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Tap water quality report

Donner Summit Public Utility District

EPA monitoring tested this supplier for 53 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

53
contaminants tested
12
detected
310
people served
20
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Surface water
Ownership
Local government
Counties served
Nevada

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.

20
health-based violations
26
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2022-10-01 → 2022-10-31
TT Health-based Resolved 2022-10-01 → 2022-10-31
TT Health-based Resolved 2011-11-01 → 2011-11-30
TT Health-based Resolved 2011-11-01 → 2011-11-30
TT Health-based Resolved 2009-09-01 → 2009-09-30
TT Health-based Resolved 2009-09-01 → 2009-09-30
TT Health-based Resolved 2009-08-01 → 2009-08-31
TT Health-based Resolved 2009-08-01 → 2009-08-31
TT Health-based Resolved 2008-12-01 → 2008-12-31
TT Health-based Resolved 2008-12-01 → 2008-12-31

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
0.0046 mg/L 31%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2023
Barium
11.2406 µg/L 0.6%
of the EPA limit 2000 µg/L
worst single sample: 11.45 µg/L
2/2 SYR4 2018
Bromodichloromethane
2.08 µg/L
No EPA limit set
worst single sample: 2.1 µg/L
2/2 SYR4 2012–2018
Chloroform
21.465 µg/L
No EPA limit set
worst single sample: 21.7 µg/L
2/2 SYR4 2012–2018
Dichloroacetic Acid
17.98 µg/L
No EPA limit set
worst single sample: 18.5 µg/L
2/2 SYR4 2012–2018
TTHM
23.18 µg/L 29%
of the EPA limit 80 µg/L
worst single sample: 23.4 µg/L
2/2 SYR4 2012–2018
Total Haloacetic Acids (HAA5)
35.2 µg/L 59%
of the EPA limit 60 µg/L
worst single sample: 36 µg/L
2/2 SYR4 2012–2018
Trichloroacetic Acid
15.755 µg/L
No EPA limit set
worst single sample: 16.4 µg/L
2/2 SYR4 2012–2018
Arsenic
1.1 µg/L 11%
of the EPA limit 10 µg/L
 1/2 SYR4 2018
Copper
1.14 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/2 SYR4 2018
Dibromoacetic Acid
1.1 µg/L
No EPA limit set
 1/2 SYR4 2012–2018
Monochloroacetic Acid
8.9 µg/L
No EPA limit set
 1/2 SYR4 2012–2018
41 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAsbestosBenzeneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChromiumCombined UraniumDichloromethaneDibromochloromethaneEthylbenzeneFluorideGross Beta Particle ActivityMercuryMonobromoacetic AcidNitrateNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
PALMER, STEVEN
Phone
530-426-3456
Email
[email protected]

Frequently asked questions about Donner Summit Public Utility District

Is Donner Summit Public Utility District tap water safe to drink?

EPA monitoring detected 12 contaminants in Donner Summit Public Utility District'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 Donner Summit Public Utility District's water?

EPA monitoring detected Lead, Barium, Bromodichloromethane, Chloroform, Dichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Donner Summit Public Utility District serve?

Donner Summit Public Utility District reports serving 310 people in California, per its EPA record.

Has Donner Summit Public Utility District had any water quality violations?

The EPA has 26 violations on file for Donner Summit Public Utility District, of which 20 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.