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Tap water quality report

Rolla City of

EPA monitoring tested this supplier for 67 contaminants and detected 24. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

67
contaminants tested
24
detected
1,280
people served
3
health-based violations
North Dakota rankingsLead in North DakotaPFAS in North Dakota
Water source
Ground water
Ownership
Local government
Counties served
Rolette

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
19
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1999-08-01 → 1999-08-31
MCL Health-based Archived 1999-08-01 → 1999-08-31
MCL Health-based Archived 1999-08-01 → 1999-08-31
MR Monitoring Resolved 2023-11-01
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2013-10-01 → 2013-12-31
MR Monitoring Resolved 2010-10-01
MR Monitoring Resolved 2010-10-01

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
351.5 µg/L 27%
of the EPA limit 1300 µg/L
worst single sample: 976 µg/L
39/39 SYR4 2012–2017
Lead
8.4575 µg/L 56%
of the EPA limit 15 µg/L
worst single sample: 19.5 µg/L
36/39 SYR4 2012–2017
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2023
Total Haloacetic Acids (HAA5)
17.689 µg/L 29%
of the EPA limit 60 µg/L
worst single sample: 19.08 µg/L
14/16 SYR4 2012–2019
Bromodichloromethane
25.454 µg/L
No EPA limit set
worst single sample: 26.42 µg/L
13/16 SYR4 2012–2019
Bromoform
10.258 µg/L
No EPA limit set
worst single sample: 11.08 µg/L
13/16 SYR4 2012–2019
Dibromoacetic Acid
9.156 µg/L
No EPA limit set
worst single sample: 10.2 µg/L
13/16 SYR4 2012–2019
Dibromochloromethane
26.784 µg/L
No EPA limit set
worst single sample: 28.44 µg/L
13/16 SYR4 2012–2019
TTHM
74.236 µg/L 93%
of the EPA limit 80 µg/L
worst single sample: 80.47 µg/L
13/16 SYR4 2012–2019
Chloroform
16.69 µg/L
No EPA limit set
worst single sample: 16.87 µg/L
10/16 SYR4 2012–2019
Trichloroacetic Acid
5.1385 µg/L
No EPA limit set
worst single sample: 5.35 µg/L
10/16 SYR4 2012–2019
Dichloroacetic Acid
6.116 µg/L
No EPA limit set
worst single sample: 6.68 µg/L
9/16 SYR4 2012–2019
Nitrate-Nitrite
1354 µg/L 14%
of the EPA limit 10000 µg/L
worst single sample: 1450 µg/L
9/9 SYR4 2012–2019
Nitrate
1210 µg/L 12%
of the EPA limit 10000 µg/L
 4/4 SYR4 2014–2017
1,1,1-Trichloroethane
1.184 µg/L 0.6%
of the EPA limit 200 µg/L
worst single sample: 1.21 µg/L
2/3 SYR4 2017–2019
Arsenic
1.81 µg/L 18%
of the EPA limit 10 µg/L
 1/1 SYR4 2016
Barium
67.3 µg/L 3.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2017
Combined Radium (-226 And -228)
0.4800 pCi/L 9.6%
of the EPA limit 5 pCi/L
 1/1 SYR4 2017
Combined Uranium
8.2 µg/L 27%
of the EPA limit 30 µg/L
 1/1 SYR4 2017
Fluoride
784 µg/L 20%
of the EPA limit 4000 µg/L
 1/1 SYR4 2017
Gross Alpha, Excl. Radon And U
2.62 pCi/L 17%
of the EPA limit 15 pCi/L
 1/1 SYR4 2017
Monobromoacetic Acid
1.18 µg/L
No EPA limit set
 1/16 SYR4 2012–2019
Monochloroacetic Acid
2.65 µg/L
No EPA limit set
 1/16 SYR4 2012–2019
Selenium
1.47 µg/L 2.9%
of the EPA limit 50 µg/L
 1/1 SYR4 2017
43 contaminants tested, none detected
1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDinosebEndrinEthylbenzeneHeptachlorHeptachlor EpoxideLassoMercuryMethoxychlorNitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
RUSH, CLIFF
Email
[email protected]

Frequently asked questions about Rolla City of

Is Rolla City of tap water safe to drink?

EPA monitoring detected 24 contaminants in Rolla City of'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 Rolla City of's water?

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

How many people does Rolla City of serve?

Rolla City of reports serving 1,280 people in North Dakota, per its EPA record.

Has Rolla City of had any water quality violations?

The EPA has 19 violations on file for Rolla City of, 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.