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Tap water quality report

Stockton East Water District

EPA monitoring tested this supplier for 80 contaminants and detected 22. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

80
contaminants tested
22
detected
50
people served
2
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
San Joaquin

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

2
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2013-07-01 → 2013-09-30
TT Health-based Resolved 2013-07-01 → 2013-09-30
MR Monitoring Resolved 1993-07-01 → 2000-04-04

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2056.6 µg/L 21%
of the EPA limit 10000 µg/L
 46/96 SYR4 2012–2019
Chloroform
59 µg/L
No EPA limit set
 34/43 SYR4 2012–2019
TTHM
65.2 µg/L 82%
of the EPA limit 80 µg/L
 34/43 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
54 µg/L 90%
of the EPA limit 60 µg/L
 32/32 SYR4 2012–2019
Trichloroacetic Acid
43 µg/L
No EPA limit set
 32/32 SYR4 2012–2019
Bromodichloromethane
9.9 µg/L
No EPA limit set
 31/45 SYR4 2012–2019
Barium
153 µg/L 7.7%
of the EPA limit 2000 µg/L
 25/34 SYR4 2012–2019
Dichloroacetic Acid
31 µg/L
No EPA limit set
 25/32 SYR4 2012–2019
Arsenic
13 µg/L 130%
of the EPA limit, in the worst sample — 10 µg/L
 22/97 SYR4 2012–2019
Nitrate-Nitrite
1000000 µg/L 10000%
of the EPA limit, in the worst sample — 10000 µg/L
 9/31 SYR4 2012–2019
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
 7/34 SYR4 2012–2019
Dibromochloromethane
2.9 µg/L
No EPA limit set
 7/46 SYR4 2012–2019
Gross Beta Particle Activity
2.77 pCi/L
No EPA limit set
 6/6 SYR4 2014–2015
Combined Uranium
1.7731 µg/L 5.9%
of the EPA limit 30 µg/L
 4/6 SYR4 2014–2015
Lead
1.7 µg/L 11%
of the EPA limit 15 µg/L
 4/34 SYR4 2012–2019
Monobromoacetic Acid
2 µg/L
No EPA limit set
 4/32 SYR4 2012–2019
Dibromoacetic Acid
2 µg/L
No EPA limit set
 3/32 SYR4 2012–2019
Fluoride
200 µg/L 5%
of the EPA limit 4000 µg/L
 3/33 SYR4 2012–2019
Toluene
2.2 µg/L 0.2%
of the EPA limit 1000 µg/L
 2/28 SYR4 2012–2019
Bromoform
0.6000 µg/L
No EPA limit set
 1/46 SYR4 2012–2019
Copper
30 µg/L 2.3%
of the EPA limit 1300 µg/L
 1/34 SYR4 2012–2019
Mercury
0.0200 µg/L 1%
of the EPA limit 2 µg/L
 1/34 SYR4 2012–2019
58 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
EVENSEN, DARREL
Phone
209-948-0333
Email
DEVENSEN@SEWD.NET

Frequently asked questions about Stockton East Water District

Is Stockton East Water District tap water safe to drink?

EPA monitoring detected 22 contaminants in Stockton East Water District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Stockton East Water District's water?

EPA monitoring detected Nitrate, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Stockton East Water District serve?

Stockton East Water District reports serving 50 people in California, per its EPA record.

Has Stockton East Water District had any water quality violations?

The EPA has 3 violations on file for Stockton East Water District, of which 2 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.