Is Columbia City of (sc4010001) Tap Water Safe? Quality Report

Water source: Surface water
Ownership: Local government
Counties served: Richland

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2024-12-01 → 2024-12-31
MCL	Health-based	Resolved	2024-12-01 → 2024-12-31
MCL	Health-based	Resolved	2024-12-01 → 2024-12-31
MCL	Health-based	Resolved	2024-12-01 → 2024-12-31
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30
MCL	Health-based	Resolved	2021-04-01 → 2021-04-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfhxa	0.0057 µg/L	8/8	2025
Pfpea	0.0068 µg/L	8/8	2025
PFOA	0.0069 µg/L	6/8	2025
PFOS	0.0086 µg/L	6/8	2025
Hfpo-Da	0.0092 µg/L	5/8	2025
PFBS	0.0052 µg/L	4/8	2025
Pfhpa	0.0030 µg/L	1/8	2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	11.576 µg/L No EPA limit set worst single sample: 16.43 µg/L	312/312	SYR4	2012–2019
TTHM	46.152 µg/L 58% of the EPA limit 80 µg/L worst single sample: 64.7 µg/L	312/312	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	53.8685 µg/L 90% of the EPA limit 60 µg/L worst single sample: 68.6 µg/L	312/312	SYR4	2012–2019
Trichloroacetic Acid	20.8815 µg/L No EPA limit set worst single sample: 37.79 µg/L	312/312	SYR4	2012–2019
Chloroform	28.875 µg/L No EPA limit set worst single sample: 44.47 µg/L	311/312	SYR4	2012–2019
Dichloroacetic Acid	33.1375 µg/L No EPA limit set worst single sample: 42.45 µg/L	308/312	SYR4	2012–2019
Monobromoacetic Acid	6.0805 µg/L No EPA limit set worst single sample: 14.37 µg/L	284/312	SYR4	2012–2019
Dibromochloromethane	7.95 µg/L No EPA limit set worst single sample: 28.24 µg/L	277/312	SYR4	2012–2019
Dibromoacetic Acid	11.17 µg/L No EPA limit set worst single sample: 14.53 µg/L	105/312	SYR4	2012–2019
Copper	96.2 µg/L 7.4% of the EPA limit 1300 µg/L worst single sample: 450 µg/L	99/100	SYR4	2014–2017
Lead	7.44 µg/L 50% of the EPA limit 15 µg/L worst single sample: 13 µg/L	33/100	SYR4	2014–2017
Nitrate	461 µg/L 4.6% of the EPA limit 10000 µg/L worst single sample: 470 µg/L	30/34	SYR4	2012–2019
Lead	0.0050 mg/L 33% of the EPA limit 0.0150 mg/L	21/21	LCR	2023
Bromoform	16.4185 µg/L No EPA limit set worst single sample: 18.28 µg/L	18/312	SYR4	2012–2019
Fluoride	654 µg/L 16% of the EPA limit 4000 µg/L worst single sample: 670 µg/L	17/17	SYR4	2012–2019
Monochloroacetic Acid	22.2168 µg/L No EPA limit set worst single sample: 23.4888 µg/L	8/312	SYR4	2012–2019
Barium	240 µg/L 12% of the EPA limit 2000 µg/L	1/17	SYR4	2012–2019

81 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpsPFHXSPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: SHEALY, CLINT
Phone: 803-545-3400
Email: [email protected]; [email protected]; [email protected]

Frequently asked questions about Columbia City of (sc4010001)

Is Columbia City of (sc4010001) tap water safe to drink?

EPA monitoring detected 24 contaminants in Columbia City of (sc4010001)'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 Columbia City of (sc4010001)'s water?

EPA monitoring detected Bromodichloromethane, TTHM, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Columbia City of (sc4010001) serve?

Columbia City of (sc4010001) reports serving 354,068 people in South Carolina, per its EPA record.

Has Columbia City of (sc4010001) had any water quality violations?

The EPA has 66 violations on file for Columbia City of (sc4010001), of which 55 are 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.