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Oglala Rws Pipeline

EPA monitoring tested this supplier for 99 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

99
contaminants tested
15
detected
3,562
people served
22
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Federal government

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.

22
health-based violations
49
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-01-01
MCL Health-based Archived 1996-09-01 → 1996-09-30
MCL Health-based Archived 1996-08-01 → 1996-08-31
MCL Health-based Archived 1995-12-01 → 1995-12-31
MCL Health-based Archived 1995-11-01 → 1995-11-30
MCL Health-based Archived 1995-09-01 → 1995-09-30
MCL Health-based Archived 1995-09-01 → 1995-09-30
MCL Health-based Archived 1995-08-01 → 1995-08-31
MCL Health-based Archived 1995-08-01 → 1995-08-31
MCL Health-based Archived 1994-09-01 → 1994-09-30

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Fluoride
1200 µg/L 30%
of the EPA limit 4000 µg/L
worst single sample: 1500 µg/L
46/46 SYR4 2012–2018
Copper
228.6 µg/L 18%
of the EPA limit 1300 µg/L
worst single sample: 261 µg/L
19/20 SYR4 2018
Nitrate
2850 µg/L 28%
of the EPA limit 10000 µg/L
 12/12 SYR4 2014–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2024
TTHM
6.407 µg/L 8%
of the EPA limit 80 µg/L
worst single sample: 6.65 µg/L
7/7 SYR4 2014–2019
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
 7/7 SYR4 2014–2019
Nitrate-Nitrite
2380 µg/L 24%
of the EPA limit 10000 µg/L
worst single sample: 2400 µg/L
2/2 SYR4 2012–2013
Lithium
59 µg/L
No EPA limit set
 2/2 UCMR-5 2024
Arsenic
8 µg/L 80%
of the EPA limit 10 µg/L
 1/1 SYR4 2018
Barium
67 µg/L 3.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2018
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
 1/1 SYR4 2018
Combined Radium (-226 And -228)
0.8390 pCi/L 17%
of the EPA limit 5 pCi/L
 1/1 SYR4 2017
Lead
1 µg/L 6.7%
of the EPA limit 15 µg/L
 1/20 SYR4 2018
Methoxychlor
0.3100 µg/L 0.8%
of the EPA limit 40 µg/L
 1/6 SYR4 2013–2019
Selenium
10 µg/L 20%
of the EPA limit 50 µg/L
 1/1 SYR4 2018
84 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, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryNetfosaaNfdhaNmefosaaOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JACOBS, CHUCK
Phone
605-867-1999
Email
[email protected]

Frequently asked questions about Oglala Rws Pipeline

Is Oglala Rws Pipeline tap water safe to drink?

EPA monitoring detected 15 contaminants in Oglala Rws Pipeline'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 Oglala Rws Pipeline's water?

EPA monitoring detected Fluoride, Copper, Nitrate, Lead, TTHM, and others. The full list with the level and data source for each is above.

How many people does Oglala Rws Pipeline serve?

Oglala Rws Pipeline reports serving 3,562 people in South Dakota, per its EPA record.

Has Oglala Rws Pipeline had any water quality violations?

The EPA has 49 violations on file for Oglala Rws Pipeline, of which 22 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.