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Tap water quality report

North Martin Water

EPA monitoring tested this supplier for 73 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

73
contaminants tested
13
detected
78
people served
11
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
GWP
Ownership
Native American

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.

11
health-based violations
31
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2022-10-07
MCL Health-based Resolved 2022-01-01 → 2022-03-31
MCL Health-based Resolved 2021-10-01 → 2021-12-31
MCL Health-based Resolved 2021-07-01 → 2021-09-30
MCL Health-based Resolved 2021-04-01 → 2021-06-30
MCL Health-based Resolved 2021-01-01 → 2021-03-31
MCL Health-based Resolved 2021-01-01 → 2021-03-31
MCL Health-based Resolved 2021-01-01 → 2021-03-31
MCL Health-based Resolved 2020-10-01 → 2020-12-31
MCL Health-based Resolved 2013-04-01 → 2013-04-30

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
1030 µg/L 10%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2025
Gross Alpha, Excl. Radon And U
6.6 pCi/L 44%
of the EPA limit 15 pCi/L
 8/8 SYR4 2012–2017
Combined Uranium
6.258 µg/L 21%
of the EPA limit 30 µg/L
 7/7 SYR4 2012–2014
Nitrate-Nitrite
1030 µg/L 10%
of the EPA limit 10000 µg/L
 7/7 SYR4 2012–2019
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 6/8 SYR4 2012–2017
Copper
108 µg/L 8.3%
of the EPA limit 1300 µg/L
 5/5 SYR4 2018
Fluoride
600 µg/L 15%
of the EPA limit 4000 µg/L
 4/4 SYR4 2012–2019
Arsenic
12 µg/L 120%
of the EPA limit, in the worst sample — 10 µg/L
 3/3 SYR4 2012–2019
Barium
135 µg/L 6.8%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2019
TTHM
2 µg/L 2.5%
of the EPA limit 80 µg/L
 3/3 SYR4 2016–2018
Total Haloacetic Acids (HAA5)
15 µg/L 25%
of the EPA limit 60 µg/L
 3/3 SYR4 2016–2018
Lead
2 µg/L 13%
of the EPA limit 15 µg/L
 1/5 SYR4 2018
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HERNANDEZ, MISTY
Phone
605-867-5804
Email
h20sewer@gwtc.net

Frequently asked questions about North Martin Water

Is North Martin Water tap water safe to drink?

EPA monitoring detected 13 contaminants in North Martin Water'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 North Martin Water's water?

EPA monitoring detected Nitrate, Lead, Gross Alpha, Excl. Radon And U, Combined Uranium, Nitrate-Nitrite, and others. The full list with the level and data source for each is above.

How many people does North Martin Water serve?

North Martin Water reports serving 78 people in South Dakota, per its EPA record.

Has North Martin Water had any water quality violations?

The EPA has 31 violations on file for North Martin Water, of which 11 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.