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Tap water quality report

Loma Mar, CA

EPA monitoring detected 23 contaminants across the 2 water suppliers serving Loma Mar. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

2
water suppliers
179
people served
23
contaminants found
California rankings Lead in California PFAS in California

What was found in Loma Mar's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate-Nitrite
500000 µg/L 5000%
of the EPA limit, in the worst sample — 10000 µg/L
 1/2 SYR4
Barium
6200 µg/L 310%
of the EPA limit, in the worst sample — 2000 µg/L
 2/2 SYR4
Fluoride
1100 µg/L 28%
of the EPA limit 4000 µg/L
 2/2 SYR4
Nitrite
400 µg/L 40%
of the EPA limit 1000 µg/L
 1/2 SYR4
TTHM
291 µg/L 364%
of the EPA limit, in the worst sample — 80 µg/L
 2/2 SYR4
Nitrate
178.54 µg/L 1.8%
of the EPA limit 10000 µg/L
 2/2 SYR4
Total Haloacetic Acids (HAA5)
129.4 µg/L 216%
of the EPA limit, in the worst sample — 60 µg/L
 2/2 SYR4
Dibromochloromethane
96 µg/L
No EPA limit set
 2/2 SYR4
Chloroform
93 µg/L
No EPA limit set
 2/2 SYR4
Bromoform
91.4 µg/L
No EPA limit set
 2/2 SYR4
Bromodichloromethane
89 µg/L
No EPA limit set
 2/2 SYR4
Dichloroacetic Acid
72.9 µg/L
No EPA limit set
 2/2 SYR4
Trichloroacetic Acid
53.3 µg/L
No EPA limit set
 2/2 SYR4
Dibromoacetic Acid
24.4 µg/L
No EPA limit set
 2/2 SYR4
Arsenic
20 µg/L 200%
of the EPA limit, in the worst sample — 10 µg/L
 2/2 SYR4
Chromium
8 µg/L 8%
of the EPA limit 100 µg/L
 1/2 SYR4
Monochloroacetic Acid
7.5 µg/L
No EPA limit set
 2/2 SYR4
Lead
7 µg/L 47%
of the EPA limit 15 µg/L
 1/2 SYR4
Copper
4 µg/L 0.3%
of the EPA limit 1300 µg/L
 2/2 SYR4
Di(2-ethylhexyl) Phthalate
2.2 µg/L 37%
of the EPA limit 6 µg/L
 1/2 SYR4
Monobromoacetic Acid
1.4 µg/L
No EPA limit set
 1/2 SYR4
Di(2-ethylhexyl) Adipate
0.2400 µg/L 0.1%
of the EPA limit 400 µg/L
 1/2 SYR4
Lead
0.0028 mg/L 19%
of the EPA limit 0.0150 mg/L
 2/2 LCR
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. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Loma Mar

SupplierPopulation served
REDWOOD GLEN CAMP & CONFERENCE CTR 114
LOMA MAR MUTUAL 65

Frequently asked questions about Loma Mar tap water

Is Loma Mar tap water safe to drink?

EPA testing detected 23 contaminants in the water serving Loma Mar. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Loma Mar?

2 public water suppliers report drinking-water monitoring for Loma Mar, California to the EPA. Each is listed above with its population served.

What contaminants are in Loma Mar's water?

The contaminants EPA monitoring detected in Loma Mar include Nitrate-Nitrite, Barium, Fluoride, Nitrite, TTHM. The full list, with the highest level found and the data source, is in the table above.

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.