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Tap water quality report

York Water Co

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
206,762
people served
2
health-based violations
Pennsylvania rankingsLead in PennsylvaniaPFAS in Pennsylvania
Water source
Surface water
Ownership
Private
Counties served
York

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.

2
health-based violations
30
violations on file
1
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2022-07-01 → 2022-07-31
MCL Health-based Resolved 2022-07-01 → 2022-07-31
RPT Monitoring Unaddressed 2025-07-11
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2024-07-01 → 2024-09-30
MR Monitoring Resolved 2022-10-01 → 2022-12-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MR Monitoring Resolved 2019-10-01 → 2019-10-31
MR Monitoring Resolved 2019-10-01 → 2019-10-31

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 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
100 µg/L 7.7%
of the EPA limit 1300 µg/L
worst single sample: 490 µg/L
404/436 SYR4 2013–2019
Lead
21 µg/L 140%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 300 µg/L
214/477 SYR4 2013–2019
Bromodichloromethane
7.8 µg/L
No EPA limit set
worst single sample: 9.3 µg/L
189/189 SYR4 2012–2019
Chloroform
35.96 µg/L
No EPA limit set
worst single sample: 57 µg/L
189/189 SYR4 2012–2019
TTHM
46.12 µg/L 58%
of the EPA limit 80 µg/L
worst single sample: 68 µg/L
189/189 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
33.4 µg/L 56%
of the EPA limit 60 µg/L
worst single sample: 59.9 µg/L
161/185 SYR4 2012–2019
Dibromochloromethane
2.1 µg/L
No EPA limit set
worst single sample: 2.44 µg/L
149/189 SYR4 2012–2019
Nitrate
4934 µg/L 49%
of the EPA limit 10000 µg/L
worst single sample: 5300 µg/L
64/64 SYR4 2012–2019
Trichloroacetic Acid
12.635 µg/L
No EPA limit set
worst single sample: 17.1 µg/L
40/40 SYR4 2018–2019
Dichloroacetic Acid
21.66 µg/L
No EPA limit set
worst single sample: 24.3 µg/L
39/40 SYR4 2018–2019
Lead
0.0030 mg/L 20%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Monochloroacetic Acid
3.445 µg/L
No EPA limit set
worst single sample: 3.5 µg/L
12/40 SYR4 2018–2019
Barium
21.985 µg/L 1.1%
of the EPA limit 2000 µg/L
worst single sample: 23 µg/L
8/8 SYR4 2012–2019
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
 7/40 SYR4 2018–2019
Monobromoacetic Acid
1.81 µg/L
No EPA limit set
worst single sample: 1.9 µg/L
4/40 SYR4 2018–2019
Atrazine
0.4160 µg/L 14%
of the EPA limit 3 µg/L
worst single sample: 0.4200 µg/L
2/8 SYR4 2014–2019
Chromium
38 µg/L 38%
of the EPA limit 100 µg/L
 1/9 SYR4 2012–2019
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
JT HAND
Phone
717-845-3601

Frequently asked questions about York Water Co

Is York Water Co tap water safe to drink?

EPA monitoring detected 17 contaminants in York Water Co'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 York Water Co's water?

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

How many people does York Water Co serve?

York Water Co reports serving 206,762 people in Pennsylvania, per its EPA record.

Has York Water Co had any water quality violations?

The EPA has 30 violations on file for York Water Co, of which 2 are health-based (a contaminant limit or required treatment was breached) and 1 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.