Tap WaterIndex

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Tap water quality report

By Water District

EPA monitoring tested this supplier for 50 contaminants and detected 11. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
11
detected
13,320
people served
9
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Surface water
Ownership
Local government
Counties served
Bon Homme, Douglas, Hanson, Hutchinson, McCook, Turner, Yankton

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.

9
health-based violations
17
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2019-03-01 → 2019-03-31
TT Health-based Resolved 2007-03-01 → 2007-03-31
TT Health-based Resolved 2007-03-01 → 2007-03-31
TT Health-based Resolved 2007-03-01 → 2007-03-31
MR Monitoring Resolved 2014-08-01 → 2014-08-31

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
Copper
91 µg/L 7%
of the EPA limit 1300 µg/L
worst single sample: 200 µg/L
90/90 SYR4 2013–2019
Lead
4.9 µg/L 33%
of the EPA limit 15 µg/L
worst single sample: 10.4 µg/L
90/90 SYR4 2013–2019
TTHM
60.83 µg/L 76%
of the EPA limit 80 µg/L
worst single sample: 78.8 µg/L
60/60 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
34.605 µg/L 58%
of the EPA limit 60 µg/L
worst single sample: 52.2 µg/L
60/60 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Lithium
52 µg/L
No EPA limit set
 3/4 UCMR-5 2024
Antimony, Total
0.3000 µg/L 5%
of the EPA limit 6 µg/L
 1/1 SYR4 2013
Arsenic
3 µg/L 30%
of the EPA limit 10 µg/L
 1/1 SYR4 2013
Barium
13.5 µg/L 0.7%
of the EPA limit 2000 µg/L
 1/1 SYR4 2013
Chromium
1.7 µg/L 1.7%
of the EPA limit 100 µg/L
 1/1 SYR4 2013
Selenium
1.9 µg/L 3.8%
of the EPA limit 50 µg/L
 1/1 SYR4 2013
39 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityHfpo-DaMercuryNetfosaaNfdhaNmefosaaNitrateNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaThallium, Total

Utility contact

Contact
ROBERT STERNHAGEN
Phone
6054632531
Email
[email protected]

Frequently asked questions about By Water District

Is By Water District tap water safe to drink?

EPA monitoring detected 11 contaminants in By Water District'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 By Water District's water?

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

How many people does By Water District serve?

By Water District reports serving 13,320 people in South Dakota, per its EPA record.

Has By Water District had any water quality violations?

The EPA has 17 violations on file for By Water District, of which 9 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.