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Tap water quality report

Douglas County Carson Valley

EPA monitoring tested this supplier for 44 contaminants and detected 8. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
8
detected
6,488
people served
18
health-based violations
Nevada rankingsLead in NevadaPFAS in Nevada
Water source
Ground water
Ownership
Local government
Counties served
Douglas

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.

18
health-based violations
45
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2010-12-01 → 2010-12-31
MCL Health-based Resolved 2010-12-01 → 2010-12-31
MCL Health-based Resolved 2010-12-01 → 2010-12-31
MCL Health-based Resolved 2010-12-01 → 2010-12-31
MCL Health-based Resolved 2009-01-01 → 2009-03-31
MCL Health-based Resolved 2009-01-01 → 2009-03-31
MCL Health-based Archived 2006-01-01 → 2006-01-31
MCL Health-based Archived 2006-01-01 → 2006-01-31
MCL Health-based Archived 2002-12-01 → 2002-12-31
MCL Health-based Archived 2002-12-01 → 2002-12-31

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
Lead
0.0019 mg/L 13%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Dibromochloromethane
1.1 µg/L
No EPA limit set
 9/17 SYR4 2012–2019
TTHM
2.82 µg/L 3.5%
of the EPA limit 80 µg/L
worst single sample: 2.9 µg/L
9/17 SYR4 2012–2019
Bromoform
0.9625 µg/L
No EPA limit set
worst single sample: 0.9900 µg/L
6/17 SYR4 2012–2019
Bromodichloromethane
0.6540 µg/L
No EPA limit set
worst single sample: 0.6600 µg/L
5/17 SYR4 2012–2019
Lithium
21.8 µg/L
No EPA limit set
 2/2 UCMR-5 2023
Copper
2 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/1 SYR4 2012
Chloroform
0.2200 µg/L
No EPA limit set
 1/17 SYR4 2012–2019
36 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaDibromoacetic AcidDichloroacetic AcidHfpo-DaLeadMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaTotal Haloacetic Acids (HAA5)Trichloroacetic Acid

Utility contact

Contact
COUNTY, DOUGLAS
Phone
775-783-6489
Email
[email protected]

Frequently asked questions about Douglas County Carson Valley

Is Douglas County Carson Valley tap water safe to drink?

EPA monitoring detected 8 contaminants in Douglas County Carson Valley'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 Douglas County Carson Valley's water?

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

How many people does Douglas County Carson Valley serve?

Douglas County Carson Valley reports serving 6,488 people in Nevada, per its EPA record.

Has Douglas County Carson Valley had any water quality violations?

The EPA has 45 violations on file for Douglas County Carson Valley, of which 18 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.