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Tap water quality report

Watertown Municipal Utilities

EPA monitoring tested this supplier for 50 contaminants and detected 9. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

50
contaminants tested
9
detected
23,230
people served
3
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Local government
Counties served
Codington

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.

3
health-based violations
8
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MCL Health-based Resolved 2016-07-01 → 2016-09-30
MR Monitoring Resolved 1999-01-01 → 1999-12-31
MR Monitoring Resolved 1999-01-01 → 1999-12-31
MR Monitoring Resolved 1999-01-01 → 1999-12-31
MR Monitoring Archived 1976-07-01 → 1980-06-30
MR Monitoring Archived 1976-07-01 → 1980-06-30

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
TTHM
72.55 µg/L 91%
of the EPA limit 80 µg/L
worst single sample: 142 µg/L
104/104 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
21.765 µg/L 36%
of the EPA limit 60 µg/L
worst single sample: 50 µg/L
104/104 SYR4 2012–2019
Copper
65.5 µg/L 5%
of the EPA limit 1300 µg/L
worst single sample: 280 µg/L
90/90 SYR4 2012–2018
Lead
2.155 µg/L 14%
of the EPA limit 15 µg/L
worst single sample: 8.8 µg/L
90/90 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Lithium
12.4 µg/L
No EPA limit set
 2/2 UCMR-5 2025
Barium
20.2 µg/L 1%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Chromium
1.5 µg/L 1.5%
of the EPA limit 100 µg/L
 1/1 SYR4 2012
Selenium
0.9000 µg/L 1.8%
of the EPA limit 50 µg/L
 1/1 SYR4 2012
41 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBeryllium, TotalCadmiumCombined Radium (-226 And -228)Combined UraniumGross Alpha, Excl. Radon And UGross Beta Particle ActivityHfpo-DaMercuryNetfosaaNfdhaNmefosaaNitrateNitritePfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaThallium, Total

Utility contact

Contact
WAYNE LOVELIS
Phone
6058826233
Email
[email protected]

Frequently asked questions about Watertown Municipal Utilities

Is Watertown Municipal Utilities tap water safe to drink?

EPA monitoring detected 9 contaminants in Watertown Municipal Utilities'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 Watertown Municipal Utilities's water?

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

How many people does Watertown Municipal Utilities serve?

Watertown Municipal Utilities reports serving 23,230 people in South Dakota, per its EPA record.

Has Watertown Municipal Utilities had any water quality violations?

The EPA has 8 violations on file for Watertown Municipal Utilities, of which 3 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.