Is Ventura Wwd No. 8 - Simi Valley Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: Ventura

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
MCL	Health-based	Archived	1979-10-28 → 1980-04-27
MR	Monitoring	Archived	2022-01-01 → 2022-12-31
MR	Monitoring	Resolved	2012-01-01 → 2012-03-31
MR	Monitoring	Resolved	2012-01-01 → 2012-03-31
MR	Monitoring	Resolved	2012-01-01 → 2012-03-31
MR	Monitoring	Resolved	2012-01-01 → 2012-03-31
MR	Monitoring	Resolved	2008-11-01 → 2008-11-30
MR	Monitoring	Resolved	2008-11-01 → 2008-11-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
TTHM	41 µg/L 51% of the EPA limit 80 µg/L worst single sample: 63 µg/L	253/253	SYR4	2012–2019
Bromodichloromethane	7.405 µg/L No EPA limit set worst single sample: 23 µg/L	252/253	SYR4	2012–2019
Dibromochloromethane	16.45 µg/L No EPA limit set worst single sample: 28 µg/L	252/253	SYR4	2012–2019
Bromoform	15 µg/L No EPA limit set worst single sample: 20 µg/L	249/253	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	9.775 µg/L 16% of the EPA limit 60 µg/L worst single sample: 18 µg/L	246/248	SYR4	2012–2019
Dibromoacetic Acid	5.995 µg/L No EPA limit set worst single sample: 7.2 µg/L	242/248	SYR4	2012–2019
Dichloroacetic Acid	4.5 µg/L No EPA limit set worst single sample: 7.9 µg/L	159/248	SYR4	2012–2019
Chloroform	7.74 µg/L No EPA limit set worst single sample: 16 µg/L	137/253	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	34/34	LCR	2025
Trichloroacetic Acid	5.935 µg/L No EPA limit set worst single sample: 7 µg/L	32/248	SYR4	2012–2019
Nitrate	2712 µg/L 27% of the EPA limit 10000 µg/L	28/52	SYR4	2012–2019
Combined Uranium	16.4719 µg/L 55% of the EPA limit 30 µg/L worst single sample: 17.88 µg/L	10/10	SYR4	2012–2019
Fluoride	345 µg/L 8.6% of the EPA limit 4000 µg/L worst single sample: 380 µg/L	8/11	SYR4	2012–2019
Selenium	33.3 µg/L 67% of the EPA limit 50 µg/L worst single sample: 39 µg/L	7/11	SYR4	2012–2019
Nitrate-Nitrite	712500 µg/L 7125% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 720000 µg/L	6/7	SYR4	2014–2019
Arsenic	3.95 µg/L 40% of the EPA limit 10 µg/L worst single sample: 4.1 µg/L	4/11	SYR4	2012–2019
Monobromoacetic Acid	2.94 µg/L No EPA limit set worst single sample: 3 µg/L	4/248	SYR4	2012–2019
Gross Beta Particle Activity	3.31 pCi/L No EPA limit set worst single sample: 3.4 pCi/L	3/5	SYR4	2014–2019
Copper	97.55 µg/L 7.5% of the EPA limit 1300 µg/L worst single sample: 100 µg/L	2/11	SYR4	2012–2019
Monochloroacetic Acid	8.99 µg/L No EPA limit set worst single sample: 9.3 µg/L	2/248	SYR4	2012–2019
Barium	120 µg/L 6% of the EPA limit 2000 µg/L	1/11	SYR4	2012–2019

92 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FUCHIWAKI, RON
Phone: 805-583-6808
Email: [email protected]

Frequently asked questions about Ventura Wwd No. 8 - Simi Valley

Is Ventura Wwd No. 8 - Simi Valley tap water safe to drink?

EPA monitoring detected 21 contaminants in Ventura Wwd No. 8 - Simi Valley'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 Ventura Wwd No. 8 - Simi Valley's water?

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

How many people does Ventura Wwd No. 8 - Simi Valley serve?

Ventura Wwd No. 8 - Simi Valley reports serving 94,738 people in California, per its EPA record.

Has Ventura Wwd No. 8 - Simi Valley had any water quality violations?

The EPA has 8 violations on file for Ventura Wwd No. 8 - Simi Valley, of which 1 is 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.