Is Modesto Irrigation District Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Stanislaus

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Chloroform	70 µg/L No EPA limit set	73/73	SYR4	2012–2019
TTHM	74 µg/L 93% of the EPA limit 80 µg/L	73/73	SYR4	2012–2019
Bromodichloromethane	4.4 µg/L No EPA limit set	72/73	SYR4	2012–2019
Dichloroacetic Acid	31 µg/L No EPA limit set	65/65	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	56 µg/L 93% of the EPA limit 60 µg/L	65/65	SYR4	2012–2019
Trichloroacetic Acid	22 µg/L No EPA limit set	64/65	SYR4	2012–2019
Monochloroacetic Acid	4.3 µg/L No EPA limit set	28/65	SYR4	2012–2019
Bromate	1.7 µg/L 17% of the EPA limit 10 µg/L	1/96	SYR4	2012–2019
Dibromoacetic Acid	1.4 µg/L No EPA limit set	1/65	SYR4	2012–2019
Ethylbenzene	0.5200 µg/L 0.1% of the EPA limit 700 µg/L	1/27	SYR4	2012–2019
Gross Beta Particle Activity	1.46 pCi/L No EPA limit set	1/2	SYR4	2012–2019

70 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FOSTER, JOSH
Phone: 209-526-7656
Email: josh.foster@mid.org

Frequently asked questions about Modesto Irrigation District

Is Modesto Irrigation District tap water safe to drink?

EPA monitoring detected 11 contaminants in Modesto 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 Modesto Irrigation District's water?

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

How many people does Modesto Irrigation District serve?

Modesto Irrigation District reports serving 23 people in California, per its EPA record.

Has Modesto Irrigation District had any water quality violations?

The EPA has no formal drinking-water violations on file for Modesto Irrigation District.

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.