Is Stockton East Water District Tap Water Safe? Quality Report

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	1800 µg/L 18% of the EPA limit 10000 µg/L worst single sample: 2056.6 µg/L	46/96	SYR4	2012–2019
Chloroform	45.29 µg/L No EPA limit set worst single sample: 59 µg/L	34/43	SYR4	2012–2019
TTHM	52.85 µg/L 66% of the EPA limit 80 µg/L worst single sample: 65.2 µg/L	34/43	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	38.6 µg/L 64% of the EPA limit 60 µg/L worst single sample: 54 µg/L	32/32	SYR4	2012–2019
Trichloroacetic Acid	21 µg/L No EPA limit set worst single sample: 43 µg/L	32/32	SYR4	2012–2019
Bromodichloromethane	9.6 µg/L No EPA limit set worst single sample: 9.9 µg/L	31/45	SYR4	2012–2019
Barium	132 µg/L 6.6% of the EPA limit 2000 µg/L worst single sample: 153 µg/L	25/34	SYR4	2012–2019
Dichloroacetic Acid	13.4 µg/L No EPA limit set worst single sample: 31 µg/L	25/32	SYR4	2012–2019
Arsenic	12.95 µg/L 130% of the EPA limit, at the 95th percentile of samples — 10 µg/L worst single sample: 13 µg/L	22/97	SYR4	2012–2019
Nitrate-Nitrite	960000 µg/L 9600% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 1000000 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	2.87 µg/L No EPA limit set worst single sample: 2.9 µg/L	7/46	SYR4	2012–2019
Gross Beta Particle Activity	2.55 pCi/L No EPA limit set worst single sample: 2.77 pCi/L	6/6	SYR4	2014–2015
Combined Uranium	1.61263 µg/L 5.4% of the EPA limit 30 µg/L worst single sample: 1.7731 µg/L	4/6	SYR4	2014–2015
Lead	1.655 µg/L 11% of the EPA limit 15 µg/L worst single sample: 1.7 µg/L	4/34	SYR4	2012–2019
Monobromoacetic Acid	1.85 µg/L No EPA limit set worst single sample: 2 µg/L	4/32	SYR4	2012–2019
Dibromoacetic Acid	2 µg/L No EPA limit set	3/32	SYR4	2012–2019
Fluoride	190 µg/L 4.8% of the EPA limit 4000 µg/L worst single sample: 200 µg/L	3/33	SYR4	2012–2019
Toluene	2.115 µg/L 0.2% of the EPA limit 1000 µg/L worst single sample: 2.2 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: [email protected]

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.