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Tap water quality report

Derby, City of

EPA monitoring tested this supplier for 44 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
15
detected
25,413
people served
30
health-based violations
Kansas rankingsLead in KansasPFAS in Kansas
Water source
SWP
Ownership
Private
Counties served
Sedgwick

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.

30
health-based violations
63
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-01-01 → 2013-01-31
MCL Health-based Resolved 2013-01-01 → 2013-01-31
MCL Health-based Resolved 2013-01-01 → 2013-01-31
MCL Health-based Resolved 2013-01-01 → 2013-01-31
MCL Health-based Resolved 2013-01-01 → 2013-01-31
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30
MCL Health-based Resolved 2009-09-01 → 2009-09-30

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
Bromodichloromethane
15.75 µg/L
No EPA limit set
worst single sample: 23 µg/L
126/126 SYR4 2012–2019
Bromoform
4.375 µg/L
No EPA limit set
worst single sample: 5.7 µg/L
126/126 SYR4 2012–2019
Chloroform
15 µg/L
No EPA limit set
worst single sample: 30 µg/L
126/126 SYR4 2012–2019
Dibromoacetic Acid
4.475 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
126/126 SYR4 2012–2019
Dibromochloromethane
15.75 µg/L
No EPA limit set
worst single sample: 17 µg/L
126/126 SYR4 2012–2019
Dichloroacetic Acid
11 µg/L
No EPA limit set
worst single sample: 18 µg/L
126/126 SYR4 2012–2019
TTHM
50.75 µg/L 63%
of the EPA limit 80 µg/L
worst single sample: 69 µg/L
126/126 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
20.85 µg/L 35%
of the EPA limit 60 µg/L
worst single sample: 53 µg/L
124/126 SYR4 2012–2019
Copper
301 µg/L 23%
of the EPA limit 1300 µg/L
worst single sample: 460 µg/L
119/119 SYR4 2012–2018
Trichloroacetic Acid
4.54 µg/L
No EPA limit set
worst single sample: 9.6 µg/L
114/126 SYR4 2012–2019
Monobromoacetic Acid
2.52 µg/L
No EPA limit set
worst single sample: 21 µg/L
77/126 SYR4 2012–2019
Lead
10.45 µg/L 70%
of the EPA limit 15 µg/L
worst single sample: 31 µg/L
47/119 SYR4 2012–2018
Monochloroacetic Acid
17.25 µg/L
No EPA limit set
worst single sample: 18 µg/L
16/126 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 15/15 LCR 2024
Lithium
31.8 µg/L
No EPA limit set
 4/4 UCMR-5 2023
29 contaminants tested, none detected
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Utility contact

Contact
CURTIS, DILLAN
Phone
316-788-1519
Email
[email protected]

Frequently asked questions about Derby, City of

Is Derby, City of tap water safe to drink?

EPA monitoring detected 15 contaminants in Derby, 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 Derby, City of's water?

EPA monitoring detected Bromodichloromethane, Bromoform, Chloroform, Dibromoacetic Acid, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Derby, City of serve?

Derby, City of reports serving 25,413 people in Kansas, per its EPA record.

Has Derby, City of had any water quality violations?

The EPA has 63 violations on file for Derby, City of, of which 30 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.