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EWG's Tap Water Database — 2021 UPDATE

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Chromium (hexavalent)

City of Modesto

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

MORE ABOUT THIS CONTAMINANT

 

201

Samples

0

Samples exceeding legal limit (MCL)

194

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20132.71 ppb115113ND - 7.00 ppb
20143.15 ppb8378ND - 9.60 ppb
20154.00 ppb114.00 ppb
2016N/A00N/A
20177.50 ppb117.50 ppb
2018N/A00N/A
20196.10 ppb116.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-05-02B3E0370-072.90 ppb
2013-05-02B3E0370-035.30 ppb
2013-05-02B3E0370-112.00 ppb
2013-05-02B3E0370-134.30 ppb
2013-05-02B3E0370-090.480 ppb
2013-05-02B3E0370-171.10 ppb
2013-05-02B3E0370-055.70 ppb
2013-05-02B3E0370-012.80 ppb
2013-05-02B3E0370-152.80 ppb
2013-05-07B3E0839-011.000 ppb
2013-05-07B3E0842-012.10 ppb
2013-05-07B3E0833-010.890 ppb
2013-05-07B3E0835-013.40 ppb
2013-05-07B3E0837-012.70 ppb
2013-05-13B3E1467-013.90 ppb
2013-05-13B3E1460-013.00 ppb
2013-05-13B3E1464-015.60 ppb
2013-05-13B3E1474-010.160 ppb
2013-05-13B3E1471-015.60 ppb
2013-05-14B3E1627-013.60 ppb
2013-05-14B3E1626-010.380 ppb
2013-05-14B3E1633-016.00 ppb
2013-05-14B3E1631-013.30 ppb
2013-05-14B3E1625-010.750 ppb
2013-05-20B3E2252-012.40 ppb
2013-05-20B3E2243-013.70 ppb
2013-05-20B3E2247-013.30 ppb
2013-05-20B3E2240-015.30 ppb
2013-05-20B3E2236-013.10 ppb
2013-05-20B3E2238-017.00 ppb
2013-05-21B3E2397-013.80 ppb
2013-05-21B3E2389-010.110 ppb
2013-05-21B3E2392-012.70 ppb
2013-05-21B3E2385-012.90 ppb
2013-05-21B3E2394-013.50 ppb
2013-05-22B3E2386-010.110 ppb
2013-05-28B3E3170-015.20 ppb
2013-05-29B3E3219-010.810 ppb
2013-05-29B3E3221-013.60 ppb
2013-05-29B3E3304-016.00 ppb
2013-05-29B3E3224-015.00 ppb
2013-05-30B3E3364-011.30 ppb
2013-06-24B3F2550-030.260 ppb
2013-07-08B3G0870-013.50 ppb
2013-07-08B3G0871-013.00 ppb
2013-07-08B3G0868-016.00 ppb
2013-07-08B3G0877-010.120 ppb
2013-07-08B3G0881-014.60 ppb
2013-07-08B3G0883-01ND
2013-07-08B3G0872-011.90 ppb
2013-07-08B3G0866-010.110 ppb
2013-07-08B3G0869-015.00 ppb
2013-08-08A3G2387-01A1.10 ppb
2013-08-08A3G2387-17A0.940 ppb
2013-08-08A3G2387-13A1.20 ppb
2013-08-08A3G2387-09A0.790 ppb
2013-08-08A3G2387-05A1.40 ppb
2013-08-08A3G2390-01A4.00 ppb
2013-08-08A3G2387-25A0.130 ppb
2013-08-08A3G2387-21A1.20 ppb
2013-08-08A3G2387-31A0.470 ppb
2013-08-08A3G2387-29A0.180 ppb
2013-08-08A3G2387-33A1.60 ppb
2013-11-07A3J2250-23A0.980 ppb
2013-11-07A3J2250-11A3.80 ppb
2013-11-07A3J2250-27A2.40 ppb
2013-11-07A3J2250-31A4.40 ppb
2013-11-07A3J2250-03A2.00 ppb
2013-11-07A3J2250-15A5.10 ppb
2013-11-07A3J2250-07A3.00 ppb
2013-11-07A3J2250-35A2.60 ppb
2013-11-08A3J2280-13A1.60 ppb
2013-11-08A3J2280-05A3.70 ppb
2013-11-08A3J2280-25A2.20 ppb
2013-11-08A3J2280-09A2.90 ppb
2013-11-08A3J2280-21A3.20 ppb
2013-11-08A3J2280-17A1.10 ppb
2013-11-08A3J2280-29A0.120 ppb
2013-11-08A3J2280-01A5.10 ppb
2013-11-14A3K0161-25A3.60 ppb
2013-11-14A3K0161-13A4.30 ppb
2013-11-14A3K0161-01A1.20 ppb
2013-11-14A3K0161-17A4.70 ppb
2013-11-14A3K0161-09A2.00 ppb
2013-11-14A3K0161-05AND
2013-11-14A3K0161-29A3.10 ppb
2013-11-14A3K0161-21A4.80 ppb
2013-11-14A3K0161-33A3.70 ppb
2013-11-15A3K0220-21A4.40 ppb
2013-11-15A3K0220-17A3.70 ppb
2013-11-15A3K0220-09A0.220 ppb
2013-11-15A3K0220-05A0.150 ppb
2013-11-15A3K0220-25A5.20 ppb
2013-11-15A3K0220-33A2.70 ppb
2013-11-15A3K0220-01A0.780 ppb
2013-11-15A3K0220-13A4.90 ppb
2013-11-26A3K1679-01A1.90 ppb
2013-12-19A3L0858-06A6.60 ppb
2013-12-19A3L0858-22A4.10 ppb
2013-12-19A3L0858-21A4.80 ppb
2013-12-19A3L0858-16A0.870 ppb
2013-12-19A3L0858-13A0.860 ppb
2013-12-19A3L0858-17A3.00 ppb
2013-12-19A3L0858-05A3.20 ppb
2013-12-19A3L0858-15A0.820 ppb
2013-12-19A3L0858-02A6.80 ppb
2013-12-19A3L0858-03A0.370 ppb
2013-12-19A3L0858-19A0.210 ppb
2013-12-19A3L0858-04A0.310 ppb
2013-12-19A3L0858-01A0.300 ppb
2013-12-19A3L0858-20A0.250 ppb
2013-12-19A3L0858-14A5.50 ppb
2013-12-19A3L0858-07A3.70 ppb
2013-12-19A3L0858-08A2.40 ppb
2013-12-19A3L0858-18A5.40 ppb
2014-02-06A4A1431-01A0.820 ppb
2014-02-06A4A1431-16A0.880 ppb
2014-02-06A4A1431-09A0.730 ppb
2014-02-06A4A1431-13A1.20 ppb
2014-02-06A4A1431-05A1.90 ppb
2014-02-06A4A1431-34A1.30 ppb
2014-02-06A4A1431-24A0.120 ppb
2014-02-06A4A1431-20A1.000 ppb
2014-02-06A4A1431-30A0.750 ppb
2014-02-06A4A1431-32A0.130 ppb
2014-02-06A4A1431-28A0.300 ppb
2014-09-181610-003-07425.50 ppb
2014-09-181610-008-08034.40 ppb
2014-09-181610-009-07556.10 ppb
2014-09-181610-012-07002.50 ppb
2014-09-181610-018-11355.20 ppb
2014-09-181610-027-13505.50 ppb
2014-09-181610-031-07452.60 ppb
2014-09-181610-032-08002.20 ppb
2014-09-181610-035-07303.50 ppb
2014-09-181610-041-10256.40 ppb
2014-09-181610-042-09554.30 ppb
2014-09-181610-043-13353.20 ppb
2014-09-181610-044-08055.60 ppb
2014-09-181610-045-10505.30 ppb
2014-09-181610-047-13204.70 ppb
2014-09-181610-048-10103.60 ppb
2014-09-181610-049-10183.50 ppb
2014-09-181610-050-08505.60 ppb
2014-09-181610-051-09251.70 ppb
2014-09-181610-053-09303.40 ppb
2014-09-181610-062-09403.60 ppb
2014-09-181610-068-09103.50 ppb
2014-09-181610-070-07233.50 ppb
2014-09-181610-078-14054.70 ppb
2014-09-181610-079-09301.70 ppb
2014-09-181610-090-08401.40 ppb
2014-09-181610-097-12456.00 ppb
2014-09-181610-115-08165.30 ppb
2014-09-181610-124-11159.60 ppb
2014-09-181610-127-14004.10 ppb
2014-09-181610-129-10106.10 ppb
2014-09-181610-130-09484.20 ppb
2014-09-181610-131-09386.00 ppb
2014-09-181610-132-0908ND
2014-09-181610-133-0820ND
2014-09-181610-134-0745ND
2014-09-181610-135-09102.10 ppb
2014-09-181610-136-0712ND
2014-09-181610-137-0735ND
2014-09-181610-143-07251.60 ppb
2014-09-181610-146-09403.90 ppb
2014-09-181610-147-09451.60 ppb
2014-09-181610-148-07252.40 ppb
2014-09-181610-149-08302.10 ppb
2014-09-181610-150-07502.20 ppb
2014-09-181610-151-07502.80 ppb
2014-09-181610-154-07002.30 ppb
2014-09-181610-165-08352.40 ppb
2014-09-181610-166-08233.20 ppb
2014-09-181610-169-08522.40 ppb
2014-09-181610-170-09353.80 ppb
2014-09-181610-170-11054.60 ppb
2014-09-181610-171-11054.60 ppb
2014-09-181610-172-09251.20 ppb
2014-09-181610-174-07453.50 ppb
2014-09-181610-183-07253.20 ppb
2014-09-181610-185-08406.70 ppb
2014-09-181610-186-08053.30 ppb
2014-09-181610-187-09002.80 ppb
2014-09-181610-189-09154.40 ppb
2014-09-181610-191-08302.30 ppb
2014-09-181610-193-10403.70 ppb
2014-09-181610-196-08134.50 ppb
2014-09-181610-221-09563.10 ppb
2014-09-181610-226-09052.80 ppb
2014-09-181610-228-07352.90 ppb
2014-09-181610-229-10201.80 ppb
2014-09-181610-232-09351.40 ppb
2014-09-181610-234-11004.20 ppb
2014-09-181610-239-09453.70 ppb
2014-09-181610-241-08454.90 ppb
2014-09-181610-243-10205.30 ppb
2015-02-041610-061-11254.00 ppb
2017-03-031644-245-13007.50 ppb
2019-12-171610-245-09006.10 ppb