What was found in Westminster's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4540 µg/L 45% of the EPA limit 10000 µg/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2019 | 6/9 | SYR4 |
| Nitrate-Nitrite | 3100 µg/L 31% of the EPA limit 10000 µg/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2015 | 5/9 | SYR4 |
| Fluoride | 629.5 µg/L 16% of the EPA limit 4000 µg/L Highest in the city: WESTMINSTER CITY OF (SC3710003) · 9,588 people · 2019 | 4/9 | SYR4 |
| Copper | 67 µg/L 5.2% of the EPA limit 1300 µg/L Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2017
Highest in the city: 450 µg/L — CHEROKEE CREEK BOYS SCHOOL (SC3770002) · 40 people · 2019 | 9/9 | SYR4 |
| Lead | 11.23 µg/L 75% of the EPA limit 15 µg/L Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2017
Highest in the city: 259.75 µg/L — WESTMINSTER CITY OF (SC3710003) · 9,588 people · 2019 | 6/9 | SYR4 |
| TTHM | 81.695 µg/L 102% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019 | 4/9 | SYR4 |
| Chloroform | 72.885 µg/L No EPA limit set Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019
Highest in the city: 74.115 µg/L — WESTMINSTER CITY OF (SC3710003) · 9,588 people · 2019 | 4/9 | SYR4 |
| Barium | 63.1 µg/L 3.2% of the EPA limit 2000 µg/L Highest in the city: PORT BASS II (SC3750012) · 165 people · 2019 | 2/9 | SYR4 |
| Total Haloacetic Acids (HAA5) | 38.945 µg/L 65% of the EPA limit 60 µg/L Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019
Highest in the city: 53.225 µg/L — CHICKASAW POINT (SC3750010) · 823 people · 2019 | 4/9 | SYR4 |
| Trichloroacetic Acid | 24.55 µg/L No EPA limit set Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019
Highest in the city: 31.3985 µg/L — WESTMINSTER CITY OF (SC3710003) · 9,588 people · 2019 | 4/9 | SYR4 |
| Chromium | 26 µg/L 26% of the EPA limit 100 µg/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2019 | 1/9 | SYR4 |
| Dichloroacetic Acid | 16.335 µg/L No EPA limit set Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019
Highest in the city: 24.125 µg/L — CHICKASAW POINT (SC3750010) · 823 people · 2019 | 4/9 | SYR4 |
| Combined Uranium | 11 µg/L 37% of the EPA limit 30 µg/L Highest in the city: PORT BASS I (SC3750002) · 681 people · 2019 | 1/9 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.4455 pCi/L 63% of the EPA limit 15 pCi/L Highest in the city: PORT BASS I (SC3750002) · 681 people · 2019 | 3/9 | SYR4 |
| Bromodichloromethane | 7.91 µg/L No EPA limit set Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019
Highest in the city: 8.26 µg/L — CHICKASAW POINT (SC3750010) · 823 people · 2019 | 4/9 | SYR4 |
| Gross Beta Particle Activity | 6.496 pCi/L No EPA limit set Highest in the city: PORT BASS I (SC3750002) · 681 people · 2019 | 2/9 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.8 µg/L 47% of the EPA limit 6 µg/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2016 | 2/9 | SYR4 |
| Dibromochloromethane | 1.6 µg/L No EPA limit set Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2019 | 4/9 | SYR4 |
| Combined Radium (-226 And -228) | 0.1717 pCi/L 3.4% of the EPA limit 5 pCi/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2019 | 1/9 | SYR4 |
| Cadmium | 0.1500 µg/L 3% of the EPA limit 5 µg/L Highest in the city: TIMBER LAKE II (SC3750007) · 93 people · 2019 | 1/9 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: PIONEER RURAL WATER DIST (SC3720001) · 16,929 people · 2024
Highest in the city: 0.0070 mg/L — CHICKASAW POINT (SC3750010) · 823 people · 2024 | 9/9 | LCR |
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 the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Westminster
| Supplier | Population served |
|---|---|
| PIONEER RURAL WATER DIST (SC3720001) | 16,929 |
| WESTMINSTER CITY OF (SC3710003) | 9,588 |
| FOXWOOD HILLS (SC3750025) | 1,703 |
| CHICKASAW POINT (SC3750010) | 823 |
| PORT BASS I (SC3750002) | 681 |
| TIMBER LAKE I (SC3750006) | 283 |
| PORT BASS II (SC3750012) | 165 |
| TIMBER LAKE II (SC3750007) | 93 |
| CHEROKEE CREEK BOYS SCHOOL (SC3770002) | 40 |
Frequently asked questions about Westminster tap water
Is Westminster tap water safe to drink?
EPA testing detected 21 contaminants in the water serving Westminster. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Westminster?
9 public water suppliers report drinking-water monitoring for Westminster, South Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Westminster's water?
The contaminants EPA monitoring detected in Westminster include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Lead. The full list, with the level at the main supplier and the data source, is in the table above.
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.