| Arsenic | 0.23 ppb. average of all samples highest sample 0.6 ppb detected in 2 of 3 samples | 0.004 ppb (California OEHHA 2004) | 10 ppb | 58× the health guideline |
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| Nitrite | 118 ppb. average of all samples highest sample 800 ppb detected in 6 of 14 samples | None published | 1,000 ppb | Not above its guideline, or no guideline |
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| Fluoride | 428 ppb. average of all samples highest sample 580 ppb detected in 6 of 6 samples | None published | 4,000 ppb | Not above its guideline, or no guideline |
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| Nitrate | 393 ppb. average of all samples highest sample 1,200 ppb detected in 7 of 9 samples | None published | 10,000 ppb | Not above its guideline, or no guideline |
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| Haloacetic acids (HAA5) | 0.75 ppb. average of all samples highest sample 8 ppb detected in 34 of 76 samples | None published | 60 ppb | Not above its guideline, or no guideline |
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| Chromium (total) | 0.17 ppb. average of all samples highest sample 0.5 ppb detected in 1 of 3 samples | None published | 100 ppb | Not above its guideline, or no guideline |
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| Total trihalomethanes (TTHMs) | 0.1 ppb. average of all samples highest sample 1.3 ppb detected in 18 of 76 samples | None published | 80 ppb | Not above its guideline, or no guideline |
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| Barium | 1 ppb. average of all samples highest sample 2.8 ppb detected in 2 of 3 samples | None published | 2,000 ppb | Not above its guideline, or no guideline |
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| Aluminum | 4.23 ppb. average of all samples highest sample 12.7 ppb detected in 1 of 3 samples | None published | No federal limit | Not above its guideline, or no guideline |
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| Copper | 6.6 ppb. average of all samples highest sample 14 ppb detected in 3 of 3 samples Measured where water enters the distribution system, not at the tap. EPA's action level applies to tap samples. | None published | 1,300 ppb (EPA action level, 90th percentile) |
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