Is Monte Vista Wd Tap Water Safe? Quality Report

Water source: SWP
Ownership: Local government
Counties served: San Bernardino

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
MR	Monitoring	Resolved	2013-06-07
MR	Monitoring	Resolved	2013-06-07

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
PFHXS	0.0074 µg/L	7/20	2025
PFOS	0.0056 µg/L	4/21	2025
Pfba	0.0110 µg/L	2/21	2025
Pfhxa	0.0033 µg/L	1/20	2025
Pfpea	0.0035 µg/L	1/20	2025

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	16000 µg/L 160% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 20114 µg/L	5092/5758	SYR4	2012–2019
1,2-DIBROMO-3-CHLOROPROPANE	0.2185 µg/L 109% of the EPA limit, at the 95th percentile of samples — 0.2000 µg/L worst single sample: 0.5300 µg/L	504/1104	SYR4	2012–2019
TTHM	73.71 µg/L 92% of the EPA limit 80 µg/L worst single sample: 82 µg/L	203/262	SYR4	2012–2019
Dibromochloromethane	27.175 µg/L No EPA limit set worst single sample: 33 µg/L	196/280	SYR4	2012–2019
Bromoform	24.965 µg/L No EPA limit set worst single sample: 32 µg/L	182/291	SYR4	2012–2019
Bromodichloromethane	20.3 µg/L No EPA limit set worst single sample: 24 µg/L	180/271	SYR4	2012–2019
Chloroform	16.48 µg/L No EPA limit set worst single sample: 24.7 µg/L	169/266	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	14.45 µg/L 24% of the EPA limit 60 µg/L worst single sample: 18.1 µg/L	132/283	SYR4	2012–2019
Dibromoacetic Acid	9.61 µg/L No EPA limit set worst single sample: 10.4 µg/L	130/285	SYR4	2012–2019
Dichloroacetic Acid	4.93 µg/L No EPA limit set worst single sample: 6.2 µg/L	99/283	SYR4	2012–2019
Trichloroacetic Acid	3.9 µg/L No EPA limit set worst single sample: 5 µg/L	78/284	SYR4	2012–2019
Fluoride	290 µg/L 7.2% of the EPA limit 4000 µg/L worst single sample: 300 µg/L	32/36	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	27/27	LCR	2025
Nitrate-Nitrite	17000 µg/L 170% of the EPA limit, at the 95th percentile of samples — 10000 µg/L	20/20	SYR4	2016–2019
Arsenic	5.825 µg/L 58% of the EPA limit 10 µg/L worst single sample: 5.9 µg/L	16/33	SYR4	2012–2019
Monobromoacetic Acid	1.225 µg/L No EPA limit set worst single sample: 1.3 µg/L	16/292	SYR4	2012–2019
1,1-Dichloroethylene	0.5200 µg/L 7.4% of the EPA limit 7 µg/L	3/35	SYR4	2012–2019
Copper	98 µg/L 7.5% of the EPA limit 1300 µg/L	1/36	SYR4	2012–2019
Chromium	12 µg/L 12% of the EPA limit 100 µg/L	1/33	SYR4	2012–2019
Lead	8.4 µg/L 56% of the EPA limit 15 µg/L	1/33	SYR4	2012–2019
Tetrachloroethylene	0.6400 µg/L 13% of the EPA limit 5 µg/L	1/35	SYR4	2012–2019
Trichloroethylene	0.5800 µg/L 12% of the EPA limit 5 µg/L	1/35	SYR4	2012–2019

83 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SCOTT-COE, JUSTIN
Phone: 909-267-2125
Email: [email protected]

Frequently asked questions about Monte Vista Wd

Is Monte Vista Wd tap water safe to drink?

EPA monitoring detected 27 contaminants in Monte Vista Wd'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 Monte Vista Wd's water?

EPA monitoring detected Nitrate, 1,2-DIBROMO-3-CHLOROPROPANE, TTHM, Dibromochloromethane, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Monte Vista Wd serve?

Monte Vista Wd reports serving 56,017 people in California, per its EPA record.

Has Monte Vista Wd had any water quality violations?

The EPA has 2 violations on file for Monte Vista Wd, 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.