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South San Joaquin Irrigation District

EPA monitoring tested this supplier for 78 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
17
detected
25
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
Stanislaus

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.

0
health-based violations
2
violations on file
0
still open
ViolationTypeStatusPeriod
Other Monitoring Resolved 2010-04-01 → 2010-06-30
Other Monitoring Resolved 2010-04-01 → 2010-06-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chloroform
63.95 µg/L
No EPA limit set
worst single sample: 70 µg/L
122/122 SYR4 2012–2019
TTHM
66 µg/L 83%
of the EPA limit 80 µg/L
worst single sample: 73 µg/L
122/122 SYR4 2012–2019
Bromodichloromethane
3.2 µg/L
No EPA limit set
worst single sample: 3.8 µg/L
121/122 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
46.35 µg/L 77%
of the EPA limit 60 µg/L
worst single sample: 56 µg/L
114/116 SYR4 2012–2019
Trichloroacetic Acid
19 µg/L
No EPA limit set
worst single sample: 23 µg/L
114/116 SYR4 2012–2019
Dichloroacetic Acid
27.7 µg/L
No EPA limit set
worst single sample: 34 µg/L
107/116 SYR4 2012–2019
Monochloroacetic Acid
2.83 µg/L
No EPA limit set
worst single sample: 2.9 µg/L
15/116 SYR4 2012–2019
Dibromochloromethane
0.8000 µg/L
No EPA limit set
 7/122 SYR4 2012–2019
Barium
14.175 µg/L 0.7%
of the EPA limit 2000 µg/L
worst single sample: 14.2 µg/L
6/16 SYR4 2012–2019
Nitrate
1000 µg/L 10%
of the EPA limit 10000 µg/L
 6/32 SYR4 2012–2019
Bromoform
0.7900 µg/L
No EPA limit set
worst single sample: 0.8000 µg/L
3/122 SYR4 2012–2019
Monobromoacetic Acid
1.9 µg/L
No EPA limit set
worst single sample: 2 µg/L
3/116 SYR4 2012–2019
Nitrate-Nitrite
100000 µg/L 1000%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
 3/14 SYR4 2012–2019
Fluoride
195 µg/L 4.9%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
2/16 SYR4 2012–2019
1,2-Dichloropropane
2.2 µg/L 44%
of the EPA limit 5 µg/L
 1/16 SYR4 2012–2019
Dibromoacetic Acid
1.6 µg/L
No EPA limit set
 1/116 SYR4 2012–2019
Lead
0.6000 µg/L 4%
of the EPA limit 15 µg/L
 1/16 SYR4 2012–2019
61 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ASHWORTH, JUSTIN
Phone
209-844-1508
Email
justin.ashworth@ssjid.gov

Frequently asked questions about South San Joaquin Irrigation District

Is South San Joaquin Irrigation District tap water safe to drink?

EPA monitoring detected 17 contaminants in South San Joaquin Irrigation 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 South San Joaquin Irrigation District's water?

EPA monitoring detected Chloroform, TTHM, Bromodichloromethane, 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 South San Joaquin Irrigation District serve?

South San Joaquin Irrigation District reports serving 25 people in California, per its EPA record.

Has South San Joaquin Irrigation District had any water quality violations?

The EPA has 2 violations on file for South San Joaquin Irrigation District, of which 0 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.