Is East Valley Water District Tap Water Safe? Quality Report

Water source: Surface water
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
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31
MCL	Health-based	Resolved	2017-01-01 → 2017-03-31

PFAS detected

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

Contaminant	Max	Detection rate	Period
PFBS	0.0089 µg/L	4/28	2025
PFOS	0.0120 µg/L	3/28	2025
Pfhxa	0.0047 µg/L	2/28	2025
PFHXS	0.0040 µg/L	2/28	2025
PFOA	0.0090 µg/L	2/28	2025
Pfpea	0.0047 µg/L	2/28	2025
Pfhpa	0.0031 µg/L	1/28	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	10848 µg/L 108% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 13786 µg/L	3558/3596	SYR4	2012–2019
Fluoride	2600 µg/L 65% of the EPA limit 4000 µg/L worst single sample: 3200 µg/L	1221/1224	SYR4	2012–2019
TTHM	78.66 µg/L 98% of the EPA limit 80 µg/L worst single sample: 132.3 µg/L	409/421	SYR4	2012–2019
Bromodichloromethane	23.6 µg/L No EPA limit set worst single sample: 42.5 µg/L	398/421	SYR4	2012–2019
Chloroform	35.84 µg/L No EPA limit set worst single sample: 83.3 µg/L	373/421	SYR4	2012–2019
Dibromochloromethane	32.07 µg/L No EPA limit set worst single sample: 59.6 µg/L	362/421	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	28.87 µg/L 48% of the EPA limit 60 µg/L worst single sample: 45.1 µg/L	287/341	SYR4	2013–2019
Bromoform	19.305 µg/L No EPA limit set worst single sample: 46.1 µg/L	280/421	SYR4	2012–2019
Dichloroacetic Acid	13.6 µg/L No EPA limit set worst single sample: 33.4 µg/L	261/341	SYR4	2013–2019
Trichloroacetic Acid	18.225 µg/L No EPA limit set worst single sample: 56 µg/L	220/341	SYR4	2013–2019
Dibromoacetic Acid	12.43 µg/L No EPA limit set worst single sample: 16 µg/L	218/341	SYR4	2013–2019
Tetrachloroethylene	2.84 µg/L 57% of the EPA limit 5 µg/L worst single sample: 3.6 µg/L	113/623	SYR4	2012–2019
Combined Uranium	42.2415 µg/L 141% of the EPA limit, at the 95th percentile of samples — 30 µg/L worst single sample: 47.68 µg/L	74/110	SYR4	2012–2019
Monobromoacetic Acid	1.3 µg/L No EPA limit set worst single sample: 1.4 µg/L	55/341	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	40/40	LCR	2024
Nitrate-Nitrite	530000 µg/L 5300% of the EPA limit, at the 95th percentile of samples — 10000 µg/L worst single sample: 630000 µg/L	39/54	SYR4	2012–2019
Lithium	56.2 µg/L No EPA limit set	21/28	UCMR-5	2025
Arsenic	6.065 µg/L 61% of the EPA limit 10 µg/L worst single sample: 6.1 µg/L	8/72	SYR4	2012–2019
1,2-DIBROMO-3-CHLOROPROPANE	0.0120 µg/L 6% of the EPA limit 0.2000 µg/L	1/48	SYR4	2014–2019

85 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-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, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MOORE, MICHAEL
Phone: 909-633-0399
Email: [email protected]

Frequently asked questions about East Valley Water District

Is East Valley Water District tap water safe to drink?

EPA monitoring detected 26 contaminants in East Valley 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 East Valley Water District's water?

EPA monitoring detected Nitrate, Fluoride, TTHM, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does East Valley Water District serve?

East Valley Water District reports serving 108,629 people in California, per its EPA record.

Has East Valley Water District had any water quality violations?

The EPA has 6 violations on file for East Valley Water District, of which 6 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.