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Tap water quality report

Northdale Sanitary District

EPA monitoring tested this supplier for 20 contaminants and detected 7. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

20
contaminants tested
7
detected
1,075
people served
4
health-based violations
South Dakota rankingsLead in South DakotaPFAS in South Dakota
Water source
Ground water
Ownership
Local government
Counties served
Meade, Pennington

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.

4
health-based violations
11
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-02-28
TT Health-based Resolved 2024-02-28
TT Health-based Resolved 2015-02-01
TT Health-based Resolved 2015-02-01
MR Monitoring Resolved 2018-07-01 → 2018-09-30
MR Monitoring Resolved 2018-07-01 → 2018-09-30
MR Monitoring Resolved 2018-07-01 → 2018-09-30
MR Monitoring Archived 1992-09-01 → 1992-09-30
MR Monitoring Archived 1992-09-01 → 1992-09-30
MR Monitoring Archived 1976-06-01 → 1980-05-31

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
Copper
305 µg/L 23%
of the EPA limit 1300 µg/L
 30/30 SYR4 2012–2018
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
 30/30 SYR4 2012–2018
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Nitrate
623 µg/L 6.2%
of the EPA limit 10000 µg/L
 4/6 SYR4 2017–2019
Arsenic
6 µg/L 60%
of the EPA limit 10 µg/L
 2/4 SYR4 2018–2019
Barium
397 µg/L 20%
of the EPA limit 2000 µg/L
 1/1 SYR4 2012
Gross Alpha, Excl. Radon And U
6.39 pCi/L 43%
of the EPA limit 15 pCi/L
 1/1 SYR4 2018
13 contaminants tested, none detected
Antimony, TotalBeryllium, TotalCadmiumChromiumCombined Radium (-226 And -228)Combined UraniumGross Beta Particle ActivityMercuryNitriteSeleniumTTHMThallium, TotalTotal Haloacetic Acids (HAA5)

Utility contact

Contact
AL SAGE
Phone
6053917483
Email
sagewaterworks100@gmail.com

Frequently asked questions about Northdale Sanitary District

Is Northdale Sanitary District tap water safe to drink?

EPA monitoring detected 7 contaminants in Northdale Sanitary 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 Northdale Sanitary District's water?

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

How many people does Northdale Sanitary District serve?

Northdale Sanitary District reports serving 1,075 people in South Dakota, per its EPA record.

Has Northdale Sanitary District had any water quality violations?

The EPA has 11 violations on file for Northdale Sanitary District, of which 4 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.