Tap WaterIndex

← California

Tap water quality report

South Tahoe Pud - Main

EPA monitoring tested this supplier for 108 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
18
detected
100,000
people served
6
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
Ground water
Ownership
Local government
Counties served
El Dorado

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.

6
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2008-04-01 → 2008-06-30
MCL Health-based Resolved 2008-01-01 → 2008-03-31
MCL Health-based Resolved 2007-10-01 → 2007-12-31
MCL Health-based Resolved 1993-03-01 → 1993-03-31
MCL Health-based Resolved 1993-03-01 → 1993-03-31
MCL Health-based Resolved 1990-01-01 → 1992-06-01
MR Monitoring Resolved 2008-04-01 → 2008-06-30
MR Monitoring Resolved 1990-01-01 → 1993-08-31
MR Monitoring Resolved 1990-01-01 → 1993-08-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfhxa 0.0163 µg/L 5/27 2025
Pfpea 0.0224 µg/L 5/27 2025
Pfhpa 0.0065 µg/L 3/27 2025
PFOA 0.0061 µg/L 3/27 2025
PFBS 0.0037 µg/L 2/27 2025
PFHXS 0.0058 µg/L 2/27 2025
PFOS 0.0052 µg/L 2/27 2025
Pfba 0.0053 µg/L 1/27 2025

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
Nitrate
587 µg/L 5.9%
of the EPA limit 10000 µg/L
worst single sample: 901.966 µg/L
244/244 SYR4 2012–2019
Arsenic
12 µg/L 120%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
worst single sample: 14 µg/L
130/252 SYR4 2012–2019
Nitrate-Nitrite
527050 µg/L 5271%
of the EPA limit, at the 95th percentile of samples — 10000 µg/L
worst single sample: 911000 µg/L
122/122 SYR4 2012–2019
Combined Uranium
20.4056 µg/L 68%
of the EPA limit 30 µg/L
worst single sample: 26.7902 µg/L
107/111 SYR4 2012–2019
Fluoride
274.25 µg/L 6.9%
of the EPA limit 4000 µg/L
worst single sample: 613 µg/L
76/128 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 40/40 LCR 2023
Tetrachloroethylene
0.9000 µg/L 18%
of the EPA limit 5 µg/L
 5/257 SYR4 2012–2019
1,2-Dichloroethane
0.6900 µg/L 14%
of the EPA limit 5 µg/L
worst single sample: 0.7000 µg/L
3/257 SYR4 2012–2019
Lithium
26.3 µg/L
No EPA limit set
 2/25 UCMR-5 2025
Nitrite
68 µg/L 6.8%
of the EPA limit 1000 µg/L
 1/122 SYR4 2012–2019
90 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromateBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfdaPfdoaPfeesaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTTHMThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
COMBES, ADRIAN
Phone
530-543-6258
Email
[email protected]

Frequently asked questions about South Tahoe Pud - Main

Is South Tahoe Pud - Main tap water safe to drink?

EPA monitoring detected 18 contaminants in South Tahoe Pud - Main'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 South Tahoe Pud - Main's water?

EPA monitoring detected Nitrate, Arsenic, Nitrate-Nitrite, Combined Uranium, Fluoride, and others. The full list with the level and data source for each is above.

How many people does South Tahoe Pud - Main serve?

South Tahoe Pud - Main reports serving 100,000 people in California, per its EPA record.

Has South Tahoe Pud - Main had any water quality violations?

The EPA has 9 violations on file for South Tahoe Pud - Main, of which 6 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.