← Grass Valley, CA

Tap water quality report

ZIP 95946 — Grass Valley, CA

EPA monitoring across the 1 water supplier serving ZIP 95946 in Grass Valley, CA detected 4 contaminants. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier below, with the EPA limit for each.

1
water supplier
9,108
people served
4
contaminants found

What was found in ZIP 95946

The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
35.6 µg/L 45%
of the EPA limit 80 µg/L
Main supplier: NEVADA ID - LAKE WILDWOOD · 9,108 people · 2019
1/1 SYR4
Chloroform
33.1 µg/L
No EPA limit set
Main supplier: NEVADA ID - LAKE WILDWOOD · 9,108 people · 2019
1/1 SYR4
Bromodichloromethane
2.54 µg/L
No EPA limit set
Main supplier: NEVADA ID - LAKE WILDWOOD · 9,108 people · 2019
1/1 SYR4
Lead
0.00056 mg/L 3.7%
of the EPA limit 0.0150 mg/L
Main supplier: NEVADA ID - LAKE WILDWOOD · 9,108 people · 2023
1/1 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 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Water suppliers serving ZIP 95946

SupplierStatePopulation served
NEVADA ID - LAKE WILDWOOD CA 9,108

Frequently asked questions about ZIP 95946 tap water

Is the tap water in ZIP 95946 safe to drink?

EPA testing detected 4 contaminants across the water suppliers serving ZIP 95946. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.

Which water suppliers serve ZIP 95946?

1 public water supplier report EPA drinking-water monitoring for ZIP 95946. Each is listed above with its population served.

What contaminants are in ZIP 95946's water?

EPA monitoring detected TTHM, Chloroform, Bromodichloromethane, Lead across this ZIP's suppliers. The full list with levels and sources is above.