Drinking water quality · 2021
· Verified
What's in North Tahoe Pud - Main — Tahoe Vista, Ca, CA tap water
35 contaminants were measured in the North Tahoe Pud - Main — Tahoe Vista, Ca, CA water system's 2021 annual report. Each is shown below against its federal limit — 1 sit at or above that limit.
- Reporting year
- 2021
- Contaminants measured
- 35
- Over federal limit
- 1
- Approaching the limit
- 0
- Worst contaminant
- HAA5
- Service area
- CA
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| HAA5Haloacetic acids — a group of five disinfection byproducts formed when disinfectants react with organic matter. | 1.9 mg/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | 0.06 mg/LMCL | At or above the limit |
| PerchlorateA chemical used in rocket fuel and fireworks that can also form during disinfection. | Not detected ug/LReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
Physical & aggregate
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TurbidityA measure of cloudiness from suspended particles in the water. | 0.102–0.355 NTUReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | Within the limit |
| AlkalinityA measure of the water's capacity to neutralize acids. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
| Bicarbonate | 126 mg/LReported levelCarnelian Woods System #3110023 Groundwater Park Well | None set | Detected — no federal limit |
+By source (3)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| ColorA measure of visible tint in the water. | 3Reported levelCarnelian Woods System #3110023 Groundwater Park Well | None set | Detected — no federal limit |
+By source (2)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well
| |||
| HardnessA measure of dissolved calcium and magnesium minerals. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
| pHA measure of how acidic or basic the water is. | 8.2Reported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | Detected — no federal limit |
+By source (3)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| Total Dissolved SolidsTotal dissolved solids — the combined content of all dissolved minerals and salts. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well +1 more
| |||
Disinfectants
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| ChlorineA disinfectant added to drinking water to kill bacteria and viruses. | 0.31–0.81 mg/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | Within the limit |
+By source (2)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Dollar Cove System #3110036 Groundwater Tahoe City PUD
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 2.32 pCi/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | 15 pCi/LMCL | Within the limit |
+By source (2)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0 pCi/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | 5 pCi/LMCL | None detected |
+By source (3)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| RadonA naturally occurring radioactive gas that can dissolve into groundwater. | 547 pCi/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| CopperA metal that enters water from corroding household plumbing. | 75 ug/L90th percentileAt the tap | None set | Within the limit |
+By source (3)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| BariumA metal from erosion of natural deposits and industrial discharge. | 44.2 ug/LReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | Within the limit |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| AluminumA common element sometimes used as a treatment coagulant. | Not detected ug/LReported levelCarnelian Woods System #3110023 Groundwater Park Well | None set | None detected |
+By source (3)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well
| |||
| Beryllium | Not detectedReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| Cadmium | Not detectedReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | Not detected ug/L90th percentileAt the tap | None set | None detected |
| ManganeseA naturally occurring metal from soil and rock. | Not detected mg/LReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| MercuryA toxic metal from erosion of natural deposits and industrial runoff. | Not detectedReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well
| |||
| SeleniumA trace element from natural deposits and industrial discharge. | Not detectedReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| Thallium | Not detectedReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| ZincA naturally occurring metal that can also enter water from corroding pipes. | Not detected mg/LReported levelTahoe Main System System #33110001 Groundwater Park Well | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| CalciumA naturally occurring mineral that contributes to water hardness. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
| IronA naturally occurring metal common in groundwater. | 2005 ug/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
| MagnesiumA naturally occurring mineral that contributes to water hardness. | 8.6 mg/LReported levelCarnelian Woods System #3110023 Groundwater Park Well | None set | Detected — no federal limit |
+By source (3)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| NickelA metal from natural deposits and industrial discharge. | 2014 ug/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well +1 more
| |||
| SodiumA naturally occurring salt component. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave +1 more
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| FluorideA mineral often added to drinking water to help prevent tooth decay. | Not detectedReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | 2MCL | None detected |
+By source (3)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well, Carnelian Woods System #3110023 Groundwater Park Well
| |||
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | Not detected mg/LReported levelCarnelian Woods System #3110023 Groundwater Park Well | 10 mg/LMCL | None detected |
+By source (3)— Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave
| |||
| NitriteA compound from fertilizer runoff, sewage, and erosion of natural deposits. | Not detected mg/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | None detected |
+By source (3)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well, Tahoe Main System System #33110001 Groundwater Park Well
| |||
| ChlorideA naturally occurring salt compound. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
| SulfateA naturally occurring mineral from rock and soil. | 2014 mg/LReported levelDollar Cove System #3110036 Groundwater Tahoe City PUD | None set | Detected — no federal limit |
+By source (4)— Dollar Cove System #3110036 Groundwater Tahoe City PUD, Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Tahoe Main System System #33110001 Groundwater Park Well +1 more
| |||
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chromium | Not detected ug/LReported levelTahoe Main System System #33110001 Lake Tahoe Nat'l Ave | None set | None detected |
+By source (2)— Tahoe Main System System #33110001 Lake Tahoe Nat'l Ave, Carnelian Woods System #3110023 Groundwater Park Well
| |||
People also ask about North Tahoe Pud - Main — Tahoe Vista, Ca, CA's water
+Is North Tahoe Pud - Main — Tahoe Vista, Ca, CA tap water safe to drink in 2021?
The 2021 Consumer Confidence Report for the North Tahoe Pud - Main — Tahoe Vista, Ca, CA water utility lists 1 contaminant at or above the federal limit: HAA5. Whether that means the water is "unsafe" depends on which contaminant, how long the exposure, and individual health factors. The table on this page shows the measured value, the federal threshold, and the regulated statistic used for compliance.
+What contaminants are in North Tahoe Pud - Main — Tahoe Vista, Ca, CA tap water?
35 contaminants were measured in North Tahoe Pud - Main — Tahoe Vista, Ca, CA's 2021 Consumer Confidence Report, spanning metals, physical & aggregate, and inorganic chemicals. 5 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Which contaminants exceed federal limits in North Tahoe Pud - Main — Tahoe Vista, Ca, CA tap water?
One contaminant in North Tahoe Pud - Main — Tahoe Vista, Ca, CA's 2021 report sits at or above the federal limit: HAA5 (31.7× the limit). The EPA enforces these limits against the regulated reporting statistic — typically a running annual average or 90th percentile — not a one-off sample spike.
+What is the worst contaminant in North Tahoe Pud - Main — Tahoe Vista, Ca, CA tap water?
The contaminant with the highest measured value relative to its federal limit in the 2021 report is HAA5, at 31.7× the federal threshold. It belongs to the disinfection byproducts family of contaminants.
+Where does the data on this page come from?
Every value is transcribed from North Tahoe Pud - Main — Tahoe Vista, Ca, CA's 2021 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is North Tahoe Pud - Main — Tahoe Vista, Ca, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2021 report; a new report will replace it once the utility publishes its next annual update.