| Haloacetic acids (HAA9) | 42.4 ppbaverage of all sampleshighest sample 62.5 ppbdetected in 8 of 8 samples | No federal limit | None published | 2018-2019 |
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| Haloacetic acids (HAA5) | 23.5 ppbaverage of all sampleshighest sample 42.6 ppbdetected in 74 of 74 samples | 60 ppb | None published | 2018-2022 |
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| Dichloroacetic acid | 13.9 ppbaverage of all sampleshighest sample 23.4 ppbdetected in 43 of 43 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Total trihalomethanes (TTHMs) | 11.7 ppbaverage of all sampleshighest sample 24.4 ppbdetected in 75 of 75 samples | 80 ppb | None published | 2018-2022 |
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| PFPeA | 8.35 pptaverage of all sampleshighest sample 11 pptdetected in 2 of 2 samples | No federal limit | None published | 2024-2025 |
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| PFBA | 7.5 pptaverage of all sampleshighest sample 8.1 pptdetected in 2 of 2 samples | No federal limit | None published | 2024-2025 |
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| Trichloroacetic acid | 5.48 ppbaverage of all sampleshighest sample 14.4 ppbdetected in 43 of 43 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| PFHxA | 5.15 pptaverage of all sampleshighest sample 6.2 pptdetected in 2 of 2 samples | No federal limit | None published | 2024-2025 |
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| Manganese | 4.75 ppbaverage of all sampleshighest sample 6.2 ppbdetected in 2 of 2 samples | No federal limit | None published | 2018-2019 |
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| PFOAEPA's 2024 rule sets a limit of 4.0 ppt; water systems must meet it by April 2029. In May 2026 EPA proposed allowing extensions to April 2031. EPA's goal (MCLG) is zero. | 2.15 pptaverage of all sampleshighest sample 4.3 pptdetected in 1 of 2 samples | 4 ppt | None published | 2024-2025 |
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| PFBS | 1.7 pptaverage of all sampleshighest sample 3.4 pptdetected in 1 of 2 samples | No federal limit | 2,000 ppt | 2024-2025 |
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| PFHpA | 1.5 pptaverage of all sampleshighest sample 3 pptdetected in 1 of 2 samples | No federal limit | None published | 2024-2025 |
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| Monochloroacetic acid | 0.67 ppbaverage of all sampleshighest sample 2.31 ppbdetected in 23 of 42 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Carbon tetrachloride | 0.5 ppbaverage of all sampleshighest sample 0.5 ppbdetected in 1 of 1 sample | 5 ppb | None published | 2022 |
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| Benzene | 0.5 ppbaverage of all sampleshighest sample 0.5 ppbdetected in 1 of 1 sample | 5 ppb | None published | 2022 |
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| Trichloroethylene (TCE) | 0.5 ppbaverage of all sampleshighest sample 0.5 ppbdetected in 1 of 1 sample | 5 ppb | None published | 2022 |
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| Tetrachloroethylene (PCE) | 0.5 ppbaverage of all sampleshighest sample 0.5 ppbdetected in 1 of 1 sample | 5 ppb | None published | 2022 |
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| Vinyl chloride | 0.5 ppbaverage of all sampleshighest sample 0.5 ppbdetected in 1 of 1 sample | 2 ppb | None published | 2022 |
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| Dibromoacetic acid | 0.3 ppbaverage of all sampleshighest sample 1.67 ppbdetected in 19 of 42 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Monobromoacetic acid | 0.03 ppbaverage of all sampleshighest sample 0.65 ppbdetected in 4 of 41 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| Fluoride* | 637 ppbaverage of all sampleshighest sample 830 ppbdetected in 223 of 223 samples | 4,000 ppb | None published | 2018-2022 |
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| Nitrate* | 119 ppbaverage of all sampleshighest sample 350 ppbdetected in 16 of 16 samples | 10,000 ppb | None published | 2018-2022 |
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| 6:2 FTSA* | 40.9 pptaverage of all sampleshighest sample 190 pptdetected in 3 of 8 samples | No federal limit | None published | 2023-2024 |
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| Nitrite* | 19.3 ppbaverage of all sampleshighest sample 64 ppbdetected in 13 of 16 samples | 1,000 ppb | None published | 2018-2022 |
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| Barium* | 4.77 ppbaverage of all sampleshighest sample 5.6 ppbdetected in 3 of 3 samples | 2,000 ppb | None published | 2020 |
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| Aluminum* | 3.93 ppbaverage of all sampleshighest sample 5 ppbdetected in 3 of 3 samples | No federal limit | None published | 2020 |
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| PFHxS*EPA set a limit in 2024 and proposed withdrawing it in May 2026. | 2.58 pptaverage of all sampleshighest sample 9.4 pptdetected in 3 of 8 samples | 10 ppt | None published | 2023-2024 |
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| 8:2 FTSA* | 2.23 pptaverage of all sampleshighest sample 9.6 pptdetected in 2 of 8 samples | No federal limit | None published | 2023-2024 |
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| PFNA*EPA set a limit in 2024 and proposed withdrawing it in May 2026. | 1.4 pptaverage of all sampleshighest sample 6.5 pptdetected in 2 of 8 samples | 10 ppt | None published | 2023-2024 |
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| Copper* | 1.38 ppbaverage of all sampleshighest sample 2.4 ppbdetected in 4 of 4 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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| Selenium* | 0.6 ppbaverage of all sampleshighest sample 1 ppbdetected in 2 of 3 samples | 50 ppb | None published | 2020 |
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| Uranium* | 0.49 ppbaverage of all sampleshighest sample 1.47 ppbdetected in 1 of 3 samples | 30 ppb | None published | 2020 |
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| Radium-226* | 0.13 pCi/Laverage of all sampleshighest sample 0.4 pCi/Ldetected in 1 of 3 samples | Counts toward the combined 5 pCi/L limit for radium-226 and radium-228 | None published | 2020 |
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