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Tap water quality report

Cachagua Mutual Ws (#4)

EPA monitoring tested this supplier for 59 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

59
contaminants tested
13
detected
55
people served
4
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.

4
health-based violations
54
violations on file
2
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2001-02-01 → 2001-02-28
MCL Health-based Resolved 2001-02-01 → 2001-02-28
MCL Health-based Resolved 1999-07-01 → 1999-07-31
MCL Health-based Resolved 1999-07-01 → 1999-07-31
MR Monitoring Unaddressed 2024-10-01
MR Monitoring Unaddressed 2023-10-01
MR Monitoring Resolved 2021-10-01
MR Monitoring Resolved 2014-01-01 → 2014-01-31
MR Monitoring Resolved 2014-01-01 → 2014-01-31
MR Monitoring Resolved 2014-01-01 → 2014-01-31

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
1000 µg/L 10%
of the EPA limit 10000 µg/L
 20/30 SYR4 2012–2019
Fluoride
1800 µg/L 45%
of the EPA limit 4000 µg/L
worst single sample: 2900 µg/L
12/12 SYR4 2014–2018
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Arsenic
7.9 µg/L 79%
of the EPA limit 10 µg/L
worst single sample: 8 µg/L
3/5 SYR4 2014–2018
Copper
26.7 µg/L 2.1%
of the EPA limit 1300 µg/L
worst single sample: 29 µg/L
3/3 SYR4 2014–2017
Cadmium
1.9 µg/L 38%
of the EPA limit 5 µg/L
worst single sample: 2 µg/L
3/5 SYR4 2014–2018
Nitrate-Nitrite
740000 µg/L 7400%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 800000 µg/L
3/3 SYR4 2014–2017
Barium
109.9 µg/L 5.5%
of the EPA limit 2000 µg/L
worst single sample: 114 µg/L
2/3 SYR4 2014–2017
Chromium
32.55 µg/L 33%
of the EPA limit 100 µg/L
worst single sample: 34 µg/L
2/3 SYR4 2014–2017
Lead
36.2 µg/L 241%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 38 µg/L
2/3 SYR4 2014–2017
Selenium
4.8 µg/L 9.6%
of the EPA limit 50 µg/L
worst single sample: 5 µg/L
2/3 SYR4 2014–2017
Beryllium, Total
0.7000 µg/L 18%
of the EPA limit 4 µg/L
 1/3 SYR4 2014–2017
Nitrite
800 µg/L 80%
of the EPA limit 1000 µg/L
 1/4 SYR4 2014–2017
46 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, TotalAtrazineBenzeneBenzo(A)PyreneBromodichloromethaneBromoformChlorobenzeneCyanideCarbofuranCarbon TetrachlorideChloroformCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylbenzeneLassoMercuryOxamylPentachlorophenolPicloramSimazineStyreneTTHMTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
NEWTON, SUSAN
Phone
831-659-2489
Email
smnewt2000@gmail.com

Frequently asked questions about Cachagua Mutual Ws (#4)

Is Cachagua Mutual Ws (#4) tap water safe to drink?

EPA monitoring detected 13 contaminants in Cachagua Mutual Ws (#4)'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 Cachagua Mutual Ws (#4)'s water?

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

How many people does Cachagua Mutual Ws (#4) serve?

Cachagua Mutual Ws (#4) reports serving 55 people in California, per its EPA record.

Has Cachagua Mutual Ws (#4) had any water quality violations?

The EPA has 54 violations on file for Cachagua Mutual Ws (#4), of which 4 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.