Is Mt. Konocti Mutual Water Company Tap Water Safe? Quality Report

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

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	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-04-01 → 2019-06-30
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2019-01-01 → 2019-03-31
MCL	Health-based	Resolved	2018-10-01 → 2018-12-31
MCL	Health-based	Resolved	2018-10-01 → 2018-12-31
MCL	Health-based	Resolved	2015-04-01 → 2015-06-30
MCL	Health-based	Resolved	2015-04-01 → 2015-06-30
MCL	Health-based	Resolved	2015-01-01 → 2015-03-31
MCL	Health-based	Resolved	2015-01-01 → 2015-03-31

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	95.319 µg/L 119% of the EPA limit, at the 95th percentile of samples — 80 µg/L worst single sample: 113.04 µg/L	58/58	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	64.76 µg/L 108% of the EPA limit, at the 95th percentile of samples — 60 µg/L worst single sample: 74.9 µg/L	58/58	SYR4	2012–2019
Trichloroacetic Acid	22.105 µg/L No EPA limit set worst single sample: 33.6 µg/L	58/58	SYR4	2012–2019
Chloroform	78.634 µg/L No EPA limit set worst single sample: 97.82 µg/L	57/58	SYR4	2012–2019
Bromodichloromethane	12.677 µg/L No EPA limit set worst single sample: 14.37 µg/L	55/58	SYR4	2012–2019
Dichloroacetic Acid	38.495 µg/L No EPA limit set worst single sample: 52.2 µg/L	54/58	SYR4	2012–2019
Dibromochloromethane	4.008 µg/L No EPA limit set worst single sample: 14.77 µg/L	37/58	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	15/15	LCR	2024
Dibromoacetic Acid	4.48 µg/L No EPA limit set worst single sample: 4.6 µg/L	13/58	SYR4	2012–2019
Fluoride	191 µg/L 4.8% of the EPA limit 4000 µg/L worst single sample: 200 µg/L	10/13	SYR4	2012–2019
Monochloroacetic Acid	7.315 µg/L No EPA limit set worst single sample: 7.7 µg/L	8/58	SYR4	2012–2019
Arsenic	3.51 µg/L 35% of the EPA limit 10 µg/L worst single sample: 3.6 µg/L	7/13	SYR4	2012–2019
Bromoform	16.5625 µg/L No EPA limit set worst single sample: 21.2 µg/L	6/58	SYR4	2012–2019
Lithium	26 µg/L No EPA limit set	4/4	UCMR-5	2024
Nitrate	600 µg/L 6% of the EPA limit 10000 µg/L	2/18	SYR4	2012–2019
Monobromoacetic Acid	1 µg/L No EPA limit set	1/58	SYR4	2012–2019

86 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBeryllium, TotalChlorobenzeneCopperCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: FARR, ALAN
Phone: 707-277-7466
Email: [email protected]

Frequently asked questions about Mt. Konocti Mutual Water Company

Is Mt. Konocti Mutual Water Company tap water safe to drink?

EPA monitoring detected 16 contaminants in Mt. Konocti Mutual Water Company'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 Mt. Konocti Mutual Water Company's water?

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

How many people does Mt. Konocti Mutual Water Company serve?

Mt. Konocti Mutual Water Company reports serving 4,360 people in California, per its EPA record.

Has Mt. Konocti Mutual Water Company had any water quality violations?

The EPA has 14 violations on file for Mt. Konocti Mutual Water Company, of which 10 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.