | |
2016-07-20 | 11.9 ppm | |
2016-07-20 | 9.59 ppm | |
2016-07-20 | 7.07 ppm | |
2016-07-20 | 8.27 ppm | |
2016-07-26 | 7.23 ppm | |
2016-07-26 | 7.81 ppm | |
2016-07-26 | 7.74 ppm | |
2016-07-26 | 8.67 ppm | |
2016-10-18 | 8.69 ppm | |
2016-10-18 | 7.84 ppm | |
2016-10-18 | 6.73 ppm | |
2016-10-18 | 7.28 ppm | |
2016-10-18 | 8.51 ppm | |
2016-10-18 | 7.21 ppm | |
2016-10-18 | 9.08 ppm | |
2016-10-18 | 8.63 ppm | |
2016-11-29 | 8.20 ppm | |
2016-11-29 | 7.90 ppm | |
2017-01-17 | 7.62 ppm | |
2017-01-17 | 6.79 ppm | |
2017-01-17 | 6.84 ppm | |
2017-01-17 | 6.95 ppm | |
2017-01-17 | 4.30 ppm | |
2017-01-17 | 8.75 ppm | |
2017-01-17 | 8.04 ppm | |
2017-01-17 | 8.45 ppm | |
2017-01-17 | 6.77 ppm | |
2017-02-20 | 6.76 ppm | |
2017-02-20 | 6.77 ppm | |
2017-02-20 | 7.74 ppm | |
2017-02-20 | 7.85 ppm | |
2017-04-10 | 7.44 ppm | |
2017-04-10 | 9.17 ppm | |
2017-04-10 | 7.37 ppm | |
2017-04-10 | 5.10 ppm | |
2017-04-10 | 9.34 ppm | |
2017-04-10 | 8.98 ppm | |
2017-04-10 | 8.57 ppm | |
2017-04-10 | 10.7 ppm | |
2017-04-10 | 6.32 ppm | |
2017-05-15 | 8.41 ppm | |
2017-05-15 | 6.78 ppm | |
2017-06-05 | 8.63 ppm | |
2017-08-01 | 6.81 ppm | |
2017-08-01 | 6.64 ppm | |
2017-08-01 | 8.48 ppm | |
2017-08-01 | 7.29 ppm | |
2017-08-01 | 4.39 ppm | |
2017-08-01 | 8.39 ppm | |
2017-08-01 | 9.91 ppm | |
2017-08-09 | 7.32 ppm | |
2017-10-30 | 9.02 ppm | |
2017-10-30 | 7.36 ppm | |
2017-10-30 | 4.04 ppm | |
2017-10-30 | 6.88 ppm | |
2017-10-30 | 8.10 ppm | |
2017-10-30 | 8.26 ppm | |
2017-10-30 | 6.81 ppm | |
2017-10-30 | 7.20 ppm | |
2017-11-27 | 8.32 ppm | |
2017-11-27 | 7.53 ppm | |
2017-11-27 | 7.43 ppm | |
2018-01-08 | 530931 | 6.93 ppm |
2018-01-08 | 530935 | 7.09 ppm |
2018-01-08 | 530936 | 7.05 ppm |
2018-01-08 | 530937 | 8.85 ppm |
2018-01-08 | 530938 | 7.16 ppm |
2018-01-08 | 530939 | 4.27 ppm |
2018-01-16 | 530932 | 6.50 ppm |
2018-01-16 | 530933 | 6.22 ppm |
2018-01-16 | 530934 | 8.23 ppm |
2018-01-16 | 530941 | 7.60 ppm |
2018-01-16 | 530942 | 8.42 ppm |
2018-02-12 | 530940 | 9.61 ppm |
2018-02-12 | 530943 | 8.04 ppm |
2018-05-09 | 544473 | 7.37 ppm |
2018-05-09 | 544474 | 7.72 ppm |
2018-05-09 | 544475 | 8.85 ppm |
2018-05-09 | 544476 | 7.71 ppm |
2018-05-09 | 544477 | 4.73 ppm |
2018-05-09 | 544478 | 9.90 ppm |
2018-05-09 | 544479 | 8.06 ppm |
2018-05-09 | 544480 | 8.91 ppm |
2018-05-09 | 544481 | 8.00 ppm |
2018-05-09 | 544482 | 7.64 ppm |
2018-05-21 | 544471 | 8.73 ppm |
2018-05-21 | 544472 | 6.97 ppm |
2018-08-13 | 562357 | 5.19 ppm |
2018-08-13 | 562358 | 7.60 ppm |
2018-08-13 | 562359 | 8.91 ppm |
2018-08-13 | 562360 | 7.43 ppm |
2018-08-13 | 562361 | 10.2 ppm |
2018-08-13 | 562362 | 8.51 ppm |
2018-08-13 | 562363 | 9.51 ppm |
2018-08-13 | 562364 | 10.7 ppm |
2018-08-13 | 562365 | 7.98 ppm |
2018-08-13 | 562366 | 8.76 ppm |
2018-08-20 | 571532 | 10.6 ppm |
2018-11-13 | 578490 | 7.98 ppm |
2018-11-13 | 578492 | 4.96 ppm |
2018-11-13 | 578493 | 6.77 ppm |
2018-11-13 | 578494 | 8.62 ppm |
2018-11-13 | 578495 | 7.39 ppm |
2018-11-13 | 578497 | 8.16 ppm |
2018-11-13 | 578500 | 7.73 ppm |
2018-11-13 | 578501 | 9.03 ppm |
2018-11-13 | 578502 | 5.84 ppm |
2018-11-14 | 578491 | 7.44 ppm |
2018-11-14 | 578496 | 7.41 ppm |
2019-01-16 | 590981 | 5.37 ppm |
2019-01-16 | 590982 | 6.98 ppm |
2019-01-16 | 590983 | 6.70 ppm |
2019-01-16 | 590984 | 7.31 ppm |
2019-01-16 | 590985 | 9.12 ppm |
2019-01-16 | 590986 | 8.40 ppm |
2019-01-16 | 590987 | 7.12 ppm |
2019-01-16 | 590988 | 9.03 ppm |
2019-01-16 | 590989 | 6.31 ppm |
2019-01-16 | 590990 | 8.11 ppm |
2019-02-18 | 590978 | 6.38 ppm |
2019-04-15 | 590979 | 4.45 ppm |
2019-04-30 | 590980 | 3.12 ppm |
2019-05-20 | 603890 | 7.92 ppm |
2019-05-20 | 603891 | 8.80 ppm |
2019-05-20 | 603892 | 6.10 ppm |
2019-05-20 | 603896 | 8.08 ppm |
2019-05-20 | 603899 | 7.69 ppm |
2019-05-21 | 603893 | 6.59 ppm |
2019-05-21 | 603894 | 5.73 ppm |
2019-05-21 | 603895 | 6.60 ppm |
2019-05-21 | 603897 | 6.03 ppm |
2019-05-21 | 603898 | 6.88 ppm |
2019-05-28 | 603062 | 4.21 ppm |
2019-05-28 | 603063 | 6.25 ppm |
2019-07-24 | 617969 | 6.92 ppm |
2019-07-24 | 617970 | 6.83 ppm |
2019-07-24 | 617971 | 7.75 ppm |
2019-07-24 | 617972 | 7.58 ppm |
2019-07-24 | 617973 | 9.23 ppm |
2019-07-24 | 617974 | 7.85 ppm |
2019-07-24 | 617975 | 7.59 ppm |
2019-07-24 | 617976 | 8.70 ppm |
2019-07-24 | 617977 | 6.29 ppm |
2019-07-24 | 617978 | 7.71 ppm |
2019-10-28 | 640417 | 7.81 ppm |
2019-10-28 | 640419 | 8.28 ppm |
2019-10-28 | 640421 | 8.83 ppm |
2019-10-28 | 640422 | 6.47 ppm |
2019-10-29 | 640414 | 6.09 ppm |
2019-10-29 | 640416 | 7.37 ppm |
2019-10-29 | 640418 | 9.52 ppm |
2019-10-29 | 640420 | 6.53 ppm |
2019-10-29 | 640423 | 7.98 ppm |
2019-12-03 | 638893 | 6.80 ppm |