Compliance record
Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.
| Violation | Type | Status | Period |
|---|---|---|---|
| MCL | Health-based | Archived | 1991-08-01 → 1991-08-31 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 2015-09-01 → 2015-09-30 |
| MR | Monitoring | Resolved | 1993-01-01 |
| MR | Monitoring | Resolved | 1992-07-01 → 1993-12-06 |
| MR | Monitoring | Resolved | 1992-07-01 → 1993-12-06 |
PFAS detected
Other contaminants detected
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| TTHM | 23.506 µg/L 29% of the EPA limit 80 µg/L
worst single sample: 33.86 µg/L | 123/124 | SYR4 | 2012–2019 |
| Bromodichloromethane | 7.7105 µg/L No EPA limit set
worst single sample: 9.85 µg/L | 122/124 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 40.8025 µg/L 68% of the EPA limit 60 µg/L
worst single sample: 76.8 µg/L | 122/124 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 30.019 µg/L No EPA limit set
worst single sample: 71.07 µg/L | 118/124 | SYR4 | 2012–2019 |
| Dibromochloromethane | 6.27 µg/L No EPA limit set
worst single sample: 12.08 µg/L | 117/124 | SYR4 | 2012–2019 |
| Chloroform | 10.445 µg/L No EPA limit set
worst single sample: 19.66 µg/L | 111/124 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 9.818 µg/L No EPA limit set
worst single sample: 11.61 µg/L | 93/124 | SYR4 | 2012–2019 |
| Monobromoacetic Acid | 3.997 µg/L No EPA limit set
worst single sample: 5.9 µg/L | 75/124 | SYR4 | 2012–2019 |
| Trichloroacetic Acid | 5.151 µg/L No EPA limit set
worst single sample: 17.74 µg/L | 68/124 | SYR4 | 2012–2019 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L | 20/20 | LCR | 2025 |
| Bromoform | 13.078 µg/L No EPA limit set
worst single sample: 14.03 µg/L | 18/124 | SYR4 | 2012–2019 |
| Copper | 117 µg/L 9% of the EPA limit 1300 µg/L
worst single sample: 130 µg/L | 14/70 | SYR4 | 2013–2019 |
| Lead | 6.255 µg/L 42% of the EPA limit 15 µg/L
worst single sample: 8.4 µg/L | 14/70 | SYR4 | 2013–2019 |
| Monochloroacetic Acid | 8.925 µg/L No EPA limit set
worst single sample: 11.05 µg/L | 6/124 | SYR4 | 2012–2019 |
25 contaminants tested, none detected
Utility contact
Frequently asked questions about St John'S Water (sc1020002)
Is St John'S Water (sc1020002) tap water safe to drink?
EPA monitoring detected 19 contaminants in St John'S Water (sc1020002)'s water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.
What contaminants were detected in St John'S Water (sc1020002)'s water?
EPA monitoring detected TTHM, Bromodichloromethane, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, Dibromochloromethane, and others. The full list with the level and data source for each is above.
How many people does St John'S Water (sc1020002) serve?
St John'S Water (sc1020002) reports serving 22,592 people in South Carolina, per its EPA record.
Has St John'S Water (sc1020002) had any water quality violations?
The EPA has 15 violations on file for St John'S Water (sc1020002), of which 1 is health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.