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Tap water quality report

Arroyo Seco Estates Mws

EPA monitoring tested this supplier for 56 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

56
contaminants tested
3
detected
70
people served
7
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Private
Counties served
Monterey

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.

7
health-based violations
29
violations on file
2
still open
ViolationTypeStatusPeriod
TT Health-based Unaddressed 2024-10-17
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-11-01 → 2009-11-30
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Resolved 2009-07-01 → 2009-07-31
MCL Health-based Resolved 2009-07-01 → 2009-07-31
RPT Monitoring Unaddressed 2024-10-17
MR Monitoring Resolved 2017-10-01
MR Monitoring Resolved 2010-10-01 → 2010-10-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
626.16 µg/L 6.3%
of the EPA limit 10000 µg/L
worst single sample: 632.8 µg/L
22/22 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2026
Fluoride
276.5 µg/L 6.9%
of the EPA limit 4000 µg/L
worst single sample: 280 µg/L
2/2 SYR4 2012–2015
53 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylbenzeneHexachlorobenzeneHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RIANDA, RENEE
Phone
530-304-7065
Email
RRIANDA@AOL.COM

Frequently asked questions about Arroyo Seco Estates Mws

Is Arroyo Seco Estates Mws tap water safe to drink?

EPA monitoring detected 3 contaminants in Arroyo Seco Estates Mws'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 Arroyo Seco Estates Mws's water?

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

How many people does Arroyo Seco Estates Mws serve?

Arroyo Seco Estates Mws reports serving 70 people in California, per its EPA record.

Has Arroyo Seco Estates Mws had any water quality violations?

The EPA has 29 violations on file for Arroyo Seco Estates Mws, of which 7 are health-based (a contaminant limit or required treatment was breached) and 2 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.