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Tap water quality report

Black Hawk, SD

EPA monitoring detected 12 contaminants across the 47 water suppliers serving Black Hawk. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

47
water suppliers
10,826
people served
12
contaminants found
South Dakota rankings Lead in South Dakota PFAS in South Dakota

What was found in Black Hawk's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
4150 µg/L 42%
of the EPA limit 10000 µg/L
 29/47 SYR4
Fluoride
3900 µg/L 98%
of the EPA limit 4000 µg/L
 33/47 SYR4
Copper
1570 µg/L 121%
of the EPA limit, in the worst sample — 1300 µg/L
 45/47 SYR4
Barium
575 µg/L 29%
of the EPA limit 2000 µg/L
 31/47 SYR4
Gross Alpha, Excl. Radon And U
57.8 pCi/L 385%
of the EPA limit, in the worst sample — 15 pCi/L
 30/47 SYR4
TTHM
43.5 µg/L 54%
of the EPA limit 80 µg/L
 28/47 SYR4
Combined Uranium
23.5 µg/L 78%
of the EPA limit 30 µg/L
 6/47 SYR4
Lead
22 µg/L 147%
of the EPA limit, in the worst sample — 15 µg/L
 45/47 SYR4
Total Haloacetic Acids (HAA5)
20.9 µg/L 35%
of the EPA limit 60 µg/L
 8/47 SYR4
Arsenic
9 µg/L 90%
of the EPA limit 10 µg/L
 8/47 SYR4
Selenium
9 µg/L 18%
of the EPA limit 50 µg/L
 3/47 SYR4
Lead
0.0140 mg/L 93%
of the EPA limit 0.0150 mg/L
 46/47 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 single worst sample on record — 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 Black Hawk

SupplierPopulation served
BLACK HAWK WATER USER DISTRICT 4,500
NORTHDALE SANITARY DISTRICT 1,075
TERRY TROJAN WATER DISTRICT 400
GOLDEN VALLEY WATER COMPANY 283
WOODLAND HILLS SANITARY DISTRICT 255
VALLEY VIEW WATER COMPANY 248
SUNNYSIDE MOBILE HOME PARK II 235
DRY CREEK ESTATES 233
VIEWFIELD RURAL WATER SYSTEM 220
PINE HILLS PARK 200
RENDEZVOUS RANCH 195
PINE CLIFF ESTATES 180
SPRING CREEK ACRES 172
RAPID CITY MOBILE HOME PARK 170
RUSHMORE RANCH ESTATES 168
CANYON SPRINGS WATER AND SEWER DISTR 163
HIGH MEADOWS WATER COMPANY 140
MIDLAND HEIGHTS 130
EAST RIDGE ACRES 118
COUNTRY ROAD ESTATES 112
PRAIRIE HAVEN SUBDIVISION 105
D & E WATER COMPANY 100
GOLDEN MEADOWS 96
HEARTLAND COUNTRY RANCHETTES 95
QUAAL WATER ASSOCIATION 95
OAK MOUNTAIN COUNTRY ESTATES 85
PEACEFUL PINES II 71
CROOKED OAKS CANYON HOMEOWNERS 70
EDELWEISS MOUNTAIN IMPROVEMENT ASSOC 70
THRALL MTN. PROPERTY OWNERS ASSOCIAT 70
WILD TURKEY ESTATES II 70
SHIRT TAIL GULCH DEVELOPMENT 65
WHISPERING WILLOWS 64
HIGH MEADOWS RANCHETTES 60
OWANKA RURAL WATER SYSTEM 52
AUTUMN MEADOWS SANITARY DISTRICT 49
EAGLE WATER COMPANY 48
CENTENNIAL VISTA ESTATES 44
SACORA MOBILE HOME PARK 42
76 RANCH ESTATES 40
PILLAR PEAK 38
VALHALLA ADDITION 38
HIGH SHERIDAN RANCH 38
WILD TURKEY ESTATES I 33
THE TIMBERS 33
NORRIS PEAK WATER USERS ASSOC 30
THREE PEAKS WATER ASSOCIATION 28

Frequently asked questions about Black Hawk tap water

Is Black Hawk tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Black Hawk. 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 Black Hawk?

47 public water suppliers report drinking-water monitoring for Black Hawk, South Dakota to the EPA. Each is listed above with its population served.

What contaminants are in Black Hawk's water?

The contaminants EPA monitoring detected in Black Hawk include Nitrate, Fluoride, Copper, Barium, Gross Alpha, Excl. Radon And U. The full list, with the highest level found 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.