Nitrate and nitrite
Las Vegas Valley Water District
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.
335
Samples
0
Samples exceeding legal limit (MCL)
335
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 1.64 ppm | 64 | 64 | 0.390 ppm - 5.20 ppm |
| 2015 | 1.33 ppm | 19 | 19 | 0.370 ppm - 3.20 ppm |
| 2016 | 2.01 ppm | 75 | 75 | 0.340 ppm - 7.49 ppm |
| 2017 | 1.79 ppm | 66 | 66 | 0.346 ppm - 7.78 ppm |
| 2018 | 1.97 ppm | 61 | 61 | 0.339 ppm - 5.33 ppm |
| 2019 | 1.74 ppm | 50 | 50 | 0.435 ppm - 6.05 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 |
|---|---|---|
| 2014-01-29 | 14010386-001 | 0.860 ppm |
| 2014-03-11 | 14030130-001 | 5.00 ppm |
| 2014-05-12 | 14050125-001 | 1.000 ppm |
| 2014-05-12 | 14050125-002 | 1.40 ppm |
| 2014-05-12 | 14050125-004 | 1.80 ppm |
| 2014-05-12 | 14050129-002 | 0.390 ppm |
| 2014-05-12 | 14050129-001 | 0.520 ppm |
| 2014-05-12 | 14050129-005 | 0.520 ppm |
| 2014-05-12 | 14050129-003 | 1.20 ppm |
| 2014-05-12 | 14050129-004 | 0.780 ppm |
| 2014-05-13 | 14050166-001 | 1.000 ppm |
| 2014-05-13 | 14050166-002 | 1.70 ppm |
| 2014-05-13 | 14050166-011 | 1.10 ppm |
| 2014-05-13 | 14050181-003 | 0.480 ppm |
| 2014-05-13 | 14050181-002 | 0.770 ppm |
| 2014-05-13 | 14050181-011 | 0.390 ppm |
| 2014-05-13 | 14050181-001 | 0.790 ppm |
| 2014-05-13 | 14050181-012 | 1.10 ppm |
| 2014-05-14 | 14050257-001 | 5.20 ppm |
| 2014-05-14 | 14050257-011 | 1.90 ppm |
| 2014-05-14 | 14050257-012 | 1.30 ppm |
| 2014-06-03 | 14050494-001 | 3.90 ppm |
| 2014-06-03 | 14050494-003 | 3.90 ppm |
| 2014-06-03 | 14050494-002 | 4.80 ppm |
| 2014-06-03 | 14050513-001 | 2.20 ppm |
| 2014-06-03 | 14050513-002 | 0.800 ppm |
| 2014-06-03 | 14050513-003 | 1.10 ppm |
| 2014-06-04 | 14060076-001 | 3.40 ppm |
| 2014-06-04 | 14060081-001 | 2.40 ppm |
| 2014-06-04 | 14060081-002 | 1.10 ppm |
| 2014-06-04 | 14060081-003 | 1.40 ppm |
| 2014-06-04 | 14060076-003 | 1.20 ppm |
| 2014-06-04 | 14060076-002 | 0.500 ppm |
| 2014-06-09 | 14060160-001 | 0.831 ppm |
| 2014-06-09 | 14060160-002 | 0.534 ppm |
| 2014-06-09 | 14060160-003 | 0.416 ppm |
| 2014-06-10 | 14060170-002 | 4.17 ppm |
| 2014-06-10 | 14060170-001 | 2.69 ppm |
| 2014-06-10 | 14060165-002 | 0.610 ppm |
| 2014-06-10 | 14060170-003 | 0.658 ppm |
| 2014-06-10 | 14060165-003 | 0.589 ppm |
| 2014-06-10 | 14060165-001 | 1.01 ppm |
| 2014-06-11 | 14060242-003 | 1.90 ppm |
| 2014-06-11 | 14060242-002 | 1.40 ppm |
| 2014-06-11 | 14060242-001 | 1.50 ppm |
| 2014-06-11 | 14060230-003 | 1.30 ppm |
| 2014-06-11 | 14060230-002 | 2.20 ppm |
| 2014-06-11 | 14060230-001 | 0.450 ppm |
| 2014-06-16 | 14060276-002 | 1.80 ppm |
| 2014-06-16 | 14060276-001 | 1.40 ppm |
| 2014-06-16 | 14060276-003 | 0.840 ppm |
| 2014-06-16 | 14060271-003 | 0.970 ppm |
| 2014-06-16 | 14060271-002 | 2.80 ppm |
| 2014-06-16 | 14060271-001 | 0.440 ppm |
| 2014-06-17 | 14060388-002 | 1.000 ppm |
| 2014-06-17 | 14060388-001 | 1.10 ppm |
| 2014-06-17 | 14060393-003 | 0.690 ppm |
| 2014-06-17 | 14060393-001 | 2.80 ppm |
| 2014-06-17 | 14060393-002 | 2.60 ppm |
| 2014-06-17 | 14060388-003 | 4.50 ppm |
| 2014-06-18 | 14060398-002 | 1.60 ppm |
| 2014-06-18 | 14060398-001 | 1.90 ppm |
| 2014-06-25 | 14060526-001 | 3.20 ppm |
| 2014-09-23 | 14090415-001 | 0.870 ppm |
| 2015-05-11 | 15050112-004 | 0.870 ppm |
| 2015-05-11 | 15050112-003 | 1.70 ppm |
| 2015-05-11 | 15050112-002 | 0.940 ppm |
| 2015-05-11 | 15050112-001 | 1.90 ppm |
| 2015-05-11 | 15050112-005 | 3.10 ppm |
| 2015-05-11 | 15050113-005 | 3.20 ppm |
| 2015-05-11 | 15050113-001 | 0.550 ppm |
| 2015-05-11 | 15050113-003 | 0.720 ppm |
| 2015-05-11 | 15050113-004 | 1.10 ppm |
| 2015-05-11 | 15050113-002 | 0.780 ppm |
| 2015-05-12 | 15050155-003 | 2.30 ppm |
| 2015-05-12 | 15050155-001 | 1.20 ppm |
| 2015-05-12 | 15050155-004 | 1.20 ppm |
| 2015-05-12 | 15050149-002 | 1.40 ppm |
| 2015-05-12 | 15050149-001 | 0.830 ppm |
| 2015-05-12 | 15050149-003 | 0.550 ppm |
| 2015-05-12 | 15050149-004 | 0.370 ppm |
| 2015-05-12 | 15050155-005 | 2.10 ppm |
| 2015-05-13 | 15050185-002 | 0.460 ppm |
| 2016-05-09 | S1601630001 | 2.40 ppm |
| 2016-05-09 | S1601630002 | 0.921 ppm |
| 2016-05-09 | S1601630003 | 1.74 ppm |
| 2016-05-09 | S1601630005 | 7.41 ppm |
| 2016-05-09 | S1601630004 | 0.549 ppm |
| 2016-05-09 | S1601629003 | 0.418 ppm |
| 2016-05-09 | S1601629002 | 0.356 ppm |
| 2016-05-09 | S1601629001 | 0.365 ppm |
| 2016-05-09 | S1601629005 | 1.03 ppm |
| 2016-05-09 | S1601629004 | 0.679 ppm |
| 2016-05-10 | S1601673001 | 0.340 ppm |
| 2016-05-10 | S1601673004 | 1.01 ppm |
| 2016-05-10 | S1601673005 | 1.24 ppm |
| 2016-05-10 | S1601673002 | 0.421 ppm |
| 2016-05-10 | S1601673003 | 0.463 ppm |
| 2016-05-31 | S1601676001 | 2.35 ppm |
| 2016-05-31 | S1601676003 | 5.27 ppm |
| 2016-05-31 | S1601676005 | 3.04 ppm |
| 2016-05-31 | S1601676004 | 2.72 ppm |
| 2016-05-31 | S1601676002 | 2.63 ppm |
| 2016-05-31 | S1601677004 | 0.577 ppm |
| 2016-05-31 | S1601677005 | 0.673 ppm |
| 2016-05-31 | S1601677001 | 1.45 ppm |
| 2016-05-31 | S1601678001 | 0.541 ppm |
| 2016-05-31 | S1601678002 | 0.424 ppm |
| 2016-05-31 | S1601677002 | 0.527 ppm |
| 2016-05-31 | S1601677003 | 0.509 ppm |
| 2016-05-31 | S1601678003 | 1.31 ppm |
| 2016-05-31 | S1601678005 | 0.897 ppm |
| 2016-05-31 | S1601678004 | 0.796 ppm |
| 2016-06-01 | S1602027001 | 3.61 ppm |
| 2016-06-01 | S1602027002 | 1.56 ppm |
| 2016-06-01 | S1601679001 | 4.81 ppm |
| 2016-06-01 | S1601679002 | 4.12 ppm |
| 2016-06-01 | S1602027003 | 2.06 ppm |
| 2016-06-01 | S1601679003 | 4.17 ppm |
| 2016-06-01 | S1601679004 | 4.10 ppm |
| 2016-06-01 | S1601789004 | 1.47 ppm |
| 2016-06-01 | S1601789001 | 0.748 ppm |
| 2016-06-01 | S1601789002 | 1.35 ppm |
| 2016-06-01 | S1601789003 | 0.937 ppm |
| 2016-06-02 | S1603281002 | 7.49 ppm |
| 2016-06-02 | S1603281001 | 2.62 ppm |
| 2016-06-02 | S1601922001 | 0.901 ppm |
| 2016-06-02 | S1601922003 | 1.24 ppm |
| 2016-06-07 | S1602020005 | 2.07 ppm |
| 2016-06-07 | S1602020002 | 1.48 ppm |
| 2016-06-07 | S1602020004 | 1.69 ppm |
| 2016-06-07 | S160202004 | 1.69 ppm |
| 2016-06-07 | S1602020003 | 0.974 ppm |
| 2016-06-07 | S1602020001 | 2.15 ppm |
| 2016-06-07 | S1602105004 | 1.52 ppm |
| 2016-06-07 | S1602105003 | 2.18 ppm |
| 2016-06-07 | S1602105002 | 2.75 ppm |
| 2016-06-07 | S1602020006 | 5.39 ppm |
| 2016-06-07 | S1602105005 | 0.576 ppm |
| 2016-06-07 | S1602105001 | 3.00 ppm |
| 2016-06-13 | S1602126002 | 1.13 ppm |
| 2016-06-13 | S1602126004 | 2.03 ppm |
| 2016-06-13 | S1602126001 | 1.55 ppm |
| 2016-06-13 | S1602126003 | 1.61 ppm |
| 2016-06-13 | S1602187001 | 1.19 ppm |
| 2016-06-13 | S1602187002 | 0.709 ppm |
| 2016-06-16 | S1602188003 | 2.75 ppm |
| 2016-06-16 | S1602188001 | 1.06 ppm |
| 2016-06-16 | S1602188002 | 3.14 ppm |
| 2016-07-05 | S1602800001 | 4.44 ppm |
| 2016-07-21 | S1603099001 | 5.32 ppm |
| 2016-08-03 | S1603477001 | 6.47 ppm |
| 2016-08-03 | S1603477002 | 0.920 ppm |
| 2016-10-10 | S1604713001 | 1.02 ppm |
| 2016-10-10 | S1604713002 | 0.656 ppm |
| 2016-10-10 | S1604713003 | 0.472 ppm |
| 2016-10-10 | S1604713004 | 1.29 ppm |
| 2016-11-29 | S1606610001 | 5.34 ppm |
| 2017-01-02 | S1606597001 | 5.23 ppm |
| 2017-01-25 | S1606917001 | 1.34 ppm |
| 2017-05-01 | S1702783001 | 2.35 ppm |
| 2017-05-08 | S1703312001 | 0.906 ppm |
| 2017-05-08 | S1703196002 | 2.37 ppm |
| 2017-05-08 | S1703196004 | 1.000 ppm |
| 2017-05-08 | S1703196003 | 7.22 ppm |
| 2017-05-08 | S1703195002 | 0.347 ppm |
| 2017-05-08 | S1703195004 | 1.27 ppm |
| 2017-05-08 | S1703195003 | 1.42 ppm |
| 2017-05-08 | S1703195005 | 1.000 ppm |
| 2017-05-08 | S1703195001 | 0.416 ppm |
| 2017-05-09 | S1703308001 | 0.905 ppm |
| 2017-05-09 | S1703308003 | 1.46 ppm |
| 2017-05-09 | S1703308002 | 0.439 ppm |
| 2017-05-09 | S1703183004 | 3.64 ppm |
| 2017-05-09 | S1703183003 | 1.63 ppm |
| 2017-05-09 | S1703308004 | 0.924 ppm |
| 2017-05-09 | S1703183001 | 0.346 ppm |
| 2017-05-09 | S1703183002 | 0.936 ppm |
| 2017-05-10 | S1703184005 | 0.874 ppm |
| 2017-05-10 | S1703184003 | 0.500 ppm |
| 2017-05-15 | S1703185003 | 0.836 ppm |
| 2017-05-15 | S1703185001 | 0.409 ppm |
| 2017-05-15 | S1703185002 | 1.03 ppm |
| 2017-06-05 | S1703270003 | 1.94 ppm |
| 2017-06-05 | S1703270001 | 4.90 ppm |
| 2017-06-05 | S1703270002 | 4.17 ppm |
| 2017-06-05 | S1703431002 | 3.23 ppm |
| 2017-06-05 | S1703431001 | 2.94 ppm |
| 2017-06-05 | S1703431003 | 2.47 ppm |
| 2017-06-05 | S1703586001 | 1.31 ppm |
| 2017-06-05 | S1703586003 | 0.669 ppm |
| 2017-06-05 | S1703586002 | 0.466 ppm |
| 2017-06-06 | S1703808001 | 0.749 ppm |
| 2017-06-06 | S1703808002 | 1.44 ppm |
| 2017-06-06 | S1703808003 | 0.959 ppm |
| 2017-06-06 | S1703735001 | 0.400 ppm |
| 2017-06-06 | S1703735003 | 0.482 ppm |
| 2017-06-06 | S1703735002 | 0.852 ppm |
| 2017-06-07 | S1703809001 | 1.55 ppm |
| 2017-06-07 | S1704004001 | 3.22 ppm |
| 2017-06-07 | S1704004002 | 3.92 ppm |
| 2017-06-07 | S1704003001 | 0.503 ppm |
| 2017-06-12 | S1703811001 | 1.13 ppm |
| 2017-06-12 | S1703813002 | 1.10 ppm |
| 2017-06-12 | S1703811002 | 0.683 ppm |
| 2017-06-12 | S1703812001 | 1.96 ppm |
| 2017-06-12 | S1703810002 | 1.43 ppm |
| 2017-06-12 | S1703810003 | 1.58 ppm |
| 2017-06-12 | S1703813001 | 0.914 ppm |
| 2017-06-12 | S1703810001 | 2.04 ppm |
| 2017-06-12 | S1703812002 | 1.45 ppm |
| 2017-06-14 | S1703814003 | 2.36 ppm |
| 2017-06-14 | S1703814001 | 2.72 ppm |
| 2017-06-14 | S1703814002 | 2.14 ppm |
| 2017-06-14 | S1703815002 | 0.611 ppm |
| 2017-06-14 | S1703815004 | 1.24 ppm |
| 2017-06-14 | S1703815003 | 0.465 ppm |
| 2017-06-27 | S1703816001 | 3.16 ppm |
| 2017-07-19 | S1704278001 | 1.65 ppm |
| 2017-07-24 | S1704294001 | 2.01 ppm |
| 2017-08-07 | S1704449001 | 7.78 ppm |
| 2017-08-22 | S1705156001 | 3.78 ppm |
| 2017-08-29 | S1705295001 | 1.83 ppm |
| 2017-10-11 | S1706804001 | 1.14 ppm |
| 2018-05-07 | S1803041001 | 0.931 ppm |
| 2018-05-07 | S1803041002 | 2.47 ppm |
| 2018-05-07 | S1803041003 | 0.772 ppm |
| 2018-05-07 | S1803041004 | 0.948 ppm |
| 2018-05-07 | S1803041005 | 0.383 ppm |
| 2018-05-07 | S1803041006 | 0.671 ppm |
| 2018-05-07 | S1803044001 | 0.348 ppm |
| 2018-05-07 | S1803044002 | 1.48 ppm |
| 2018-05-07 | S1803044003 | 1.28 ppm |
| 2018-05-07 | S1803044004 | 0.355 ppm |
| 2018-05-07 | S1803044005 | 0.339 ppm |
| 2018-05-07 | S1803044006 | 1.90 ppm |
| 2018-05-31 | S1803042001 | 0.847 ppm |
| 2018-05-31 | S1803042002 | 2.25 ppm |
| 2018-06-05 | S1803128001 | 3.34 ppm |
| 2018-06-05 | S1803128002 | 1.97 ppm |
| 2018-06-05 | S1803128003 | 1.67 ppm |
| 2018-06-05 | S1803809001 | 2.88 ppm |
| 2018-06-05 | S1803809002 | 1.74 ppm |
| 2018-06-05 | S1803809003 | 0.970 ppm |
| 2018-06-05 | S1803809004 | 0.804 ppm |
| 2018-06-06 | S1803043001 | 2.23 ppm |
| 2018-06-06 | S1803043002 | 1.59 ppm |
| 2018-06-06 | S1803043003 | 2.41 ppm |
| 2018-06-06 | S1803043004 | 4.81 ppm |
| 2018-06-06 | S1803153001 | 0.960 ppm |
| 2018-06-06 | S1803153002 | 0.497 ppm |
| 2018-06-06 | S1803153003 | 0.502 ppm |
| 2018-06-06 | S1803153004 | 1.07 ppm |
| 2018-06-06 | S1803153005 | 1.64 ppm |
| 2018-06-07 | S1803172001 | 0.568 ppm |
| 2018-06-07 | S1803172002 | 0.488 ppm |
| 2018-06-07 | S1803172004 | 0.680 ppm |
| 2018-06-13 | S1803968001 | 3.96 ppm |
| 2018-06-13 | S1803968002 | 3.71 ppm |
| 2018-06-14 | S1803780001 | 1.71 ppm |
| 2018-06-14 | S1803780002 | 5.33 ppm |
| 2018-06-14 | S1803780003 | 5.08 ppm |
| 2018-06-14 | S1803780004 | 3.63 ppm |
| 2018-06-14 | S1803780005 | 4.55 ppm |
| 2018-06-19 | S1803748001 | 1.67 ppm |
| 2018-06-19 | S1803748002 | 2.99 ppm |
| 2018-06-19 | S1803748003 | 1.85 ppm |
| 2018-06-19 | S1803748004 | 2.25 ppm |
| 2018-06-19 | S1803748005 | 0.938 ppm |
| 2018-06-21 | S1804147001 | 0.445 ppm |
| 2018-06-21 | S1804147002 | 0.468 ppm |
| 2018-06-26 | S1804256001 | 1.21 ppm |
| 2018-06-26 | S1804256002 | 1.77 ppm |
| 2018-06-26 | S1804256003 | 1.23 ppm |
| 2018-06-26 | S1804256004 | 0.690 ppm |
| 2018-06-26 | S1804256005 | 2.16 ppm |
| 2018-06-26 | S1804256006 | 1.59 ppm |
| 2018-06-27 | S1804257001 | 2.64 ppm |
| 2018-06-27 | S1804257002 | 3.80 ppm |
| 2018-06-27 | S1804257003 | 1.06 ppm |
| 2018-07-03 | S1803797001 | 0.419 ppm |
| 2018-07-18 | S1804258001 | 5.23 ppm |
| 2018-07-18 | S1804258002 | 5.13 ppm |
| 2018-07-24 | S1804259001 | 3.56 ppm |
| 2018-08-29 | S1804582001 | 5.14 ppm |
| 2019-04-01 | S1903067001 | 1.20 ppm |
| 2019-04-01 | S1903865001 | 1.91 ppm |
| 2019-04-01 | S1903865002 | 2.42 ppm |
| 2019-04-01 | S1903865003 | 1.44 ppm |
| 2019-04-01 | S1903866006 | 1.31 ppm |
| 2019-04-01 | S1903866007 | 1.15 ppm |
| 2019-04-01 | S1903866008 | 0.868 ppm |
| 2019-04-01 | S1903866009 | 1.12 ppm |
| 2019-04-02 | S1903994001 | 2.84 ppm |
| 2019-04-02 | S1903994005 | 1.98 ppm |
| 2019-04-02 | S1903994006 | 3.02 ppm |
| 2019-04-02 | S1903996001 | 2.37 ppm |
| 2019-04-02 | S1903996002 | 1.77 ppm |
| 2019-04-02 | S1903996003 | 0.719 ppm |
| 2019-04-02 | S1903996004 | 1.28 ppm |
| 2019-04-02 | S1903996005 | 2.50 ppm |
| 2019-04-02 | S1903996006 | 2.91 ppm |
| 2019-04-02 | S1904016001 | 2.34 ppm |
| 2019-04-03 | S1904030001 | 1.02 ppm |
| 2019-04-03 | S1904030002 | 1.64 ppm |
| 2019-04-30 | S1907076001 | 1.50 ppm |
| 2019-05-07 | S1907588001 | 0.990 ppm |
| 2019-05-28 | S1910429002 | 3.88 ppm |
| 2019-05-28 | S1910429003 | 5.88 ppm |
| 2019-05-28 | S1910429004 | 6.05 ppm |
| 2019-05-28 | S1910429005 | 2.70 ppm |
| 2019-05-28 | S1910431001 | 0.480 ppm |
| 2019-05-28 | S1910431002 | 0.435 ppm |
| 2019-05-28 | S1910431003 | 0.783 ppm |
| 2019-05-28 | S1910431004 | 0.642 ppm |
| 2019-05-28 | S1910431005 | 1.03 ppm |
| 2019-05-28 | S1910431006 | 3.37 ppm |
| 2019-05-29 | S1910616001 | 1.99 ppm |
| 2019-05-29 | S1910616002 | 0.946 ppm |
| 2019-05-29 | S1910616003 | 0.946 ppm |
| 2019-05-29 | S1910616004 | 0.555 ppm |
| 2019-05-29 | S1910616005 | 1.37 ppm |
| 2019-05-29 | S1910618002 | 1.07 ppm |
| 2019-05-29 | S1910618003 | 0.926 ppm |
| 2019-05-29 | S1910618004 | 1.68 ppm |
| 2019-05-29 | S1910618005 | 0.780 ppm |
| 2019-05-30 | S1911426001 | 3.62 ppm |
| 2019-05-30 | S1911426002 | 0.697 ppm |
| 2019-05-30 | S1911426003 | 0.974 ppm |
| 2019-05-30 | S1911426004 | 0.974 ppm |
| 2019-07-02 | S1916252001 | 1.81 ppm |
| 2019-07-17 | S1918267001 | 1.17 ppm |
| 2019-07-17 | S1918267002 | 1.08 ppm |
| 2019-08-20 | S1923827001 | 1.02 ppm |
| 2019-10-22 | S1951227001 | 1.84 ppm |