Tap WaterIndex

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Tap water quality report

Delmont

EPA monitoring tested this supplier for 5 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

5
contaminants tested
5
detected
153
people served
10
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
SWP
Ownership
Local government
Counties served
Douglas

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.

10
health-based violations
24
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2018-12-01
TT Health-based Resolved 2018-12-01
TT Health-based Resolved 2012-04-20
TT Health-based Resolved 2012-04-20
MCL Health-based Resolved 1996-08-01 → 1996-08-31
MCL Health-based Resolved 1996-08-01 → 1996-08-31
MCL Health-based Resolved 1996-08-01 → 1996-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31
MCL Health-based Resolved 1991-08-01 → 1991-08-31

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 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
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Copper
100 µg/L 7.7%
of the EPA limit 1300 µg/L
 10/10 SYR4 2014–2017
Lead
1.3 µg/L 8.7%
of the EPA limit 15 µg/L
 10/10 SYR4 2014–2017
TTHM
75.7 µg/L 95%
of the EPA limit 80 µg/L
 7/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
53.7 µg/L 90%
of the EPA limit 60 µg/L
 7/7 SYR4 2013–2019

Utility contact

Contact
LLOYD STILES
Phone
6057796961
Email
delmontfinance@midstatesd.net

Frequently asked questions about Delmont

Is Delmont tap water safe to drink?

EPA monitoring detected 5 contaminants in Delmont'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 Delmont's water?

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

How many people does Delmont serve?

Delmont reports serving 153 people in South Dakota, per its EPA record.

Has Delmont had any water quality violations?

The EPA has 24 violations on file for Delmont, of which 10 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.