Nitrate and nitrite
Brookwood Comm. Water System
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.
283
Samples
0
Samples exceeding legal limit (MCL)
259
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 4.69 ppm | 50 | 45 | ND - 7.40 ppm |
| 2015 | 5.03 ppm | 45 | 40 | ND - 7.40 ppm |
| 2016 | 5.25 ppm | 50 | 47 | ND - 7.50 ppm |
| 2017 | 5.37 ppm | 48 | 46 | ND - 8.40 ppm |
| 2018 | 5.00 ppm | 46 | 42 | ND - 7.00 ppm |
| 2019 | 4.74 ppm | 44 | 39 | ND - 7.70 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 |
|---|---|---|
| 2014-01-06 | C315486-01 | 6.40 ppm |
| 2014-01-06 | C315495-01 | 4.20 ppm |
| 2014-01-06 | C315496-01 | ND |
| 2014-01-06 | C315499-01 | ND |
| 2014-01-06 | C315499-02 | ND |
| 2014-01-07 | C315494-02 | 2.90 ppm |
| 2014-01-07 | C315479-01 | 3.70 ppm |
| 2014-01-07 | C315480-01 | 2.30 ppm |
| 2014-01-07 | C315491-01 | ND |
| 2014-01-07 | C315492-02 | 5.30 ppm |
| 2014-01-08 | C315484-01 | 6.30 ppm |
| 2014-01-08 | C315488-01 | 7.00 ppm |
| 2014-01-08 | C315494-01 | 3.40 ppm |
| 2014-01-08 | C400240-01 | 6.40 ppm |
| 2014-01-13 | C315476-01 | 1.10 ppm |
| 2014-01-13 | C315477-01 | 4.30 ppm |
| 2014-01-13 | C315478-01 | 6.90 ppm |
| 2014-01-13 | C315478-02 | 2.90 ppm |
| 2014-01-13 | C315482-01 | 5.10 ppm |
| 2014-01-13 | C315490-01 | 7.00 ppm |
| 2014-01-13 | C315497-01 | ND |
| 2014-04-16 | C402195-01 | 4.50 ppm |
| 2014-05-14 | C402196-01 | 6.50 ppm |
| 2014-05-14 | C402199-01 | 6.80 ppm |
| 2014-05-15 | C402191-01 | 4.50 ppm |
| 2014-05-15 | C402192-01 | 6.80 ppm |
| 2014-05-15 | C402198-01 | 7.40 ppm |
| 2014-05-15 | C402201-01 | 6.70 ppm |
| 2014-05-15 | C402202-01 | 6.50 ppm |
| 2014-05-15 | C405176-01 | 3.10 ppm |
| 2014-06-24 | C406250-01 | 1.20 ppm |
| 2014-08-25 | C407362-01 | 6.30 ppm |
| 2014-09-08 | C407342-01 | 3.00 ppm |
| 2014-09-08 | C407350-01 | 6.70 ppm |
| 2014-09-08 | C407353-01 | 7.20 ppm |
| 2014-09-08 | C407355-01 | 6.90 ppm |
| 2014-09-08 | C407357-01 | 6.00 ppm |
| 2014-09-11 | C407340-01 | 3.80 ppm |
| 2014-09-11 | C407348-01 | 5.60 ppm |
| 2014-09-11 | C411673-01 | 7.40 ppm |
| 2014-09-17 | C411405-01 | 1.60 ppm |
| 2014-10-16 | C411539-01 | 2.90 ppm |
| 2014-10-16 | C411545-01 | 6.70 ppm |
| 2014-10-16 | C411547-01 | 7.00 ppm |
| 2014-10-16 | C411548-01 | 7.00 ppm |
| 2014-10-16 | C411549-01 | 6.00 ppm |
| 2014-10-21 | C411552-01 | 6.90 ppm |
| 2014-10-28 | C411543-01 | 3.90 ppm |
| 2014-10-28 | C413725-01 | 7.30 ppm |
| 2014-12-16 | C413976-01 | 3.30 ppm |
| 2015-01-06 | 6.40 ppm | |
| 2015-01-06 | 5.00 ppm | |
| 2015-01-06 | 4.30 ppm | |
| 2015-01-06 | 3.50 ppm | |
| 2015-01-06 | 4.80 ppm | |
| 2015-01-06 | 2.60 ppm | |
| 2015-01-06 | ND | |
| 2015-01-06 | ND | |
| 2015-01-07 | 6.00 ppm | |
| 2015-01-07 | ND | |
| 2015-01-07 | 4.00 ppm | |
| 2015-01-07 | 7.10 ppm | |
| 2015-01-08 | 4.40 ppm | |
| 2015-01-08 | 4.70 ppm | |
| 2015-01-08 | 6.70 ppm | |
| 2015-01-08 | 7.40 ppm | |
| 2015-01-08 | ND | |
| 2015-01-20 | 3.10 ppm | |
| 2015-01-27 | 2.90 ppm | |
| 2015-01-27 | ND | |
| 2015-01-27 | 3.80 ppm | |
| 2015-04-28 | 6.90 ppm | |
| 2015-04-28 | 4.40 ppm | |
| 2015-04-29 | 7.00 ppm | |
| 2015-04-29 | 7.10 ppm | |
| 2015-04-30 | 6.30 ppm | |
| 2015-05-18 | 5.10 ppm | |
| 2015-06-15 | 6.50 ppm | |
| 2015-06-30 | 3.30 ppm | |
| 2015-07-22 | 6.60 ppm | |
| 2015-07-22 | 5.70 ppm | |
| 2015-07-27 | 6.70 ppm | |
| 2015-07-27 | 7.10 ppm | |
| 2015-07-27 | 5.90 ppm | |
| 2015-09-09 | 7.40 ppm | |
| 2015-09-14 | 7.00 ppm | |
| 2015-09-29 | 6.40 ppm | |
| 2015-10-12 | 7.00 ppm | |
| 2015-10-12 | 7.20 ppm | |
| 2015-10-12 | 7.30 ppm | |
| 2015-10-12 | 6.10 ppm | |
| 2015-11-04 | 6.70 ppm | |
| 2015-11-30 | 6.50 ppm | |
| 2015-12-02 | 4.90 ppm | |
| 2015-12-02 | 4.70 ppm | |
| 2016-03-01 | C515367-01 | 2.50 ppm |
| 2016-03-01 | C515376-01 | 7.40 ppm |
| 2016-03-01 | C515377-01 | 6.40 ppm |
| 2016-03-01 | C515379-01 | 6.40 ppm |
| 2016-03-01 | C515383-01 | 5.30 ppm |
| 2016-03-01 | C515369-01 | 3.10 ppm |
| 2016-03-02 | C515381-01 | 4.80 ppm |
| 2016-03-02 | C515381-02 | 3.60 ppm |
| 2016-03-02 | C515386-01 | ND |
| 2016-03-02 | CZ02946-01 | 7.10 ppm |
| 2016-03-15 | C515378-01 | 4.90 ppm |
| 2016-03-15 | C515384-01 | ND |
| 2016-03-15 | C515385-01 | 4.90 ppm |
| 2016-03-16 | CZ03957-01 | ND |
| 2016-03-17 | C515371-01 | 3.80 ppm |
| 2016-03-21 | C515374-01 | 7.20 ppm |
| 2016-03-23 | CZ04273-01 | 7.50 ppm |
| 2016-03-24 | C515363-01 | 2.80 ppm |
| 2016-03-24 | C515365-01 | 4.50 ppm |
| 2016-03-24 | C515370-01 | 6.30 ppm |
| 2016-03-24 | C515373-01 | 3.70 ppm |
| 2016-05-03 | CZ02637-01 | 6.30 ppm |
| 2016-05-03 | CZ02640-01 | 7.40 ppm |
| 2016-05-03 | CZ02643-01 | 5.70 ppm |
| 2016-05-03 | CZ02643-02 | 6.60 ppm |
| 2016-05-03 | CZ05299-01 | 5.00 ppm |
| 2016-05-09 | CZ02642-01 | 4.90 ppm |
| 2016-05-10 | CZ05298-01 | 5.00 ppm |
| 2016-05-11 | CZ02636-01 | 4.40 ppm |
| 2016-05-16 | CZ02639-01 | 6.30 ppm |
| 2016-05-18 | CZ02633-01 | 2.60 ppm |
| 2016-07-28 | CZ07700-01 | 6.80 ppm |
| 2016-07-28 | CZ07706-01 | 3.00 ppm |
| 2016-07-28 | CZ07709-01 | 4.80 ppm |
| 2016-07-28 | CZ07714-01 | 6.90 ppm |
| 2016-07-28 | CZ07720-01 | 6.80 ppm |
| 2016-07-28 | CZ07720-02 | 7.00 ppm |
| 2016-07-28 | CZ07724-01 | 4.90 ppm |
| 2016-08-03 | CZ07711-01 | 7.00 ppm |
| 2016-08-03 | CZ07716-01 | 7.30 ppm |
| 2016-08-03 | CZ07718-01 | 5.30 ppm |
| 2016-10-04 | CZ12553-01 | 7.30 ppm |
| 2016-10-04 | CZ12555-01 | 7.00 ppm |
| 2016-10-04 | CZ12556-01 | 6.90 ppm |
| 2016-10-04 | CZ12557-01 | 7.20 ppm |
| 2016-10-04 | CZ12558-01 | 5.60 ppm |
| 2016-10-05 | CZ12560-01 | 7.20 ppm |
| 2016-10-05 | CZ12560-02 | 7.40 ppm |
| 2016-10-05 | CZ12564-01 | 5.00 ppm |
| 2016-10-06 | CZ12554-01 | 2.90 ppm |
| 2017-01-31 | CZ17228-01 | ND |
| 2017-01-31 | CZ17244-01 | 4.10 ppm |
| 2017-01-31 | CZ17244-02 | 3.80 ppm |
| 2017-01-31 | CZ17250-01 | 1.10 ppm |
| 2017-01-31 | CZ17250-02 | 1.20 ppm |
| 2017-02-01 | CZ17236-01 | 6.90 ppm |
| 2017-02-01 | CZ17237-01 | 6.20 ppm |
| 2017-02-01 | CZ17239-01 | 7.10 ppm |
| 2017-02-01 | CZ17240-01 | 5.90 ppm |
| 2017-02-01 | CZ17248-01 | 4.40 ppm |
| 2017-02-01 | CZ17231-01 | 3.00 ppm |
| 2017-02-01 | CZ17231-02 | 6.80 ppm |
| 2017-02-01 | CZ17234-01 | 2.90 ppm |
| 2017-02-08 | CA01625-01 | 5.60 ppm |
| 2017-02-08 | CZ17229-01 | 3.80 ppm |
| 2017-02-08 | CZ17233-01 | 3.80 ppm |
| 2017-02-08 | CZ17241-01 | 3.40 ppm |
| 2017-02-08 | CZ17242-01 | 7.80 ppm |
| 2017-02-08 | CZ17242-02 | 7.90 ppm |
| 2017-02-08 | CZ17247-01 | ND |
| 2017-06-01 | CA02285-01 | 7.10 ppm |
| 2017-06-01 | CA02287-01 | 7.00 ppm |
| 2017-06-01 | CA02289-01 | 7.30 ppm |
| 2017-06-01 | CA02291-01 | 7.60 ppm |
| 2017-06-06 | CA02281-01 | 7.10 ppm |
| 2017-06-06 | CA02283-01 | 3.10 ppm |
| 2017-06-06 | CA02292-01 | 7.40 ppm |
| 2017-06-06 | CA02296-01 | 5.40 ppm |
| 2017-06-21 | CA09641-01 | 8.40 ppm |
| 2017-08-16 | CA07506-02 | 5.90 ppm |
| 2017-08-17 | CA07510-01 | 4.60 ppm |
| 2017-08-17 | CA12574-01 | 6.30 ppm |
| 2017-08-17 | CA07495-01 | 6.30 ppm |
| 2017-08-17 | CA07499-01 | 6.90 ppm |
| 2017-08-18 | CA07486-01 | 6.80 ppm |
| 2017-08-18 | CA07501-01 | 6.50 ppm |
| 2017-08-24 | CA07493-01 | 5.90 ppm |
| 2017-09-13 | CA07498-01 | 6.50 ppm |
| 2017-09-27 | CA07490-01 | 2.50 ppm |
| 2017-10-26 | CA14529-01 | 4.50 ppm |
| 2017-10-31 | CA12707-01 | 7.40 ppm |
| 2017-11-01 | CA12708-01 | 6.50 ppm |
| 2017-11-01 | CA12705-01 | 6.20 ppm |
| 2017-11-16 | CA12699-01 | 6.70 ppm |
| 2017-11-22 | CA12712-01 | 6.80 ppm |
| 2017-11-22 | CA12712-02 | 5.60 ppm |
| 2017-11-22 | CA12715-01 | 4.60 ppm |
| 2017-11-29 | CA12709-01 | 5.00 ppm |
| 2018-01-24 | CA17843-01 | 6.50 ppm |
| 2018-01-24 | CA17846-01 | 4.20 ppm |
| 2018-01-24 | CA17848-01 | 3.80 ppm |
| 2018-01-24 | CA17848-02 | 3.70 ppm |
| 2018-01-24 | CA17853-01 | ND |
| 2018-01-24 | CA17853-02 | ND |
| 2018-01-25 | CA17841-01 | 7.00 ppm |
| 2018-01-25 | CA17852-01 | 4.20 ppm |
| 2018-01-30 | CA17847-01 | 6.60 ppm |
| 2018-01-30 | CA17847-02 | 5.60 ppm |
| 2018-01-30 | CA17850-01 | 4.80 ppm |
| 2018-01-30 | CA17851-01 | ND |
| 2018-01-31 | CA17831-01 | ND |
| 2018-01-31 | CA17832-01 | 2.90 ppm |
| 2018-01-31 | CA17834-01 | 2.90 ppm |
| 2018-01-31 | CA17834-02 | 6.70 ppm |
| 2018-01-31 | CA17837-01 | 4.10 ppm |
| 2018-01-31 | CA17840-01 | 6.40 ppm |
| 2018-01-31 | CA17844-01 | 5.30 ppm |
| 2018-02-01 | CA17836-01 | 3.40 ppm |
| 2018-04-19 | CB02551-01 | 6.60 ppm |
| 2018-05-16 | CB02557-01 | 6.50 ppm |
| 2018-05-16 | CB02559-01 | 6.50 ppm |
| 2018-05-16 | CB02561-01 | 6.70 ppm |
| 2018-05-16 | CB02564-01 | 5.90 ppm |
| 2018-05-16 | CB02566-02 | 5.80 ppm |
| 2018-05-16 | CB02570-01 | 4.60 ppm |
| 2018-05-16 | CB07406-01 | 6.90 ppm |
| 2018-06-07 | CB02555-01 | 6.60 ppm |
| 2018-07-17 | CB07841-01 | 2.70 ppm |
| 2018-07-17 | CB07846-01 | 6.40 ppm |
| 2018-07-18 | CB07848-01 | 5.10 ppm |
| 2018-07-18 | CB07849-01 | 6.50 ppm |
| 2018-07-18 | CB07849-02 | 5.40 ppm |
| 2018-07-19 | CB07847-01 | 6.50 ppm |
| 2018-07-23 | CB07843-01 | 4.70 ppm |
| 2018-07-23 | CB07844-01 | 6.40 ppm |
| 2018-07-25 | CB07838-01 | 6.80 ppm |
| 2018-10-16 | CB13069-01 | 6.40 ppm |
| 2018-10-16 | CB13073-01 | 4.00 ppm |
| 2018-10-17 | CB13075-01 | 5.90 ppm |
| 2018-10-17 | CB13079-01 | 5.60 ppm |
| 2018-10-17 | CB13081-01 | 5.00 ppm |
| 2018-10-24 | CB13077-01 | 6.60 ppm |
| 2018-10-24 | CB13084-01 | 6.50 ppm |
| 2018-10-24 | CB13084-02 | 5.40 ppm |
| 2019-01-15 | CB17905-01 | 6.30 ppm |
| 2019-01-15 | CB17905-02 | 6.10 ppm |
| 2019-01-17 | CB17895-01 | 3.00 ppm |
| 2019-01-17 | CB17896-01 | 4.10 ppm |
| 2019-01-17 | CB17899-01 | 5.60 ppm |
| 2019-01-17 | CB17900-01 | 6.40 ppm |
| 2019-01-17 | CB17903-01 | 4.80 ppm |
| 2019-01-22 | CB17902-01 | 2.50 ppm |
| 2019-01-22 | CB17906-01 | 3.10 ppm |
| 2019-01-22 | CB17906-02 | 3.50 ppm |
| 2019-01-23 | CB17891-01 | 3.80 ppm |
| 2019-01-23 | CB17893-01 | 2.90 ppm |
| 2019-01-23 | CB17893-02 | 6.90 ppm |
| 2019-01-24 | CB17908-01 | ND |
| 2019-01-29 | CB17910-01 | ND |
| 2019-01-29 | CB17910-02 | ND |
| 2019-01-30 | CB17890-01 | ND |
| 2019-02-07 | CB17904-01 | ND |
| 2019-02-20 | CB17909-01 | 3.30 ppm |
| 2019-04-30 | CC02975-01 | 6.00 ppm |
| 2019-05-01 | CC02968-01 | 4.40 ppm |
| 2019-05-02 | CC02974-01 | 4.70 ppm |
| 2019-05-07 | CC02971-01 | 6.40 ppm |
| 2019-05-07 | CC02972-01 | 6.30 ppm |
| 2019-05-08 | CC02969-01 | 6.10 ppm |
| 2019-05-15 | CC02965-01 | 7.50 ppm |
| 2019-05-28 | CC08579-01 | 7.70 ppm |
| 2019-08-27 | CC09182-01 | 6.20 ppm |
| 2019-08-28 | CC09169-01 | 6.70 ppm |
| 2019-08-28 | CC09177-01 | 4.50 ppm |
| 2019-08-28 | CC09188-01 | 6.10 ppm |
| 2019-08-28 | CC09188-02 | 7.10 ppm |
| 2019-08-28 | CC09192-01 | 4.80 ppm |
| 2019-09-03 | CC09186-01 | 4.60 ppm |
| 2019-09-04 | CC09174-01 | 2.80 ppm |
| 2019-09-04 | CC09179-01 | 6.20 ppm |
| 2019-09-04 | CC09184-01 | 6.00 ppm |
| 2019-10-22 | CC14182-01 | 6.60 ppm |
| 2019-10-23 | CC14185-01 | 6.30 ppm |
| 2019-10-23 | CC14186-01 | 6.20 ppm |
| 2019-10-23 | CC14187-01 | 6.20 ppm |
| 2019-10-29 | CC14188-01 | 5.00 ppm |
| 2019-10-29 | CC14190-01 | 6.40 ppm |
| 2019-10-29 | CC14190-02 | 5.60 ppm |