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Tap water quality report

Stockton

EPA monitoring tested this supplier for 71 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
18
detected
1,892
people served
41
health-based violations
Missouri rankingsLead in MissouriPFAS in Missouri
Water source
Ground water
Ownership
Local government
Counties served
Cedar

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.

41
health-based violations
55
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2002-02-01 → 2002-02-28
MCL Health-based Resolved 2002-02-01 → 2002-02-28
MCL Health-based Resolved 2002-02-01 → 2002-02-28
MCL Health-based Resolved 2002-02-01 → 2002-02-28
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30
MCL Health-based Resolved 1996-09-01 → 1996-09-30

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
Copper
55.195 µg/L 4.2%
of the EPA limit 1300 µg/L
worst single sample: 72.5 µg/L
28/28 SYR4 2013–2019
Lead
0.0014 mg/L 9.3%
of the EPA limit 0.0150 mg/L
 18/18 LCR 2023
Combined Radium (-226 And -228)
2.55 pCi/L 51%
of the EPA limit 5 pCi/L
worst single sample: 3.1 pCi/L
12/12 SYR4 2012–2017
Gross Alpha, Excl. Radon And U
10.565 pCi/L 70%
of the EPA limit 15 pCi/L
worst single sample: 10.7 pCi/L
10/10 SYR4 2012–2013
Bromoform
2.014 µg/L
No EPA limit set
worst single sample: 2.57 µg/L
9/15 SYR4 2013–2019
Barium
120.95 µg/L 6%
of the EPA limit 2000 µg/L
worst single sample: 122 µg/L
8/8 SYR4 2013–2019
Fluoride
423 µg/L 11%
of the EPA limit 4000 µg/L
worst single sample: 430 µg/L
8/8 SYR4 2013–2019
Dibromochloromethane
1.682 µg/L
No EPA limit set
worst single sample: 1.88 µg/L
7/15 SYR4 2013–2019
Lead
3.625 µg/L 24%
of the EPA limit 15 µg/L
worst single sample: 4.27 µg/L
7/28 SYR4 2013–2019
Nitrate-Nitrite
10 µg/L 0.1%
of the EPA limit 10000 µg/L
 6/40 SYR4 2012–2019
TTHM
8.215 µg/L 10%
of the EPA limit 80 µg/L
worst single sample: 8.65 µg/L
4/7 SYR4 2013–2019
Bromodichloromethane
1.627 µg/L
No EPA limit set
worst single sample: 1.73 µg/L
3/15 SYR4 2013–2019
Chloroform
3.735 µg/L
No EPA limit set
worst single sample: 4.01 µg/L
3/15 SYR4 2013–2019
Chromium
2.568 µg/L 2.6%
of the EPA limit 100 µg/L
worst single sample: 2.65 µg/L
3/8 SYR4 2013–2019
Arsenic
1.98 µg/L 20%
of the EPA limit 10 µg/L
 1/8 SYR4 2013–2019
Dichloroacetic Acid
9.99 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
16.2 µg/L 27%
of the EPA limit 60 µg/L
 1/7 SYR4 2013–2019
Trichloroacetic Acid
6.2 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
53 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CAHILL, BRANDON
Phone
417-276-5210

Frequently asked questions about Stockton

Is Stockton tap water safe to drink?

EPA monitoring detected 18 contaminants in Stockton'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 Stockton's water?

EPA monitoring detected Copper, Lead, Combined Radium (-226 And -228), Gross Alpha, Excl. Radon And U, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Stockton serve?

Stockton reports serving 1,892 people in Missouri, per its EPA record.

Has Stockton had any water quality violations?

The EPA has 55 violations on file for Stockton, of which 41 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.