| PFBS | 12 pptaverage of all sampleshighest sample 17 pptdetected in 10 of 10 samples | No federal limit | 2,000 ppt | 2025 |
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| Nitrate | 4,726 ppbaverage of all sampleshighest sample 7,100 ppbdetected in 69 of 70 samples | 10,000 ppb | None published | 2018-2022 |
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| Fluoride | 301 ppbaverage of all sampleshighest sample 820 ppbdetected in 16 of 16 samples | 4,000 ppb | None published | 2018-2022 |
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| Total trihalomethanes (TTHMs) | 40.3 ppbaverage of all sampleshighest sample 87.4 ppbdetected in 76 of 76 samples | 80 ppb | None published | 2018-2022 |
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| Haloacetic acids (HAA9) | 28.5 ppbaverage of all sampleshighest sample 41.6 ppbdetected in 4 of 4 samples | No federal limit | None published | 2019 |
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| Barium | 15.5 ppbaverage of all sampleshighest sample 24.4 ppbdetected in 5 of 5 samples | 2,000 ppb | None published | 2020 |
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| Haloacetic acids (HAA5) | 13.1 ppbaverage of all sampleshighest sample 34.1 ppbdetected in 76 of 76 samples | 60 ppb | None published | 2018-2022 |
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| Copper | 7.7 ppbaverage of all sampleshighest sample 15 ppbdetected in 5 of 5 samplesMeasured where water enters the distribution system, not at the tap. EPA's action level applies to tap samples. | 1,300 ppb (EPA action level, 90th percentile) | None published | 2020 |
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| PFBA | 6.42 pptaverage of all sampleshighest sample 9.8 pptdetected in 9 of 10 samples | No federal limit | None published | 2025 |
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| PFPeA | 5.97 pptaverage of all sampleshighest sample 14.6 pptdetected in 6 of 10 samples | No federal limit | None published | 2025 |
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| PFHxA | 5.04 pptaverage of all sampleshighest sample 11.1 pptdetected in 6 of 10 samples | No federal limit | None published | 2025 |
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| Dibromoacetic acid | 4.47 ppbaverage of all sampleshighest sample 7.7 ppbdetected in 44 of 44 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Uranium | 4.14 ppbaverage of all sampleshighest sample 15.4 ppbdetected in 5 of 5 samples | 30 ppb | None published | 2020 |
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| Dichloroacetic acid | 3.99 ppbaverage of all sampleshighest sample 8.7 ppbdetected in 43 of 44 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| PFHpA | 2.88 pptaverage of all sampleshighest sample 6.6 pptdetected in 6 of 10 samples | No federal limit | None published | 2025 |
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| Trichloroacetic acid | 2.42 ppbaverage of all sampleshighest sample 4.8 ppbdetected in 42 of 44 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Nitrite | 1.74 ppbaverage of all sampleshighest sample 120 ppbdetected in 1 of 69 samples | 1,000 ppb | None published | 2018-2022 |
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| PFHxSEPA set a limit in 2024 and proposed withdrawing it in May 2026. | 1.72 pptaverage of all sampleshighest sample 3.8 pptdetected in 5 of 10 samples | 10 ppt | None published | 2025 |
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| Gross alpha | 1.34 pCi/Laverage of all sampleshighest sample 6.7 pCi/Ldetected in 1 of 5 samples | 15 pCi/L | None published | 2020 |
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| Aluminum | 1.3 ppbaverage of all sampleshighest sample 1.5 ppbdetected in 5 of 5 samples | No federal limit | None published | 2020 |
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| Chromium (total) | 0.88 ppbaverage of all sampleshighest sample 3 ppbdetected in 5 of 5 samples | 100 ppb | None published | 2020 |
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| Radium-226 + Radium-228 | 0.54 pCi/Lsum of the radium-226 and radium-228 averages | 5 pCi/L | None published | 2020 |
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| Manganese | 0.52 ppbaverage of all sampleshighest sample 2.5 ppbdetected in 2 of 5 samples | No federal limit | None published | 2020 |
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| Radium-226 | 0.37 pCi/Laverage of all sampleshighest sample 1.02 pCi/Ldetected in 2 of 5 samples | Counts toward the combined 5 pCi/L limit for radium-226 and radium-228 | None published | 2020 |
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| Monochloroacetic acid | 0.15 ppbaverage of all sampleshighest sample 1.4 ppbdetected in 6 of 44 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Monobromoacetic acid | 0.12 ppbaverage of all sampleshighest sample 1.2 ppbdetected in 6 of 43 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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