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Tap water quality report

Cwsc Las Lomas

EPA monitoring tested this supplier for 109 contaminants and detected 20. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
20
detected
2,084
people served
0
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.

0
health-based violations
5
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2002-01-01 → 2004-12-31
MR Monitoring Resolved 2002-01-01 → 2004-12-31
MR Monitoring Resolved 2002-01-01 → 2004-12-31
MR Monitoring Resolved 2002-01-01 → 2004-12-31
MR Monitoring Resolved 1993-07-01 → 2000-04-04

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Chromium
48.805 µg/L 49%
of the EPA limit 100 µg/L
 105/210 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2026
Nitrate
4294 µg/L 43%
of the EPA limit 10000 µg/L
 18/40 SYR4 2012–2019
Bromoform
8.25 µg/L
No EPA limit set
 11/12 SYR4 2012–2019
Dibromochloromethane
6.01 µg/L
No EPA limit set
 11/12 SYR4 2012–2019
TTHM
16.7 µg/L 21%
of the EPA limit 80 µg/L
 11/12 SYR4 2012–2019
Bromodichloromethane
1.94 µg/L
No EPA limit set
 8/12 SYR4 2012–2019
Dibromoacetic Acid
3.9 µg/L
No EPA limit set
 8/11 SYR4 2014–2019
Fluoride
240 µg/L 6%
of the EPA limit 4000 µg/L
 7/7 SYR4 2012–2019
Arsenic
0.5900 µg/L 5.9%
of the EPA limit 10 µg/L
 3/63 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.9 µg/L 6.5%
of the EPA limit 60 µg/L
 3/11 SYR4 2014–2019
Chloroform
0.5900 µg/L
No EPA limit set
 2/12 SYR4 2012–2019
Antimony, Total
0.0070 µg/L 0.1%
of the EPA limit 6 µg/L
 1/52 SYR4 2012–2019
Barium
51.074 µg/L 2.6%
of the EPA limit 2000 µg/L
 1/37 SYR4 2012–2019
Beryllium, Total
0.0030 µg/L 0.1%
of the EPA limit 4 µg/L
 1/47 SYR4 2012–2019
Copper
1.108 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/78 SYR4 2012–2019
Combined Uranium
1.86697 µg/L 6.2%
of the EPA limit 30 µg/L
 1/42 SYR4 2012–2019
Lead
0.0700 µg/L 0.5%
of the EPA limit 15 µg/L
 1/50 SYR4 2012–2019
Selenium
0.8130 µg/L 1.6%
of the EPA limit 50 µg/L
 1/51 SYR4 2012–2019
Thallium, Total
0.0060 µg/L 0.3%
of the EPA limit 2 µg/L
 1/46 SYR4 2012–2019
89 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-PF3ONSAdonaAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JAMES, SOPHIE
Phone
408-367-8593
Email
sjames@calwater.com

Frequently asked questions about Cwsc Las Lomas

Is Cwsc Las Lomas tap water safe to drink?

EPA monitoring detected 20 contaminants in Cwsc Las Lomas'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 Cwsc Las Lomas's water?

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

How many people does Cwsc Las Lomas serve?

Cwsc Las Lomas reports serving 2,084 people in California, per its EPA record.

Has Cwsc Las Lomas had any water quality violations?

The EPA has 5 violations on file for Cwsc Las Lomas, 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.