| Haloacetic acids (HAA5) | 33.2 ppbaverage of all sampleshighest sample 49.5 ppbdetected in 9 of 9 samples | 60 ppb | None published | 2018-2022 |
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| Dichloroacetic acid | 20.6 ppbaverage of all sampleshighest sample 33.5 ppbdetected in 5 of 5 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| 6:2 FTSA | 14.1 pptaverage of all sampleshighest sample 20 pptdetected in 2 of 2 samples | No federal limit | None published | 2025 |
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| Total trihalomethanes (TTHMs) | 12.8 ppbaverage of all sampleshighest sample 19.3 ppbdetected in 8 of 9 samples | 80 ppb | None published | 2018-2022 |
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| PFBA | 11.2 pptaverage of all sampleshighest sample 12.1 pptdetected in 2 of 2 samples | No federal limit | None published | 2025 |
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| PFPeA | 10.9 pptaverage of all sampleshighest sample 12.6 pptdetected in 2 of 2 samples | No federal limit | None published | 2025 |
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| PFHxA | 10.2 pptaverage of all sampleshighest sample 12.4 pptdetected in 2 of 2 samples | No federal limit | None published | 2025 |
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| Trichloroacetic acid | 6.64 ppbaverage of all sampleshighest sample 8.2 ppbdetected in 5 of 5 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| PFHpA | 4.3 pptaverage of all sampleshighest sample 4.9 pptdetected in 2 of 2 samples | No federal limit | None published | 2025 |
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| PFBS | 3.35 pptaverage of all sampleshighest sample 3.4 pptdetected in 2 of 2 samples | No federal limit | 2,000 ppt | 2025 |
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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. | 2.35 pptaverage of all sampleshighest sample 4.7 pptdetected in 1 of 2 samples | 4 ppt | None published | 2025 |
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| Monochloroacetic acid | 1.74 ppbaverage of all sampleshighest sample 4.4 ppbdetected in 3 of 5 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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| PFHxSEPA set a limit in 2024 and proposed withdrawing it in May 2026. | 1.55 pptaverage of all sampleshighest sample 3.1 pptdetected in 1 of 2 samples | 10 ppt | None published | 2025 |
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| Dibromoacetic acid | 0.76 ppbaverage of all sampleshighest sample 1.1 ppbdetected in 4 of 5 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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| Haloacetic acids (HAA9)* | 37.6 ppbaverage of all sampleshighest sample 52.8 ppbdetected in 16 of 16 samples | No federal limit | None published | 2018-2019 |
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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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| 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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| Manganese* | 0.5 ppbaverage of all sampleshighest sample 1 ppbdetected in 2 of 3 samples | No federal limit | 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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| Chromium (total)* | 0.2 ppbaverage of all sampleshighest sample 0.3 ppbdetected in 3 of 3 samples | 100 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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| Monobromoacetic acid* | 0.07 ppbaverage of all sampleshighest sample 2.8 ppbdetected in 7 of 88 samples | Counts toward the 60 ppb limit for haloacetic acids (HAA5) | None published | 2020-2022 |
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